a spring stretches from an initial height of 5 cm to a final stretch of 10 cm. the spring constant is 800 n/m.How much work was done on the spring?
what is the final force on the spring when it is at its 10 cm stretch?
explain why it is not appropriate to use the equation w=f//d when considering springs.

Answers

Answer 1

Answer:

.

Explanation:

F = kx so k = 800/((10-5)/100) = 16000 N/m

W = 1/2 kx^2 = 1/2 * 16000 * .05^2 = 20 J.

(sorry if it's wrong)


Related Questions

n unit-vector notation, what is the torque about the origin on a particle located at coordinates (0, −4.0 m, 3.0 m) if that torque is due to (a) force F1 with components F1x = 2.0 N, F1y = F1z = 0, and (b) force F2 with components F2x = 0, F2y = 2.0 N, F2z = 4.0 N?

Answers

n unit vector notation, -22j is the torque about the origin on a particle located at coordinate (o, -4.0m, 3.0m)


Torque
is defined as the force that can cause an object to rotate along an axis is measured as torque. Estimate the angle between the vector connecting the force's application point and the pivot point and the direction of the applied force. You may calculate the torque by multiplying r by F and sin.

T=R (distance) x F (Force)

R=-4j+3k

F=2J

Hence, t=  R x F vector product

=(-4j+3k)x2j

=-4x2x(y x J)

=+3x2y(k x r)

=-8x(-k)+6j

=(6j+8k) nm

b) F^2=2J+4K

Hence, t=r x f^2

=(-4j+3k)x(2j+4k)

=0-16( J x k)+6(K x J)+0

=-16j-6j

=-22j  

To learn more about vector notation
https://brainly.com/question/28564974
#SPJ4        

When converting chemical potential energy to kinetic energy some of the energy is lost as heat.

Answers

Answer:

When converting chemical potential energy to kinetic energy some of the energy is lost as heat.

A swimmer swims the length of a 50-meter pool, swims back to their starting point, and finally swims back to the opposite side again.

What is their overall displacement?

What total distance did they swim?

SHOW YOUR WORK or explain your answer.

Answers

The distance that is covered is 150 m

The displacement is 50 m.

What is the displacement?

We have to know that the displacement has to do with the distance that is covered in a  specific direction. We have to take note of the direction that we have there as that is what does make the difference between the distance and the displacement.

The distance does not involve the direction. It can then be safe to say that displacement is a vector and that distance is a scalar. Once again let us recall that these are so because the distance does not take cognizance of the direction while the displacement would always take cognizance of the direction of the motion.

Then we have;

Distance = 50 m + 50 m + 50 m = 150 m

For displacement calculation;

Moving towards the opposite side and back = 50 m - 50 m = 0 m

Moving again to the opposite side;

Displacement = + 50 m

Note that the backward motion of the swimmer would be taken as negative.

Therefore total displacement = 50 m

Learn more about displacement:https://brainly.com/question/11934397

#SPJ1

A man attempts to move a truck by pushing it, but he can't move it. Describe the work done by the man.

Answers

If a man tried to move a truck by pushing it, but he is not able to move it, then the work done by the man will be equal to zero.

What is Work?

In physics, the word "work" involves measurement of energy transfer that takes place when an item is moved over a range by an externally applied, at least a portion of which is applied with in the direction of the displacement. The length of the path is multiplied by the element of a force acting all along the path to calculate work if the force is constant. The work W is theoretically equivalent towards the force f times the length d, or W = fd, to portray this concept.

As per the given question,

The man tries to move the truck, but he is not able to move. It means that the total displacement is zero, which means according to the formula of work done the work is also zero.

To know more about Work:

https://brainly.com/question/18094932

#SPJ1

A bicycle has a mass of 39.5 kg on earth. What would its weight be on the moon ( g Moon = 1.6 N/KG

Answers

So, if the object is on the Moon, its weight will be 63.2 N.

Introduction

Hi ! This time I will help you to discuss the weight of objects. Weight is not mass, because weight is affected by the acceleration of gravity. As for the mass of an object, its value will never change, whether in one place, another place, another planet, or even in outer space. The relationship between weight, mass, and gravitational acceleration can be formulated in the equation:

\( \boxed{\sf{\bold{w = m \times g}}} \)

With the following condition :

w = weight of the object (N)m = mass of the object (kg)g = acceleration of the gravity (m/s² or N/kg)

Problem Solving

We know that :

m = mass of the object = 39.5 kgg = acceleration of the gravity = 1.6 N/kg

What was asked :

w = weight of the object = ... N

Step by step :

\( \sf{w = m \times g} \)

\( \sf{w = 39.5 \times 1.6} \)

\( \boxed{\sf{w = 63.2 \: N}} \)

Conclusion

So, if the object is on the Moon, its weight will be 63.2 N.

