you pull yourself through the snow a distance of 510 meters with a horizontal force of 240 newtons. how much work did you do?

An elevator, suspended by a single cable, has just left the tenth floor and is speed up as it descends toward the ground floor so the answer will be (b).

Acceleration is the rate of change of velocity of an object with the   respect to the time. In other words, it is the amount by which an object's velocity changes in a given amount of time. Acceleration can be positive (speeding up), negative (slowing down), or zero (constant velocity). It is measured in units of  distance per time squared, such as meters per second squared (m/s^2) or feet per second squared (ft/s^2).

Since the elevator is descending and speeding up, its acceleration is downward and increasing. Therefore, the correct motion diagram would be:

(b)

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For the free-body diagram, we need to consider all the forces acting on the elevator. The force due to gravity is always present and acts downward, while the tension in the cable acts upward. Since the elevator is speeding up, the tension in the cable must be greater than the force due to gravity. Therefore, the free-body diagram would look like:

     T

  ------

  \     |

   \    |

    \   |

     \  |

      \ |

       \|

        |

       ---

        mg

where T is the tension in the cable and mg is the force due to gravity.

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If the person climbs the stairs faster, the amount of work and power will increase.

The work done by a 60-kg individual to climb 110 steps with a standard step height of 7 inches (17.8 cm) is calculated as follows:

Work (W) = Force (F) x Distance (D)
F = m x g
W = (60 kg x 9.8 m/s2) x (17.8 cm x 110)
W = 9,816 J

The amount of work done would not change if the person lost weight, because work is only dependent on the amount of force applied to the distance. However, the amount of work and power required would change if the person climbed the stairs faster, as the power (P) is calculated as follows:

P = W/t
where t is the time taken.

Therefore, if the person climbs the stairs faster, the amount of work and power will increase.

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Answer:

Explanation:

Given:

Mass of bicyclist = 50 kg

Mass of bicycle = 10 kg

Initial velocity (u) = 5 m/s

Final velocity (v) = 10 m/s

Find:

(a) What was the total kinetic energy before accelerating = ?

(b) What was the total kinetic energy after accelerating = ?

(c) How much work was done to increase the kinetic energy of the bicyclist = ?

Computation:

Total mass (M) = 50 kg + 10 kg = 60 kg

1. The total kinetic energy before accelerating = 1/2[Mu²]

The total kinetic energy before accelerating = 0.5[(60)(5)²]

The total kinetic energy before accelerating = 750 J

2. The total kinetic energy after accelerating = 1/2[Mv²]

The total kinetic energy after accelerating = 0.5[(60)(10)²]

The total kinetic energy after accelerating = 3,000 J

3. Total work done = Δ K.E

Total work done = 3,000 J - 750 J

Total work done = 2,250 J

Answer:

8 m/s²

Explanation:

Centripetal acceleration formula:

As you can see, the mass of the yo-yo is not relevant to this problem.

We are given that the velocity of the yo-yo is 4 m/s.

The radius of the circle formed by the yo-yo on a 2-meter long string is 2 meters.

Substitute these known values into the equation.

The centripetal acceleration of the yo-yo is 8 m/s².

Volcanoes are formed due to geological activity inside the Earth’s crust, where magma rises to the surface and outflows onto the ground surface. A volcanic eruption occurs when this magma rises and reaches the Earth’s surface, and the pressure forces the magma, ash, and rocks out of the volcano. Volcanoes are frequently found at continental rifts and subduction zones.

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The motor needs to deliver approximately 176.39 kW of power to lift the elevator at an average speed of 18 m/s.

To calculate the power required by the motor, we need to know the mass of the elevator and the height it needs to travel. Let's assume a mass of 1000 kg and a height of 500 meters.

The work done by the motor to lift the elevator is given by:

work = force x distance

The force required to lift the elevator is equal to its weight, which is given by:

force = mass x gravity

where gravity is approximately \(9.81 m/s^2.\)

So, the force required to lift the elevator is:

force = 1000 kg x 9.81 \(m/s^2\)= 9810 N

The distance the elevator needs to travel is 500 meters.

