You walk 60 m forward and then 40 m back in 20 s. What is your velocity?
a. 1 m/s
b. 2 m/s
c. 3 m/s
d. 5 m/s

The speed of the second bowling ball after collision is 1.55 m/s

Speed can be defined as the ratio of distance to time of a body.

To calculate the speed of the second bowling ball after collision, we use the formula below

Formula:

v = mu/m'................ Equation 1

Where:

From the question,

Given:

Substitute these values into equation 1

Hence, the second bowling ball is 1.55 m/s fast.

Learn more about speed here: https://brainly.com/question/17146782

#SPJ1

okay, so what i have learned from my experiences with doing school on e.d.g.e.n.u.i.t.y (they won't let me say the website name on here lol) is that after you write an extended response, they show you a sample response as well as these checkboxes which show things they wanted you to have included in your answer. ideally they want you to select all of them, meaning that all of those elements were included in your answer. it's not a matter or right or wrong; none of those checkboxes contain a wrong answer. you just select the ones that apply to your answer, and you won't get penalized if you don't select all of the checkboxes. you don't even have to select any of them. there's been times where my answer has been not at all what it should've been and i just click done without checking any of those boxes because i did not include any of those elements in my response. as long as the box that you wrote your answer in is outlined in green (which yours is, and that means that the computer likes your answer), you will be fine.

i hope this makes sense! it's sort of hard to explain. if you have any questions, just comment and i'll try my best to explain better lol. have a great rest of your day! <3

Answer:

A resistor of 160 ohms should be used to replace the current resistor

Explanation:

Applying,

Ohm's Law

V = IR................... Equation 1

Where V = Voltage of the battery, I = current, R = Resistance

From the question,

Given: I = 0.2 A, R = 120 ohms.

Substitute these values into equation 1

V = 0.2×120

V = 24 V

IF a current of 0.15 A is required,

make R the subject of equation 1

R = V/I............... Equation 2

Given: V = 24 V, I = 0.15 A

Substitute these values into equation 2

R = 24/0.15

R = 160 ohms.

Hence a resistor of 160 ohms should be used to replace the current resistor

The key question you should be inspired to ask yourself based on what you've learned in your astrobiology course is "What can I do to help scientists learn whether there is extraterrestrial life?"

This question reflects the importance of actively engaging in the field of astrobiology and supporting scientific efforts to explore the possibility of extraterrestrial life. It encourages individuals to consider their role in contributing to scientific research, whether it's through participation, advocacy, or supporting initiatives that aim to expand our understanding of life beyond Earth.

While the other questions mentioned are interesting and relevant to astrobiology and space exploration, the specific emphasis of the textbook author is on the question related to actively assisting scientists in their pursuit of discovering extraterrestrial life.

To learn more about astrobiology click here

https://brainly.com/question/28324034

#SPJ11

Answer:

yes it does exert a force, it pushes it up

Explanation:

this is called normal force

if it didn't exert a force the book would keep going down

according to newton every force has an equal amd opposite reaction

so the book exerts a force on the table and vice versa

hope this helped

Explanation:

According to newton's 3rd law of motion, the action and reaction force act in two different objects. For every action, there is an equal and opposite reaction.

Let F₁₂ is the force that object 1 experienced on object 2 and F₂₁ is the force that object 2 will experience on object 2. So,

F₁₂ = -F₂₁

So, an action-reaction pair of forces have equal magnitudes in the opposite direction.

The clay must be 300 m/s fast in other to stop the car.

For the car to stop, The momentum of the car must be equal to the momentum of the clay.

Formula:

Where:

Make v the subject of the equation.

From the question,

Given:

Substitute these values into equation 2

Hence, The clay must be 300 m/s fast in other to stop the car.

Learn more about momentum here: https://brainly.com/question/7973509

The velocity of canoe will be 27 m/s.

According to the rule of conservation of momentum, absent an external force, the combined momentum of two bodies operating upon one another in an isolated system kept static. As a result, momentum cannot be gained or lost.