See MoreWhich statements about surface gravity are true? https://brainly.com/question/26403335Match each action with the object that is primarily responsible for causing that action https://brainly.com/question/26403275

An object is dropped from an unknown height. If it falls for 12.0s, how far
does it fall? (g = -9.81 m/s²)
O-706 m/s²
O -706 m/s
O -706 m
O-706 s
Question 7
4.1 pts

Answers

Answer:

706 m

Explanation:

Since distance is measured in meters (Standard Issued Units) the answer would be 706 m and not any other value.

What does the top pressure gauge in (Figure 1) read? Express your answer using two significant figures.

What does the top pressure gauge in (Figure 1) read? Express your answer using two significant figures.

Answers

Digital manometers can be used to measure liquids, gases, and air, depending on the device. If the instruments have an internal memory, it works quite well.

What does the top pressure gauge indicate?

Pressure Gauge in Psig Pressure as a percentage of the surrounding atmospheric pressure. The gauge pressure for this kind of pressure includes the pressure from the weight of the atmosphere because it is zero-referenced against atmospheric pressure.

These gauges typically have a measurement range of 0… 1 mbar to 0… 600 mbar and an accuracy class of 0.1 to 2.5. Although pressure gauges typically require very minimal upkeep, problems can happen.

Therefore, This tool can be used to measure pressure in a variety of locations. Measurements of negative pressure, overpressure, and differential pressure are all possible.

Learn more about pressure gauge here:

https://brainly.com/question/29341536

#SPJ2

What is likely to occur after a lava flow has destroyed all life in a natural community?



A:growth of opportunist species



B:climax community



C:primary succession



D:secondary succession

Answers

Answer:

C: primary succession

Explanation:

I took the test :)

Identify the different types of costs that must be identified and quantified to do aggregate planning. (Check all that apply.) -Inventory holding cost
- Subcontracting cost
- Regular production cost
- Hiring cost
- Backorder/lost sales cost
- Overtime cost
- Firing/layoff cost

Answers

The four relevant costs related to the aggregate production planning involves:

inventory holding costs,Regular production costOvertime costBackorder/lost sales cost.

What is aggregate planning?

Aggregate planning is a method for creating a comprehensive manufacturing plan that ensures continuous production at a facility. Aggregate production planning is typically applied over a three to eighteen-month period. It is the activity of matching output supply with demand over a medium time span using information derived from inventory levels.

This ultimately implies that aggregate planning is a strategic technique used by organizations to make an aggregate plan for their manufacturing (production) process ahead of time, in order to have an idea of the level of goods to be produced and what resources are required so that the total cost of production is kept to a bare minimum.

Production and inventory costs are the two major cost categories required as inputs for aggregate planning. Production costs include regular and overtime labor costs, costs of subcontracting production, costs of changing capacity by hiring or laying off workers, and costs of increasing or decreasing machine capacity.

Learn more about planning on:

https://brainly.com/question/18803972

#SPJ1

A frictionless plane is 10.0 m long and inclined at 36.0°. A sled starts at the bottom with an initial speed of 6.00 m/s up the incline. When the sled reaches the point at which it momentarily stops, a second sled is released from the top of the incline with an initial speed Vi. Both sleds reach the bottom of the incline at the same moment.
(a) Determine the distance that the first sled traveled up the incline. m
(b) Determine the initial speed of the second sled. m/s

Use the equation for the position of the second sled as a function of time to find the speed that makes it reach the bottom of the slope in the same time that the first sled takes to slide back down.

Answers

If a frictionless plane is 10.0 m long and inclined at 36.0°.

The sled traveled  8.17 m up the incline.The initial speed of the second sled is about  5.68 m/s

How to find the initial speed?

We can use conservation of energy to find the distance that the first sled travels up the incline. The potential energy of the sled at the bottom of the incline is zero, and its kinetic energy is:

KE = (1/2)mv^2

where m is the mass of the sled and v is its speed. At the point where the sled stops, all of its kinetic energy has been converted into potential energy, so we can write:

mgh = (1/2)mv^2

where h is the height that the sled has traveled up the incline. Solving for h, we get:

h = (v^2)/(2g)

where g is the acceleration due to gravity. Using the given values, we have:

h = (6.00 m/s)^2 / (2 * 9.81 m/s^2) = 1.83 m

So the first sled travels a distance of 10.0 m - 1.83 m = 8.17 m up the incline.

b. To find the initial speed of the second sled, we can use conservation of energy again. At the top of the incline, the sled has potential energy:

PE = mgh

where h is the height of the incline. As the sled slides down the incline, its potential energy is converted into kinetic energy:

KE = (1/2)mv^2

where v is the speed of the sled at the bottom of the incline. We can equate these two expressions and solve for v:

mgh = (1/2)mv^2

v = sqrt(2gh)

Using the given values, we have:

v = sqrt(2 * 9.81 m/s^2 * 10.0 m * sin(36.0°)) = 12.2 m/s

So the second sled must be released from the top of the incline with an initial speed of 12.2 m/s.

The position of the sled as a function of time is given by:

y = -0.5gt^2 + Vi*t + h

where y is the vertical position of the sled, t is the time, Vi is the initial speed of the sled, and h is the height of the incline. At the bottom of the incline, y = 0, so we can solve for the time it takes for the second sled to reach the bottom:

0 = -0.5gt^2 + Vi*t + h

t = (Vi ± sqrt(Vi^2 - 2gh)) / g

Since we want both sleds to reach the bottom at the same time, we set the time for the first sled to slide down the incline equal to this expression for t and solve for Vi:

t = sqrt(2h/g) = sqrt(2 * 1.83 m / 9.81 m/s^2) = 0.619 s

0 = -0.5gt^2 + Vi*t + h

Vi = (h - 0.5gt^2) / t

Vi = (1.83 m - 0.5 * 9.81 m/s^2 * (0.619 s)^2) / 0.619 s

Vi = 5.68 m/s

So the initial speed of the second sled is about  5.68 m/s

Learn more about initial speed here:https://brainly.com/question/24493758

#SPJ1

Calculate the quantity of heat energy which must be transferred to 2.25 kg of brass to raise its temperature from 20°C to 240°C if the specific heat of brass is 394 J/kgK.

Answers

The quantity of heat energy that must be transferred to 2.25 kg of brass to raise its temperature from 20 °C to 240 °C is 195030 J

How do i determine the quantity of heat energy?

First, we shall list out the given parameters from the question. This is shown below:

Mass of brass (M) = 2.25 Kg Initial temperature of brass (T₁) = 20 °CFinal temperature of brass (T₂) = 240 °CChange in temperature of brass (ΔT) = 240 - 20 = 220 °CSpecific heat capacity of brass (C) = 394 J/kgKQuantity of heat energy (Q) =?

The quantity of heat energy that must be transferred can be obtained as follow:

Q = MCΔT

= 2.25 × 394 × 220

= 195030 J

Thus, we can conclude quantity of heat energy that must be transferred is 195030 J

Learn more about heat:

https://brainly.com/question/16398667

#SPJ1

In our solar system, which celestial object is known as the dwarf planet?

Answers

Answer:

unfournatletly

Explanation:

i have no clue sorry to waste ur time ill rather not say a answer that will be incorrect.

Answer:

Pluto

Explanation:

Pluto was part of our solar system till 2006In 2006 international scientific committee removed it from planets listIt's known as dwarf planet now

6. What is the mass of a boy who is standing on top of a 1.5 meter high
wall and has 735 J of gravitational potential energy?

Answers

Answer:

m = 50 [kg]

Explanation:

The potential energy can be calculated by means of the following equation.

\(E_{p}=m*g*h\)

where:

Ep = potential energy = 735 [J]

m = mass [kg]

g = gravity acceleration = 9.81 [m/s²]

h = elevation = 1.5 [m]

Now replacing:

\(735=m*9.81*1.5\\m = 50 [kg]\)

A solid block is attached to a spring scale. When the block is suspended in air, the scale reads 20.1 N; when it is completely immersed in water, the scale reads 15.3 N.
A) What is the volume of the block?
B) What is the density of the block?