The work done by the motor is:

work = force x distance = 9810 N x 500 m = 4,905,000 J

The power required by the motor is given by:

power = work / time

To find the time, we can use the average speed of the elevator and the distance traveled:

time = distance / speed = 500 m / 18 m/s = 27.78 s

So, the power required by the motor is:

power = 4,905,000 J / 27.78 s = 176,390 W or 176.39 kW

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The measure of the angle WXY after applying appropriate propertiy is ∠WXY = 107°.

The angle sum property of a quadrilateral states that the sum of the interior angles of any quadrilateral is always equal to 360 degrees. This means that if you draw any quadrilateral, such as a square, rectangle, or parallelogram, and measure the angles inside the shape, the total of all those angles will always add up to 360 degrees.

Given a structure WXYZ with measure of ∠Y = ∠Z = 90° and ∠W=73°.

We have to find measure of ∠X .

Since, WXYZ is a closed figure having 4 sides, so it is a quadrilateral.

ANGLE SUM PROPERTY OF QUADRILATERAL

Sum of angles of a quadrilateral is always 360°

Thus, applying angle sum property to the given quadrilateral.

∠Y + ∠Z + ∠W + ∠X = 360°

90° + 90° + 73° + ∠X = 360°

253° + ∠X = 360°

∠X = 360° -253°

∠X = 107°

Thus, measure of angle ∠WXY = 107°.

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Answer:

WXY= 107

Explanation:

just did it

The work done by force f on the proton is \(- 6.912 x 10^-34 J\).

The work done by force (f with arrow) when a proton moves along the straight-line path from the point (0.10 m, 0) to the point (0.10 m, 0.3 m) is given by:Work = Change in potential energy of the protonThis is because the force is conservative (i.e., it doesn't depend on the path taken by the proton).We know that the proton moves only along the vertical direction, therefore, its displacement is:∆x = 0and

∆y = 0.3 mThe potential energy of a proton is given by:

Potential energy = - q * V where

q = charge of proton (\(1.6 x 10^-19\) C)

V = potential difference between two points at which proton movesThe potential difference between the two points is given as follows:V = VB - VAwhere

VB = potential at point (0.10 m, 0.3 m)VA

= potential at point (0.10 m, 0)We can take

VA = 0 since we are considering it as reference level of potential energy.

The potential at point (0.10 m, 0.3 m) can be calculated as follows:We know that the electric field due to a point charge is given by:E = \(k * q / r^2\) where

k = Coulomb's constant (\(9 x 10^9 N.m^2.C^-2\))

q = charge of point charger

r = distance between point charge and point of interestThus, the electric field at point (0.10 m, 0.3 m) due to the charge is: E = \(k * q / r^2\) where

q = proton charge (\(1.6 x 10^-19\) C)

r = distance between proton and charge

= 0.1 mThus,

E = (\(9 x 10^9\)) * \((1.6 x 10^-19) / (0.1^2)\)

= \(1.44 x 10^-14\) N/CThe potential at point (0.10 m, 0.3 m) due to the charge is:

V = Edwhere

Ed = distance moved by proton

= ∆y

= 0.3 mThus,
\(V = 1.44 x 10^-14 * 0.3\)

= \(4.32 x 10^-15\) VTherefore, the potential difference between the two points is:

V = VB - VA

= \(4.32 x 10^-15 - 0\)

= 4.32 x 10^-15 JThus, the work done by force f on the proton is:

Work = Change in potential energy of the proton

= - q * (VB - VA)

\(= - (1.6 x 10^-19) * (4.32 x 10^-15)\)

\(= - 6.912 x 10^-34 J\).

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Answer:

C. Surface area

Explanation:

The rate of  chemical reaction depends on various factors such as:

Effect of surface area of reactants: the rate of a chemical reaction can be increased by increasing the the area of contact of the reacting substances. This is especially important when one or more of the reactants are solids., because only the particles of the solid that are exposed are able to take part in the reaction at each instant of time. Therefore, the greater the surface area of the solid reactant particles the faster the reaction.