Given, mass of the woman, m = 54 kg

mass of canoe, M = 48 kg

velocity of woman, v = 2 m/s

The principle of momentum conservation results in,

pi = pf

 0 = mv - Mu

mv = Mu

 u = mv/M

 u = 54×2/48

 u = 27 m/s

The velocity of canoe will be 27 m/s.

To know more about conservation of momentum visit

brainly.com/question/24989124

#SPJ4

By being wary of these factors and following the recommended guidelines, you can ensure the safe and effective use of hemoconcentrators in medical procedures.

When using hemoconcentrators, it's essential to be cautious and consider a few factors to ensure their safe and effective use. Some things to be wary of with hemoconcentrators include:
1. Compatibility: Make sure the hemoconcentrator is compatible with your specific application and equipment to avoid any malfunctions or complications during the procedure.
2. Clotting risks: Hemoconcentrators can sometimes lead to increased blood clotting risks. Ensure appropriate anticoagulation measures are in place during the procedure to minimize this risk.
3. Flow rate: Be mindful of the blood flow rate through the hemoconcentrator. Exceeding the recommended flow rate could lead to hemolysis or other complications.
4. Sterility: Maintain a sterile environment and follow proper handling procedures to prevent contamination, which could potentially lead to infection.
5. Monitoring: Closely monitor the patient's vital signs, blood pressure, and fluid balance during the procedure to promptly identify and address any adverse reactions or complications.

To learn more about hemolysis click here https://brainly.com/question/29855185

#SPJ11

Answer:

Scientific notation of 0.01 is 1×10^-2

Explanation:

Answer:

you have to match the letters in the picture to the list of energy types

The tension in the string supporting the rod and the attached weights is 7.11 N.

The tension in the string supporting the rod and the attached weights is the sum of the weights supported by the strings.

T = (m1 + m2)g

where;

0.4lb + 1.2lb = 1.6lb = 0.725 kg

T = 0.725 x 9.8

T = 7.11 N

Learn more about tension here: https://brainly.com/question/918617

#SPJ1

To determine the angle below which the light will be totally reflected, the refractive index of the water and the medium surrounding the water must be known, as well as the angle at which the light enters the water.

The critical angle of total internal reflection can be used to determine the angle below which the light will be totally reflected.

The exact angle will depend on the refractive index of the water and the medium surrounding the water, as well as the angle at which the light enters the water.

The critical angle is defined as the angle of incidence at which the refracted angle becomes 90 degrees, meaning that the light is no longer refracted and is instead totally reflected.

This angle can be calculated using Snell's law, which relates the angle of incidence and the refractive indices of the two media.

Visit here to learn more about Snell's law:

brainly.com/question/28747393

#SPJ11

When synthesizing methyl-p-nitrobenzoate and methyl-o-nitrobenzoate, destabilized cationic intermediates can form as minor products.

These intermediates are formed when the reaction conditions favor the formation of a carbocation intermediate rather than the intended product. Carbocation intermediates are highly reactive and unstable, which can lead to the formation of unexpected products. In the case of methyl-p-nitrobenzoate and methyl-o-nitrobenzoate synthesis, destabilized cationic intermediates can lead to the formation of byproducts or isomers that are different from the desired product. To minimize the formation of destabilized cationic intermediates, reaction conditions must be carefully controlled to favor the formation of the desired product over any competing reactions.

More on cationic intermediates: https://brainly.com/question/31156068

#SPJ11

When the maximal force and Full Width Half Maximum (FWHM) of the signal are combined, impulse would be roughly: if Fmax is 1000 N, and t is 0.1 s.

the result is in newton-seconds (Ns) or kilogrammes per second (kg/s), and is used to approximate the impulse.

I am unable to give a precise response without access to Figure 5.4. However, depending on the data given, the impulse can be roughly described as:

Fmax x t Impulse

where t is the Full Width Half Maximum (FWHM) of the signal and Fmax is the maximum force.

You must convert the force units to newtons and the time units to seconds before multiplying the two values to obtain the impulse in kilogrammes per second (kgm/s). The outcome will be expressed in newton-seconds (Ns) or kgm/s.

For instance, the impulse would be roughly: if Fmax is 1000 N, and t is 0.1 s.