Answers

Answer:

A) \(V = 4.92 \cdot 10^{-4} m^{3} = 492 cm^{3}\)

B) \( d = 4181.49 kg/m^{3} = 4.18 g/cm^{3} \)

Explanation:

A) Using the Archimedes' force we can find the weight of water displaced:

\( W_{d} = W_{a} - W_{w} \)

Where:

\(W_{a}\): is the weight of the block in the air = 20.1 N

\(W_{w}\): is the weight of the block in the water = 15.3 N

\( W_{d} = W_{a} - W_{w} = 20.1 N - 15.3 N = 4.8 N \)

Now, the mass of the water displaced is:

\( m = \frac{W_{d}}{g} = \frac{4.8 N}{9.81 m/s^{2}} = 0.49 kg \)

The volume of the block can be found using the mass of water displaced and the density of the water:

\(V = \frac{m}{d} = \frac{0.49 kg}{997 kg/m^{3}} = 4.92 \cdot 10^{-4} m^{3} = 492 cm^{3}\)

B) The density of the block can be found as follows:

\( d = \frac{W_{a}}{g*V} = \frac{20.1 N}{9.81 m/s^{2}*4.92 \cdot 10^{-4} m^{3}} = 4181.49 kg/m^{3} = 4.18 g/cm^{3} \)

I hope it helps you!            

A runner starts from rest and achieves a maximum speed of 8.85 m/s.
If her acceleration is 9.67 m/s2, how long does it take her to reach that speed?

Answers

Answer:

The appropriate answer is "0.9152 seconds".

Explanation:

The given values are:

Maximum speed,

v = 8.85 m/s

Acceleration,

u = 9.67 m/s²

Now,

⇒ \(v = u+at\)

By putting the values, we get

⇒ \(8.85=0+9.67t\)

⇒      \(t=\frac{8.85}{9.67}\)

⇒         \(=0.9152 \ second\)    

Which best describes friction?

Answers

Answer:

It is the force that opposes motion between two surfaces touching each other. ( OR ) The force between two surfaces that are sliding or trying to slide across each other.

Explanation:

Answer:

a constant force that acts on objects that rub together

Explanation:

a constant force that acts on objects that rub together

Drag each label to the correct location on the image.
Match the government activities to the different fiscal policies.
government is spending
less than what it earns
budget indicates a surplus
budget indicates a deficit
government is spending
more than what it earns
Contractionary Fiscal Policy
government is spending more
on infrastructure development
Expansionary Fiscal Policy

Drag each label to the correct location on the image.Match the government activities to the different

Answers

Matching the government activities to the different fiscal policies.

Contractionary Fiscal Policy:

budget indicates a surplus

government is spending less than what it earns

Expansionary Fiscal Policy:

government is spending more on infrastructure development

budget indicates a deficit

government is spending more than what it earns


Matching the government activities to the different fiscal policies?

When the government is spending less than what it earns, it has a budget surplus. This indicates that the government is collecting more revenue than it is spending. This is an example of a contractionary fiscal policy because it reduces the amount of money circulating in the economy, which can help control inflation.

When the government is spending more than what it earns, it has a budget deficit. This indicates that the government is spending more money than it is collecting in revenue. This is an example of an expansionary fiscal policy because it injects more money into the economy, which can stimulate economic growth.

When the government is spending more on infrastructure development, it is an example of an expansionary fiscal policy because it increases government spending and stimulates economic growth.

Learn more about fiscal policy here:https://brainly.com/question/6583917

#SPJ1

A beaver runs at a speed of 2.0 m/s with 45 J of kinetic energy. What is the beaver’s mass?

Answers

A beaver runs at a speed of 2.0 m/s with 45 J of kinetic energy, then the mass is approximately 1.74 kg, and this can be calculated by using the  kinetic energy (KE) of an object that is KE = (1/2) ×m × \(v^2\).

KE = (1/2) ×m × \(v^2\).

where m= mass of the object, v=its velocity.

The beaver runs at a speed of 2.0 m/s with 45 J of kinetic energy. Substituting these values into the above equation

45 J = (1/2) ×m × \((2.0 m/s)^2\)

Simplifying this equation:

45 J = (1/2) × m × 4.0\(m^2/s^2\)

45 J = 2 m × 2 \(m^2/s^2\)

45 J = 4 \(m^3/s^2\)

\(m^3\) = 45 J / 4 \(s^2\)

\(m^3\) = 11.25 kg×\(m^2/s^2\)

Taking the cube root of both sides to solve for mass,

m = (11.25 kg×\(m^2/s^2)^(^1^/^3^)\)

m = 1.74 kg (rounded to two decimal places)

Learn more about the calculation of mass here.

https://brainly.com/question/20480898

#SPJ1

Please help, I keep trying a bunch of things but keep getting them wrong. I don't know where I am going wrong here.
1. Boyle's Law states the volume and pressure of a gas are inversely proportional.
Name the three units of the constant of proportionality between pressure and volume in alphabetical order. (**I have the first two)
2. The ideal gas law can be written as (PV/nT=R). Name the units for R.