The surface area of solid reactants can be increased by grinding or pelletizing, thus allowing for a greater contact between the reacting particles,

The instance in which one of the solid reactants was treated in a coffee grinder before adding to the reaction container is one way of increasing the surface area of a reactant.

Answer:

Please translate this into Spanish! Sorry I can't :(

Explanation:

Disadvantages of Friction:

Friction produces unnecessary heat leading to the wastage of energy.

The force of friction acts in the opposite direction of motion, so friction slows down the motion of moving objects.

Forest fires are caused due to the friction between tree branches.

There are 0.506 grams in 0.02 moles of Mg

To find the grams of Mg in 0.02 mol, you can use the formula:

grams = moles × molar mass

In this case, moles = 0.02 mol, and the molar mass of Mg = 25.3 g/mol. Plug in the values:

grams = 0.02 mol × 25.3 g/mol

grams = 0.506 g

So, there are 0.506 grams of Mg in 0.02 mol.

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Answer: d boiling water

Explanation: the water is boiling and bubbling cause the molecules are so fast and they hit off each other

Answer: D.

Explanation: Just took the quiz.

Answer:

D. F represents the activation energy

Explanation:

Answer:

Explanation:

3 and 4G networks, Bluetooth, and Wi-Fi technologies. my opinions

Answer:

convection

Explanation:

I hope this helps

Explanation:

The continuity equation is given by the formula A1v1 = A2v2, where A1 and A2 are the cross-sectional areas of two points in a fluid flow, and v1 and v2 are the velocities of the fluid at those points. In terms of diameters, we have:

A1 = π(d/2)^2 and A2 = π(D/2)^2.

Substituting these into the continuity equation, we get:
π(d/2)^2 * v A = π(D/2)^2 * v B.

Now, we can solve for the ratio of speeds, v B/v A:
v B/v A = (π(d/2)^2 * v A) / (π(D/2)^2 * v A).

Cancelling out the π and v A terms, we have:
vB/vA = (d/2)^2 / (D/2)^2.

Given the diameters d = 0.6 cm and D = 15 cm, we can now find the ratio of the speeds:
v B/v A = (0.6/2)^2 / (15/2)^2 = 0.09 / 56.25 ≈ 0.0016.

So, the ratio of the speeds, v B/v A, is approximately 0.0016. Write the continuity equation and the numerical check in the appropriate spaces in the lab manual for activity 2.

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common exclusions, Due of their catastrophic character, the aforementioned risks—earth movement, landslide, mine material, and mudflow—are not covered by the dwelling insurance.

The Basic Form is designed on a named dangers basis and only covers the risks of fire, lightning, and internal explosion. It excludes theft and damage to trees, shrubs, and plants.

The Dwelling Policy's Coverage C for Personal Property provides coverage for damaged household and personal property that is being transported between the insured's old and new homes.

What is Dwelling Policy's?

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Given,

Mass of the sample, m=47 g= 0.047 kg

The initial temperature, T₁=80 °F=299.8 K

The final temperature of the sample, T₂=149 °F=338.2 K

Therefore the total raise in the temperature,

The specific heat capacity of the aluminum, c=0.903 J/(g · °C)= 903 J/(kg · K)

The heat required to raise the temperature of a sample by a temperature of ΔT is given by,

On substituting the known values in the above equation,

Therefore the heat required to raise the temperature of the sample from 80 °F to 149 °F is 1629.7 J

In many ways, an electric circuit is like the plumbing system in a home. The voltage on an electric circuit corresponds to the pressure in a plumbing system.

Just as water flows from a high-pressure area to a low-pressure area in a plumbing system, current flows from a high-voltage area to a low-voltage area in an electric circuit.

Similarly, just as pipes in a plumbing system can be thought of as resistors that limit the flow of water, resistors in an electric circuit limit the flow of current.