1000 N x 0.1 s of an impulse equals 100 Ns or 100 kgm/s (to 1 decimal place).

Learn more about maximal force here:

https://brainly.com/question/11826042

#SPJ4

The exact same.  gravity has no effect on mass.

Answer:

Explanation:

At x = 0, there are no dislocated impulses, while at x = 3, there are 13,200 dislocated impulses.

The problem states that the number of dislocated electric impulses per cubic inch in a transformer increases when lightning strikes by D = 1100(4)×,

where × represents the time in milliseconds of the lightning strike.

We need to find the number of dislocated impulses at x = 0 and x = 3.

To find the number of dislocated impulses at x = 0, substitute x = 0 into the equation D = 1100(4)×:

D(0) = 1100(4)(0)

D(0) = 0

So, at x = 0, there are no dislocated impulses.

To find the number of dislocated impulses at x = 3, substitute x = 3 into the equation:

D(3) = 1100(4)(3)

D(3) = 13200

Therefore, at x = 3, there are 13,200 dislocated impulses.

Learn more about impulses here:

https://brainly.com/question/29297755

#SPJ11

Solve the problem. The number of dislocated electric impulses per cubic inch in a transformer increases when lightning strikes by D=1100(4)×, where × is the time in milliseconds of the lightning strike. Find the number of dislocated impulses at x=0 and x=3

Answer:

P T V n

Initial: 730 mmHg; 298 K; 250 cm³; --

Final: 760 mmHg; 273 K; ?; --

Effect: ↑; ↓; ↓P ↓T; --

250 cm³ x 273 K/298 K x 730 mmHg/760 mmHg = 220 cm³

Explanation:

The magnification of the image formed by the lens is -0.982.

To determine the magnification of the image formed by the lens, we can use the lens formula:

1/f = (n - 1) * (1/r1 - 1/r2)

Where f is the focal length of the lens, n is the refractive index of the lens material, r1 is the radius of curvature of the front surface, and r2 is the radius of curvature of the back surface.

Given that the radii of curvature are 34.5 cm and -26.9 cm, and the refractive index is 1.66, we can substitute these values into the lens formula to calculate the focal length.

Using the lens formula, we find that the focal length of the lens is approximately 13.54 cm.

The magnification of the image formed by the lens can be determined using the magnification formula:

m = -v/u

Where m is the magnification, v is the image distance, and u is the object distance.

Given that the object is placed 42.6 cm from the lens, we can substitute this value and the focal length into the magnification formula to calculate the magnification.

Substituting the values, we find that the magnification of the image formed by the lens is approximately -0.982.

Learn more about magnification

brainly.com/question/21370207

#SPJ11

Answer:

According to this theory:

Each and every molecule of a magnetic substance is a complete magnet in itself, having a north pole and a south pole of equal strength.

In an unmagnetized substance, the molecular magnets are randomly oriented such that they form closed chains.

When the substance is magnetized, the molecular magnets are realigned so that north poles of all molecular magnets point in one direction and south poles of all molecular magnets point in the opposite direction.

When all the molecular magnets are fully aligned, the substance is said to be saturated with magnetism

During heating the magnetized specimen, molecular magnets acquire some kinetic energy. Some of the molecules may get back to the closed chain arrangement. That is why magnetism of the specimen would reduce on heating.

★ Remember :

The reading of scale of a man in an elevator :

A). The elevator moves up at a constant speed\(.\)

∴ Acceleration of elevator = 0

➠ R = mg

➠ 53 × 10

➠ R = 530N

B). It slows at 2m/s² while moving upward.

∴ Acceleration of elevator = -2m/s²

[Negative sign shows that speed decreases with time]

➠ R = m(g + a)

➠ R = 53(10 + (-2))

➠ R = 53 × 8

➠ R = 424N

C). It speeds up at 2m/s² while moving downward.

∴ Acceleration of elevator = 2m/s²

➠ R = m(g - a)

➠ R = 53(10 - 2)

➠ R = 53 × 8

➠ R = 424N

D). It moves downward at constant speed.

∴ Acceleration of elevator = 0

➠ R = mg

➠ R = 53 × 10

➠ R = 530N

(a) When the elevator moves up with a constant speed, the force on the scale is 519.4 N.