Answers

The units of the constant of proportionality between pressure and volume in alphabetical order are

1. Celsius (°C)

2. Fahrenheit (°F)

3. Kelvin (K)

The units for R, that is, the ideal gas constant are

1. J K⁻¹ mol⁻¹

2. L atm K⁻¹ mol⁻¹

We will start by completing the Boyle's Law stated

Boyle's Law states the volume and pressure of a gas are inversely proportional, provided that the temperature remains constant.

This means temperature is the constant of proportionality.

Now, we will name the three units of the constant of proportionality, that is, temperature. The units are

1. Degree Celsius (°C)

2. Degree Fahrenheit (°F)

3. Kelvin (K)

2. In the ideal gas equation (PV/nT=R), R represents the ideal gas constant.

The units for R, that is, the ideal gas constant are

1. J K⁻¹ mol⁻¹

2. L atm K⁻¹ mol⁻¹

Hence,

The units of the constant of proportionality between pressure and volume in alphabetical order are

1. Celsius (°C)

2. Fahrenheit (°F)

3. Kelvin (K)

The units for R, that is, the ideal gas constant are

1. J K⁻¹ mol⁻¹

2. L atm K⁻¹ mol⁻¹

Learn more here: https://brainly.com/question/16046515

How large is the tension in a rope that is being used to accelerate a 100 kg box upward at 2m/s2?

Answers

m=100kgAcceleration=2m/s^2

\(\\ \sf\Rrightarrow T=F\)

\(\\ \sf\Rrightarrow T=ma\)

\(\\ \sf\Rrightarrow T=100(2)\)

\(\\ \sf\Rrightarrow T=200N\)

What is the world ? B

Answers

Answer:

World B. Free

American professional basketball player

World B. Free is a retired American professional basketball player who played in the National Basketball Association from 1975 to 1988. Free was known as the "Prince of Mid-Air", "Brownsville Bomber", and most often as "All-World".

Explanation:

sana makatulong ^^ (hope it helps)

The anomalous expansion characteristics of liquid water are crucial to many biological systems. Rather than an approximately constant value for the coefficient of volume expansion, the value for water changes drastically, as illustrated in the figure.

Below what temperature T
does water shrink when heated?

If the temperature of water at 30 ∘C
is raised by 1 ∘C
, the water will expand. At approximately what initial temperature T
will water expand by twice as much when raised by 1 ∘C
?

Answers

(A) The water will shrink when is heated above 4°C. (B).water at an initial temperature of 33.3°C will be expand by twice as much when it is raised by 1°C compared to water at 30°C.

The anomalous expansion of water refers to the fact that its volume increases upon cooling from 4°C to 0°C, and then contracts upon further cooling to 0°C, and continues to contract upon further cooling. Similarly, when water is heated, its volume first contracts until it reaches 4°C, and then expands upon further heating.

To determine at what temperature water shrinks when heated, we need to find the point at which the coefficient of volume expansion, β, becomes negative. The coefficient of volume expansion is defined as the fractional change in volume per degree Celsius change in temperature, i.e.,

β = (1/V)  (dV/dT)

where V is the volume of the water and dV/dT is the rate of change of volume with respect to temperature.

At temperatures below 4°C, the coefficient of volume expansion is positive, indicating that water expands upon heating. However, at temperatures above 4°C, the coefficient of volume expansion becomes negative, indicating that water contracts upon heating.

Therefore, water will shrink when heated above 4°C.

To determine the initial temperature at which water will expand by twice as much when raised by 1°C, we can use the formula for the coefficient of volume expansion:

β = (1/V)  (dV/dT)

We want to find the initial temperature T such that

(dV/dT)T = 2 (dV/dT)30

where (dV/dT)T is the rate of change of volume with respect to temperature at temperature T, and (dV/dT)30 is the rate of change of volume with respect to temperature at 30°C.

Using the coefficient of volume expansion for water, we have

β = 3α

where α is the coefficient of linear expansion, which is approximately constant for small temperature changes. Therefore, we can write

(dV/dT) = V × 3α

Substituting this into the equation above and simplifying, we get

T = 30 + 10/3 = 33.3°C

Therefore, water at an initial temperature of 33.3°C will expand by twice as much when raised by 1°C compared to water at 30°C.

To know more about water

https://brainly.com/question/29668257

#SPJ1

The anomalous expansion characteristics of liquid water are crucial to many biological systems. Rather

Sadly, the car crashed into a tree at a speed of 5 ms*'. It took 1.2 s for the car to come to a full stop. Calculate the force exerted on the tree. the car weighs 1600kg

Answers

Sadly, the car crashed into a tree at a speed of 5 ms*'. It took 1.2 s for the car to come to a full stop, then the force exerted on the tree would be  6666.67 N.

What are the three equations of motion?

There are three equations of motion given by  Newton,

v = u + at

S = ut + 1/2 × a × t²

v² - u² = 2 × a × s

By using the first equation of the motion,

v = u + at

0 = 5 + 1.2a

a = 5 / 1.2

a = 4.167 m / s²

The force exerted on the tree = 1600 × 4.167

                                                  = 6666.67 N

Thus, the force exerted on the tree would be 6666.67 N.

Learn more about equations of motion from here,

brainly.com/question/5955789

#SPJ1

Gold forms a solid solution with silver. Since the densities of pure gold and silver are 19.32 g/cm³ and 10.49 g/cm³, respectively, calculate the number of gold atoms per cubic centimeter for a silver-gold alloy containing 10% Au and 90% Ag by weight.

Answers

There are 3.37 × \(10^{22}\) gold atoms per cubic centimeter in the silver-gold alloy.

The density of a binary alloy can be calculated using the following equation:

ρ = w1ρ1 + w2ρ2

where,

ρ = density of the alloy

w1 and w2 = weight fractions of the two components (in this case, gold and silver)

ρ1 and ρ2 = densities of the pure components.

We are given that the alloy contains 10% gold and 90% silver by weight, so we can calculate the weight fractions as:

\(w_{Au}\) = 0.10

\(w_{Ag}\) = 0.90

We are also given the densities of pure gold and silver as:

ρ_Au = 19.32 g/\(cm^{3}\)

ρ_Ag = 10.49 g/\(cm^{3}\)

Now we can substitute these values into the density equation to find the density of the alloy:

ρ = \(w_{Au}\)ρ_Au +\(w_{Ag}\)ρ_Ag

ρ = (0.10)(19.32 g/\(cm^{3}\)) + (0.90)(10.49 g/\(cm^{3}\))

ρ = 11.08 g/\(cm^{3}\)

Next, we need to calculate the number of gold atoms per cubic centimeter in the alloy.

To do this, we can use Avogadro's number and the atomic weights of gold and silver:

\(N_A\) = 6.022 × \(10^{23}\) atoms/mol

Aum = 196.97 g/mol

Agm = 107.87 g/mol

The number of gold atoms:

\(n_{Au}\) = (\(w_{Au}\)ρ/ Aum) × \(N_{A}\)

Substituting the values, we get:

\(n_{Au}\) = (0.10 × 11.08 g/\(cm^{3}\)/ 196.97 g/mol) × 6.022 × \(10^{23}\) atoms/mol

\(n_{Au}\) ≈ 3.37 × \(10^{22}\) atoms/\(cm^{3}\)

Therefore, there are approximately 3.37 × \(10^{22}\) gold atoms per cubic centimeter in the silver-gold alloy.

know more about weight fractions here:

https://brainly.com/question/29078616

#SPJ11

An electric motor is used to hoist building supplies from the ground to the roof of a building. How high can it lift a 131 kg bundle of shingles in that time?

Answers

The electric motor will lift the 131 kg bundle of shingles at a height of 14 m.

What is gravitational potential energy?

Gravitational potential energy is the energy exhibited by an object because of a change in its position in the presence gravitational field.

The gravitational potential energy of an object at height h from the surface of the earth is given by:

\(U = mgh,\)                  where m is the mass of the object.

Given, the power of the electric motor, P = 1.5 KW, and time, t - 12 s

Power = Work/ time

Work = Power × time

Work = 1500 ×12 = 18000 J

Given, the mass of the object, m= 131 Kg

The gravitational potential energy, U = 18000J

The height of the bundle of shingles can be determined as:

18000 = 131 ×9.8 ×H

H = 14 m

Learn more about gravitational potential energy, here:

brainly.com/question/19768887

#SPJ1

Your question was incomplete most probably complete question was,

An electric motor is used to hoist building supplies from the ground to the roof of a building. How much work can the motor do in 12 seconds if its power output is 1.5 kW. How high can it lift a 131 kg bundle of shingles in that time?

what is the statement of objectives in newton's second law using word to investigate, to plot,to compare, to measure​

Answers

by changing the force and observing the impact on an object's acceleration, one can examine the link between force and acceleration.

What aims does Newton's second law of motion have?

In conclusion, Newton's second law gives an explanation for how objects whose forces are out of balance behave. According to the law, when there are imbalanced forces acting on an item, the object will accelerate with an acceleration that is inversely proportional to the mass and directly proportional to the net force.

What is Newton's law supposed to achieve?

The student should be able to relate the magnitudes of the various forces acting on an object to its state of motion, particularly the direction of acceleration. The pupil ought to be able to connect the net force.

To know more about acceleration visit:

https://brainly.com/question/12550364

#SPJ1

An elevator accelerates upward at 1.2 m/s
2
.
The acceleration of gravity is 9.8 m/s
2
.
What is the upward force exerted by the
floor of the elevator on a(n) 92 kg passenger?
Answer in units of N

Answers

Answer:

1012 N

Explanation:

There are two forces acting on the passenger.

Normal force N pushing up and weight force mg pulling down.

Apply Newton's Second Law:

∑F = ma

N − mg = ma

N − (92 kg) (9.8 m/s²) = (92 kg) (1.2 m/s²)

N = 1012 N

1. The resistance of an electric device is 40,000 microhms. Convert that measurement to ohms

2. When an electric soldering iron is used in a 110 V circuit, the current flowing through the iron is
2 A. What is the resistance of the iron?
3. A current of 0.2 A flows through an electric bell having a resistance of 65 ohms. What must be
the applied voltage in the circuit?

Answers

Answer:

(1) 0.04 ohms (2) 55 ohms (3) 13 volt

Explanation:

(1) The resistance of an electric device is 40,000 microhms.

We need to convert it into ohms.

\(1\ \mu \Omega =10^{-6}\ \Omega\)

To covert 40,000 microhms to ohms, multiply 40,000 and 10⁻⁶ as follows :

\(40000 \ \mu \Omega =40000 \times 10^{-6}\ \Omega\\\\=0.04\ \Omega\)

(2) Voltage used, V = 110 V

Current, I = 2 A

We need to find the resistance of the iron. Using Ohms law to find it as follows :

V = IR, where R is resistance

\(R=\dfrac{V}{I}\\\\R=\dfrac{110}{2}\\\\R=55\ \Omega\)

(3) Current, I = 0.2 A

Resistance, R = 65 ohms

We need to find the applied voltage in the circuit. Using Ohms law to find it as follows :

V=IR

V = 0.2 × 65

V = 13 volt

Answer:

1. 0.04 Ohms

2. 55 Ohms

3. 13 Volts

Explanation:

Penn Foster

A car accelerates from rest at a rate of 8.1 m/s2. How much time does it take the car to travel a distance of 65 meters?​

Answers

Answer:

ोोञककतकषगकषषमषघ

Explanation:

zzjjjfkgkzgkggkkkammmmmmatAllzy##pglCsg

A 2.5kg rock is thrown off the top of a 18m tall building with a speed of 14m/s. How fast is it going the instant it hits the ground?

Answers

The question requires us to calculate the velocity of a rock dropped off the top of a building using given data. The rock is thrown off the top of an 18m tall building with a speed of 14m/s and weighs 2.5kg. We must determine how fast the rock is traveling the instant it hits the ground.

To solve this problem, we must first determine the velocity of the rock just before it hits the ground.To do this, we can use the principle of conservation of energy, which states that the total amount of energy in a closed system remains constant. We can calculate the potential energy of the rock when it is at the top of the building and then use that value to determine its kinetic energy when it hits the ground. This can be expressed mathematically as:Potential energy = mg hwhere m is the mass of the rock, g is the acceleration due to gravity, and h is the height of the building.Using the given values, we can calculate the potential energy of the rock when it is at the top of the building as:Potential energy = (2.5kg)(9.8m/s2)(18m)Potential energy = 441JTo determine the velocity of the rock just before it hits the ground, we can use the principle of conservation of energy to equate the potential energy of the rock at the top of the building to its kinetic energy just before it hits the ground. This can be expressed mathematically as:Potential energy = kinetic energy441J = (1/2)(2.5kg)v2where v is the velocity of the rock just before it hits the ground.Simplifying the equation, we get:v2 = (2)(441J) / (2.5kg)v2 = 352v = √(352)v = 18.7m/sTherefore, the rock is going 18.7m/s the instant it hits the ground.