The flow rate of water in a pipe is determined by the pressure difference across the pipe and the resistance of the pipe. Similarly, the flow of current in a resistor is determined by the voltage difference across the resistor and the resistance of the resistor.

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The store that has less energy at the end than it had at the start is called a net energy loss store.

Energy is the capacity to do work or to produce heat, light, or other forms of energy. It exists in several forms such as kinetic energy (energy of motion), potential energy (stored energy), electrical energy, thermal energy, light energy, gravitational energy, sound energy, and chemical energy. Energy can be converted from one form to another such as electricity is typically generated from the conversion of mechanical energy. Energy is essential for the functioning of the universe, from stars and galaxies to the complex systems of the human body. Conservation of energy is an important concept in physics and everyday life, as it enables us to maximize the useful energy available from a given source and minimize waste.

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The tension in the cello string is approximately 88.6 N.

The frequency of the fundamental mode of vibration of a string can be calculated using the formula:

f = (1/2L) √(T/μ)

Where

We can rearrange this formula to solve for the tension T:

T = (4π^2μL^2)f^2

Where we have substituted the given frequency f and the length of the string L.

The linear mass density of the string μ is given by the mass per unit length, which can be calculated as:

μ = m/L

Where m is the mass of the string.

Substituting the given values into the formula for T, we get:

T = (4π^2)(m/L)(L^2)(f^2)

T = 4π^2mf^2

T = 4π^2(0.0018 kg)(113 Hz)^2

T ≈ 88.6 N

Therefore, the tension in the cello string is approximately 88.6 N.

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NOT an event horizon is its binary counterpart, which transports matter to it.

To refer to the item or person that is the target of an action, we typically use the word "object." Alternatively, the recipient. In a sentence, a verb's action is transferred to a noun or pronoun as a direct object. It typically responds to the what- or whom-questions regarding the verb.

Icons, cursors, buttons, sprites, and other complicated artworks can be made from a collection of simple visual pieces called image objects. Without having to sketch a single pixel, Image Objects let you express creativity.

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7.6 Gy of gamma-ray photons cause the same biological damage as 0.38 Gy of alpha radiation.

The ability of radiation to cause biological harm is assessed using the concept of “biological equivalent dose.” One gray (Gy) of gamma-ray photons induces the same biological damage as 1 Gy of any other type of ionizing radiation, according to this principle.

The biological equivalent dose (BED) is determined by multiplying the absorbed dose by a radiation-weighting factor (WR).For example, 1 Gy of gamma-ray photons has a WR of 1, while 1 Gy of alpha radiation has a WR of 20.

                       As a result, 0.38 Gy of alpha radiation is biologically equivalent to (0.38 Gy × 20) 7.6 Gy of gamma-ray photons.Given that 1 Gy of gamma-ray photons causes the same biological harm as 1 Gy of any other ionizing radiation, 7.6 Gy of gamma-ray photons induce the same biological damage as 0.38 Gy of alpha radiation.

                               In summary, 7.6 Gy of gamma-ray photons cause the same biological damage as 0.38 Gy of alpha radiation.

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If the coefficient of kinetic friction between a 26 kg crate and the floor is 0.34, the required horizontal force to move the crate at a steady speed is 86.6 Newton.

Steady speed means the acceleration is zero.

According to the Newton's first law of motion, to produce a motion with zero acceleration, the net force must be equal to zero.

In the problem, the forces are the horizontal force and the friction force.

Hence, the net force is:

∑F = 0

Fh - friction = 0

Fh - μ . mg = 0

Where:

Fh = horizaontal force

m = mass of the crate = 26 kg

g = acceleration due to gravity = 9.8 m/s²

μ = coefficient of kinetic friction = 0.34

Plug all the parameters into the equation,

Fh - 0.34 x 26 x 9.8 = 0

Fh = 86.6 N

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Answer:

The Average kinetic Energy of all the atoms and molecules of substance

Explanation: