what is the average power supplied by a 60.0 kg person running up a flight of stairs a vertical distance of 4.0 in 4.2s

Answers

Answer 1

Hi there!

We know that:

[tex]P = \frac{W}{t}\\\\[/tex]

Where:

W = Work done (J)

t = time (s)

We can calculate the work using the equation:

[tex]W = \Delta U = mg\Delta h[/tex]

Plug in the given values:

[tex]W = 60(9.8)(4) = 2352J[/tex]

Now, divide by time:

[tex]P = \frac{W}{t} = \frac{2352}{4.2} = \boxed{560W \text{ (Watts)}}[/tex]


Related Questions

Which is a characteristic of tolerance? A.enjoying your hobbies B.accepting diversity C.having pride in your cultureD. knowing many types of people

Answers

Answer:

B

Explanation:

Because Tolerance Is The Level Of Ability That Someone Has To Recognise And Help Others Values And Differences.

what Characteristic of an object is related to both kinetic energy and its potential energy a objects velocity b height c speed d mass

Answers

Answer:

I think it's a. Object velocity

Explanation:

.

Answer:

Object mass

Explanation:

I had answered and thats what it is

What are the main pieces of evidence we use to differentiate a black hole binary from a neutron star binary

Answers

Answer:

Black hole accretion disk emit in the X-rays but neutron star disks are cooler

Hope this Helps

if a car travels 90km/h for 15 minutes it will travel a. bc x 10^d what are the values of a, b, c and d

Answers

Here, Speed = 90 Km/hTime = 15 minutes.Therefore, distance = speed × time= 90 Km/h × 15 min[tex] =( 90 \times \frac{1}{3600} \times 15 \times 60 \times 1000)m \\ = (90 \times \frac{1}{3600} \times 900 \times 1000)m \\ = (90 \times \frac{1}{3600} \times 900 \times {10}^{3} )m[/tex]Here, we have multiplied 1/3600 because we have to convert hour to seconds. We have also multiplied 60 because we have to convert minutes to seconds. Also, we have multiplied 1000 as to convert kilometres to metres.So, the values of[tex]a = 90 \\ b = \frac{1}{3600} \\ c = 900 \\ d = 3[/tex] Answers:a = 90b = 1/3600c = 900d = 3

Hope it helps.

Do comment if you have any query.

How is the resultant displacement affected when two displacement vectors are added in a different order

Answers

Answer: it is not affected what so ever.

Explanation It will still produce the same resultant.

consider an air-filled balloon weighted so that it is on the verge of sinking. now, if you push it beneath the surface, it will

Answers

Given our understanding of physics, we can conclude that once the balloon is pushed under the surface, it will sink.

One key factor to take into account here is to remember that the density of a ballon can change when exposed to a higher pressure. This is due to the elastic nature of the material that makes up the ballon, and the nature of gas atoms that allow them to be compressed.

Therefore, when the balloon is pushed underwater, the surrounding water will squeeze the balloon, thus incrementing its density. Once the density of the balloon rises, this, in addition to the weight to which it is attached, will make it heavier than the water it is in, and the balloon will sink.

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which work is done by effort​

Answers

input

work is done by effort input.

hope it helps

[tex] \: [/tex]

how much does it cost to charge an electric car at a public charging station

Answers

Answer:

Rs 16.5 lakh is a charge of an electric car at a public charging station

You make a bar graph with the following data. What do you plot on the x-axis?

Answers

you make it the independent variable, the part of the data that will continue moving forward with no dependence (eg, time or measurements)

A student has fallen behind on her homework and suddenly realizes that a big research paper is due the next day and she has not even started working on it. She panics, staying up all night to write her paper, but still runs out of time. At the last minute, she finds a research paper online that covers the same topic as her paper, and she copies and pastes large portions of text from the website into her paper. The student’s behavior is an example of what? a violation of intellectual property rights an online invasion of privacy inappropriate use of Internet sites an incident of cyberbullying

Answers

Answer:

Violation of intellectual property rights

Explanation:

Im sorry I am late but for the future people its A! :)) Have a great day :)

What is the total of two or more numbers added together called?

weight

mass

sum

product

Answers

The sum of numbers is the total of two or more numbers added together.

Numbers is the arrangement of digits used to count, measure, and label. There are different types of numbers such as whole numbers, integers, natural numbers and many more.

The four basic mathematical operations are addition, subtraction, multiplication and division.

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name the substance that combines with water in photosynthesis

Answers

Answer:

carbon dioxide

Explanation:

its common sense

Potassium chlorate gives Potassium chloride+Oxygen

Find the Balancing Chemical Equation for the above ​

Answers

Answer:

The balanced equation is given as: $ 2KCl{O_3} \to 2KCl + 3{O_2} $.

during which lunar phase does every solar eclipse occur?

Answers

Answer:

It has to be the "New Moon" because that is when the moon is between the sun and the earth.

A lunar eclipse can occur when the earth is between the sun and the moon.

If the mass of the Earth is doubled, how will the moon’s orbit be affected?

Answers

What Would Happen to the Orbit of the Moon if it Were Twice as Massive? ... The orbit would not change.

HOPE IT HELPS:)

PLS FOLLOW:)

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What is the force that counteracts the thrust force for flight?

Answers

The force which counteracts the thrust force for the flight is known as the drag force, as it opposes the flow.

What is drag force?

Drag is a force that opposes an object's relative motion to a fluid environment in the field of fluid dynamics. It may be among two liquid film (or surfaces) or in between a liquid and a flat wall. The drag force is influenced by velocity, as opposed to other resistive forces like dry contact, which are essentially independent of it.

When a flow is moving at low or high speed, the drag force is equal to the speed for low pressure and to the square of the velocity for high-speed flow. Although viscous friction is what ultimately causes drag, turbulent drag is unaffected by viscosity.

A force in physics is an input that has the power to change an object's motion. A mass-containing object's velocity can vary, or accelerate, as a result of a force. Intuitively, a push or a pull can also be used to describe forces.

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The drag force, which resists the flow, is the force that balances the propulsion force for flight.

What is Drag force?

In the study of fluid dynamics, drag is a force that opposes an object's relative motion to a fluid environment. It could be situated between two liquid surfaces (or films) or between a liquid and a flat wall.

Unlike other resistive forces like dry contact, which are largely independent of velocity, the drag force is affected by it.

For low pressure and high speed flows, respectively, the drag force is equal to the speed for low pressure and the square of the velocity. Although drag is ultimately caused by viscous friction, turbulent.

Thus, The drag force, which resists the flow, is the force that balances the propulsion force for flight.

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A large solar farm has 21 700 solar panels and generates 5.0 MW of power.

1.0 MW = 1.0 × 106 W

Calculate the average power each panel produces.

Answers

Answer:

answer is

Explanation:

average power each panel produces = 21700/ 5×10^6

4340 ×10^-6

that's mean 4340 micro Watt

a car traveled 5,300 km in 1 hour whats the average speed is​

Answers

Answer:

5300km/h

Explanation:

That's an easy question. You can solve it yourself.

The answer can be found by dividing the Distance traveled by the Time.

Now you can solve all the problem of this rule.

Explain how work and power are different. Give an example of doing the same amount of work, but producing different amounts of power.

Answers

Answer:Work is a measurement of energy.

Power is a measurement of energy per time.

So, power measures how fast work is done.

If we raise 1kg up to a height of 1 meter it takes a certain amount of work. It doesn't matter if it takes us 1 second or 1 hour to raise it. It takes more power, energy per second, to raise it in 1 second than to raise it in one hour.

An engines power rating is in horsepower. A higher horsepower car engine will get a certain car up a hill more quickly than if it had a lower horsepower engine. Even though both engines did the same amount of work in getting the car up the hill

Answer:

work is a measurement of energy, but power is how much energy it takes. Two people could do the same amount of work. Sally and James. James may finish his work in 2 days due to the amount of power he puts in, but it may take Sally a week.

Kiley went 5.7 km/h north and then went 5.8 km/h west. From start to finish, she went 8.1 km/h northwest.

Which best describes her numbers?

Answers

Answer:

5.7km/h north and 5.8km/h west are instantaneous speeds, while 8.1km/h Northwest is the average speed.

- A block of mass 4m can move without friction on a horizontal table. This block is attached to another block of
mass m by a string that passes over a frictionless pulley. If the masses of the string and the pulley are negligible,
what is the magnitude of the acceleration of the descending block?

Answers

The magnitude of the acceleration of the descending block is equal to 1.96 m/s².

What is the tension in the string?

Tension can be described as a force acting along the length of a rope or a cable, especially a force that comprises by a flexible medium. Tension can be described as an action-reaction pair of forces acting at each end of the length of the medium. Each endpoint carried tension and force from the weight attached.

Given that the block with mass, M₁ = 4m is placed on the horizontal table.

The block with mass, M₂ = m is attached by a string.

The block (M₂) suspended by the string experiences tension (T) in the upward direction and weight in the downward direction.

M₂g - T = M₂a                                                     ..............(1)

The block (M₁) placed on the table experienced only one force which is tension (T)

T = M₁ a                                                          .....................(2)

From equation (1) and (2):

M₂g -  M₁a  = M₂a  

M₁a  + M₂a  = M₂g

(M₁ + M₂) a =  M₂g

a = M₂g/(M₁ + M₂)

Substitute the value of masses of the blocks:

a = m g /( 4m + m)

a = g/5

a = 1.96 m/s²

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why are some small jovian planet moons geologically active?

Answers

Answer:

tidal heating and/or their composition  

Explanation:

a person with a mass of 15 kg is walking downhill at a velocity of 10 ms what is the Walkers momentum

Answers

Answer:

[tex]150 kg\cdot m/s[/tex]

Explanation:

Same as if he was walking uphill, or horizontally. Momentum is defined as the product of mass times velocity. [tex]p = mv = 15\cdot 10 = 150 kg\cdot m/s[/tex]


4. According to Newton's First Law of Motion, an object with a net force acting on it will

Answers

Answer:

a object with net force on it will stay in motion unless acted on by an equal opposite force.

stay in motion unless acted on with another object in motion

How does the force of gravitation between two objects change when the distance between them is reduced to half?

Answers

Answer:

it is 1 / square root of the change in distance

Explanation:

since the equation of the gravitational force is

[tex]F=G{\frac{m_1m_2}{r^2}}[/tex]

then F and r are inversely related, by the equation

[tex]F \alpha \frac{1}{r^2}[/tex]

this means when F is multiplied by 2 then r^2 is multiplied by half

so when r is multiples by half we first square the number (0.5) ^ 2 = 0.25

so

[tex]F \alpha \frac{1}{(0.25)r^2}[/tex]

which means F is multiples by 1/0.25 or 4 when the radius is halfed

1kg red-hot iron is put into 1 L of cool water. Explain in detail what will happen to the temperatures of both objects.

Answers

The equilibrium temperature of the iron-water mixture will be greater than the initial temperature of the cold water but less than the initial temperature of the hot iron.

According to the principle of conservation of energy, the heat lost by the red-hot iron is equal to heat absorbed by the cold water.

[tex]Q_{I} = Q_{w}\\\\m_IC_I(t_I - T) = m_wC_w (T-t_w)[/tex]

where;

T is the equilibrium temperature

From the equation given above, we can conclude that the equilibrium temperature of the iron-water mixture will be greater than the initial temperature of the cold water but less than the initial temperature of the hot iron.

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If a piece of glass permits light to pass through, then it is considered ___________. A. Transparent c. Transmitting b. Reflective d. Absorbent Please select the best answer from the choices provided A B C D.

Answers

Answer:

not sure, but I thinks it's either Transparent or Reflective

According to the concept of reflection, if  a piece of glass permits light to pass through, then it is considered to be reflective.

What is reflection?

Reflection of light is defined as a property of light ray that when it strikes a smooth surface it bounces back .Objects can be seen due to this property of light.Reflection is produced by all types of waves namely sound waves, light waves, electromagnetic waves.

Reflection of light is governed by laws of reflection which are also called as Snell's laws. According to laws of reflection, angle of incidence and angle of reflection are equal.The incident ray , reflected ray and normal all lie on the same side of the plane.Light travels in a straight line before, after and during the process of reflection.There are 3 types of reflection which are diffuse reflection,specular reflection and glossy reflection.

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An object has an acceleration of 12.0 m/s/s. If the NetForce was tripled and the mass was doubled, then the new acceleration would be _____ m/s/s

Answers

Answer: that would be New acceleration would be 12 m/s²

Explanation:

A cyclist rides 4.7 km east for 17 minutes. He then heads west for 11 minutes, riding 2.9 km. Finally, he rides east for 13 km, which takes 51 minutes.

What is the final displacement of the cyclist from their starting point?



What is the cyclist’s average velocity?

Answers

Answer: Look at Explanation

Explanation:

4.7 east

2.9 west

4.7 - 2.9 = 1.8 to the east

then 13km to the west

-1.8 + 13 = 11.2 to the west left side

when the acceleration of a block in simple harmonic motion on a spring is zero, what other quantity is also zero?

Answers

Hi there!

When the acceleration of a block in SHM is 0 m/s², the NET FORCE must equal 0 N.

0 m/s² acceleration is obtained when the spring is at its equilibrium point, meaning that:

∑F = -kx (x = displacement from equilibrium point in meters)

If the block is at the equilibrium point, displacement = 0m, so:

∑F = -k(0) = 0 N

With Newton's Second Law, ∑F = ma. If the net force is 0 N, then there is no acceleration experienced by the block.

Thus, the other quantity that must be 0 is the block's NET FORCE.

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