For such more question on velocity

https://brainly.com/question/80295

#SPJ8

Other Questions
The cube of a number is 100 times as large as the number itself. What is the number? pls solve me this functions question How did you feel John after you left the hospital?What part(s) of this sentence need a comma? Law is a practical discipline; theory has no place in law. With specific references to the Law of Contract, discuss. 700 words limit The APA referencing style Out of the following events, which one occurred first in the history of the universe?(1 Point) Please I need help, is basic english. the answers go in the spaces where the numbers are. (a) Calculate the perpetual equivalent annual worth in future dollars for years 1 through oo for income of $50,000 now and $5000 per year thereafter. Assume the market interest rate is 8% per year and inflation averages 4% per year. All amounts are quoted as future dollars. (b) If the amounts had been quoted in CV dollars, what is the annual worth in future dollars? What is the volume of the prism below? A. 150 cubic units B. 300 cubic units C. 55 cubic units D. 1,500 cubic units Question 13 of 20Which part of the product life cycle typically includes consumer tests and ahigh advertising budget?A. Introduction stageB. Decline stageC. Growth stageD. Maturity stage which covenant is a promise that the grantor has the legal capacity to convey the title and has the title to convey? A 10.5 cm long solenoid contains 881 turns and carries a current of 4.99 A. What is the strength B of the magnetic field at the center of this solenoid?B= ___T I'm a denf it so I can show because I can't send the full pic which of the following is true about the cycle of intimate partner violence? group of answer choices women who have experienced the cycle more than once tend to develop battered woman syndrome. the cycle involves a tension-building phase during which the worst battering occurs. during the acute attack, the abuser typically harms him- or herself as well. in the remorse/reconciliation phase, the batterer tries to teach the partner a lesson by inflicting severe pain. what plus -57 Equals -6 Somebody please help!! based on the case study (chapter 5; page 108-109) , please, summarize options betty and clayton have in their situation (matter of fact, a lot of aging adults in our country). what laws/legislations would be supporting betty and clayton decision? Many different individuals have used cars for sale. Some of these cars are good, some of these cars are bad (often called a "lemon"). However, the average person who buys cars is not knowledgeable enough to tell which used cars is good and which one is a lemon. As such, buyers of used cars will tend to underpay for used cars to protect themselves against the odds of getting a lemon. Cars sellers with good cars tend to be driven away from the market because of this tendency of buyers to slightly underpay for a car. This is an example of (Select all that applies): Asymmetric Information Moral Hazard Adverse Selection None of the above Can you match the major organs of digestion with the correct purpose? Drag the part of the human digestive system to the correct description.Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.This digestive organ stores bile which is produced by the liver.This organ has many functions, including producing bile and synthesizing carbohydrates and fats.This is a muscular tube through which food passes, aided by peristaltic contractions, from the pharynx to the stomach.This is an organ in the digestive system which transports waste out of the body and absorbs water from the waste before it leaves the body.This is an organ of digestion. It continues the process of mechanical digestion; it secretes gastric juices that continue the process of chemical digestion started in the mouth.This is the entry point for food and the beginning of the digestive system. Mechanical and some chemical digestion begins here.This is the narrow, winding organ where digestion is completed and nutrients are absorbed by the blood.Found in and around your neck, they produce the saliva used to moisten your mouth, initiate digestion, and help protect your teeth from decay. For P = {1, 6, 10, 14}, Q = {1, 5, 11), and R = {3, 5, 10, 11), find P U (Q U R).The answer is { }(Use a comma to separate answers as needed.) The graph shows the price of green tea compared to the amount supplied by producers.A graph titled Supply of Green Tea has quantity supplied on the x-axis, from 0 to 10, and price in dollars on the y-axis, from 0 to 10. A line with positive slope is shown. The line contains 2 points. Point (S 1, P 1) is at (3, 4) and point (S 2, P 2) is at (5, 7).What does this graph suggest about green tea? Choose two answers.Green tea is elastic in terms of supply.Green tea is inelastic in terms of supply.Green tea is neither elastic nor inelastic.The supply of green tea changes sharply with the price.The supply of green tea does not change sharply with the price.