(b) When the elevator slows down at 2 m/s² while moving up,  the force on the scale is 625.4 N

(c) When the elevator speeds up at 2 m/s² while moving down, the force on the scale is 413.4 N.

(d) When the elevator moves down at constant speed, the force on the scale is 519.4 N.

The given parameters;

The force that scale must exert on the person is calculated as follows;

F = mg + ma

F = m(a + g)

(a)

When the elevator moves up with a constant speed, the acceleration is zero.

F = m(0 + g)

F = mg

F = 53 x 9.8 = 519.4 N

(b)

When the elevator slows down at 2 m/s² while moving up;

F = m(a + g)

F = 53(2 + 9.8)

F = 625.4 N

(c)

When the elevator speeds up at 2 m/s² while moving down;

F = m(g - a)

F = 53(9.8 - 2)

F = 413.4 N

(d)

when the elevator moves down at constant speed;

F = m(g - a)

F = 53(9.8 - 0)

F = 519.4 N

Learn more here:https://brainly.com/question/18801986

The correct graph should have a positive slope for the initial acceleration phase, a horizontal line for the constant velocity phase, and a negative slope for the deceleration phase.

To determine which graph represents the motion correctly, let's analyze the given information step by step.

The car starts from rest and accelerates at 1 m/s² for 2 seconds.

During this period, the velocity of the car increases linearly, as the acceleration is constant. Therefore, the graph representing this phase should be a straight line with a positive slope.

The car then continues at a constant velocity for 10 seconds.

Since the car maintains a constant velocity during this period, the graph representing this phase should be a horizontal line, indicating no change in velocity.

The car sees a tree blocking the road and applies brakes, decelerating at 1 m/s² until it comes to rest.

During this phase, the car's velocity decreases linearly due to the deceleration. Therefore, the graph representing this phase should be a straight line with a negative slope.

Based on this analysis, the correct graph should have a positive slope for the initial acceleration phase, a horizontal line for the constant velocity phase, and a negative slope for the deceleration phase.

Among the given options, the graph that represents the motion correctly is likely to be a graph that meets these criteria. However, since the options were not provided, I'm unable to directly identify the correct graph.

For more such questions on Acceleration phase

https://brainly.com/question/26408808

#SPJ11

Answer:

im saying 4. its just a guess it makes sense tho

Explanation:

sorry for getting this wrong.

Answer:

longitudinal waves

Explanation:

I got it right

Total resultant velocity=5.11-3.27=1.84m/s

\(\\ \sf\longmapsto ∆P=P\)

\(\\ \sf\longmapsto m_1v_1=m_2v_2\)

\(\\ \sf\longmapsto v_2=\dfrac{m_1v_1}{m_2}\)

\(\\ \sf\longmapsto v_2=\dfrac{61.4(1.84)}{109}\)

\(\\ \sf\longmapsto v_2=112.976/109\)

\(\\ \sf\longmapsto v_2\approx 1.3m/s\)

The velocity of the plane and the pilot before the pilot jumps is 0.25 m/s.

The given parameters;

The velocity of the plane and the pilot before the pilot jumps is calculated by applying the principle of conservation of linear momentum for inelastic collision as follows;

\(m_1u_1 + m_2u_2 = v(m_1 + m_2)\\\\61.4(-5.11) \ + \ 109(3.27) = v(61.4 + 109)\\\\42.68 = v(170.4)\\\\v = \frac{42.68}{170.4} \\\\v = 0.25 \ m/s\)

Thus, the velocity of the plane and the pilot before the pilot jumps is 0.25 m/s.

Learn more about inelastic collision here: https://brainly.com/question/7694106

For waves:

Match the wave to the description:

The wave with the smallest amplitude would produce the softest sound, B.

The wave with the largest amplitude would produce the loudest sound, D.

The wave with the highest frequency would produce the sound with the highest pitch, A.

The wave with the lowest frequency would produce the sound with the lowest pitch, C.

Waves only transfer energy.

The electromagnetic spectrum is made of: radio waves, microwaves, infrared radiation, visible light, ultraviolet radiation, X-rays, and gamma rays.

An acronym to help me remember this from longest to shortest wavelength: ROYGBIV (stands for red, orange, yellow, green, blue, indigo, violet - the colors of the visible light spectrum).

Uses for electromagnetic waves: radio and TV broadcasting, communication via mobile phones, heating food in a microwave oven, infrared cameras for night vision, medical imaging using X-rays, and cancer treatment using gamma rays.

Find out more on waves here: https://brainly.com/question/19036728

#SPJ1

On solving these equations, we get:T = (2 × 30 + 3 × 20 + 60) / 7 = 37.1°CTherefore, the final temperature of the oil mixture in the second case is 37.1°C.Hence, the temperature of the mixture of oils in the pan after all three oils are mixed in is 37.1°C.

In the given problem, the mixing of the oils is done so quickly that there is no heat transfer between the pan and the oils. Also, the heat capacity of each oil is identical. Now, let's solve the given problem. Initial quantities and temperatures of the oils:100 g of cooking oil A at 60°C200 g of cooking oil B at 30°C300 g of oil C at 20°C First case:In this case, we mix 100 g of oil A with 200 g of oil B and 300 g of oil C. Using the law of heat transfer, we can write:Q1

= Here, Q1 is the heat gained by oil A and Q2 is the heat lost by oils B and C.We know that,Q

= mC(T2 - T1), where m is the mass of the oil, C is the specific heat of the oil and T2 - T1 is the change in temperature.So, for oil A,Q1

= 100 × C × (T - 60) (Since oil A gains heat)For oils B and C,Q2

= 200 × C × (T - 30) + 300 × C × (T - 20) (Since oils B and C lose heat)On solving these equations, we get:T

= (2 × 60 + 3 × 20 + 2 × 30) / 7

= 34.3°C Therefore, the final temperature of the oil mixture in the first case is 34.3°C.Second case:In this case, we mix 200 g of oil B and 300 g of oil C first and then add 100 g of oil A.Using the same approach as above, we can write:Q1

= Q2 Here, Q1 is the heat gained by oil B and C and Q2 is the heat lost by oil A.We know that,Q

= mC(T2 - T1), where m is the mass of the oil, C is the specific heat of the oil and T2 - T1 is the change in temperature.So, for oils B and C,Q1

= 200 × C × (T - 30) + 300 × C × (T - 20) (Since oils B and C gain heat)For oil A,Q2

= 100 × C × (60 - T) (Since oil A loses heat).On solving these equations, we get:T

= (2 × 30 + 3 × 20 + 60) / 7

= 37.1°C Therefore, the final temperature of the oil mixture in the second case is 37.1°C.Hence, the temperature of the mixture of oils in the pan after all three oils are mixed in is 37.1°C.

To know more about equations visit:

https://brainly.com/question/29657983

#SPJ11

Answer: 5 = straight, constant

Answer: 6 = unbalanced, velocity

The Nominal value of output is $8,000 if the quantity of money = 20,000, and the price level = 2.5.

Velocity = 4

The quantity of money = 20,000

Price level = 2.5

The real value is the adjusted inflation nominal value. The real value can be received by deducting the price level from the nominal value for term series data from the perspective of economic trends.

To calculate the real value of output from the real GDP, the formula will be:

Real GDP = quantity of money  ÷ Price Level

Real GDP = 20,000 / 2.5

Real GDP = $8,000

Therefore, we can conclude that the real value of output is $8,000.

To learn more about the Nominal value

https://brainly.com/question/31495250

#SPJ4

the maximum speed will decrease by a factor of the square root of 2, or approximately 1.4. the correct answer is A.

The object's maximum speed will drop from the first scenario (when it was released from A) to the second scenario (when it was released from 2A) by a factor of 2. This is due to the fact that the maximum speed of an item linked to a spring is proportional to both the square root of the oscillation's amplitude and the spring constant, divided by the object's mass. The maximum speed will therefore be increased by the square root of 2, or around 1.4, when the amplitude is doubled. Accordingly, the maximum speed will drop from the first scenario to the second scenario by a ratio of 1.4.

learn more about  maximum speed here:

https://brainly.com/question/28552614

#SPJ11