A box weighing 100 newtons is pushed up an inclined plane that is 5 meters long. It takes a force of 75 newtons to push it to the top, which has a height of 3 meters. What is the efficiency?

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Answer 1

Answer: the efficiency is 575 newtons

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Radiation: transferred energy
Convection: Transfer of heat
Conduction: transfer of electric charge

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How is power defined?A.the quantity of work accomplished
B.the direction of the work
C.the total distance an object is moved
D.the rate at which work is accomplished
Please Help

Answers

The correct answer to this question is D) The rate at which work is accomplished.

EXPLANATION:

Let us consider a body performs W amount of work due to the application of some external forces.

Let the body does that work during the time interval of t seconds.

Hence, the power of the body is defined as the rate of doing work or the work done per unit time. We know that energy is the capacity to do work. So, power can be defined as the rate of consumption of energy.

Mathematically power can be written as -

Power P = $(W)/(t)$ .

Hence, the correct definition of power is that the rate at which work is accomplished.

The power is the rate at which work is accomplished, option $D$ is correct.

Further Explanation:

The power is the rate of transformation energy which is used by another body.

The power is the quantity with only magnitude so it is a scalar quantity. The standard of international unit is watt, it is also written as J/s. The standard of international unit watt in honor of James Watt.

A quantity is said as a vector if it has some magnitude and direction in order to give the details regarding the quantity.

A quantity is said as a scalar if it has only the magnitude in order to give the details regarding the quantity.

Concept:

The term power is defined as “The rate at which the work is finished or the energy is transferred from one place to another or transformed into another form.”

The term energy is defined as the capacity to do work or result in some displacement by applying some force.

The expression for power is:

$\fbox{\begin\np =\frac{{\Delta w}}{{\Delta t}}\end{minispace}}$

Here, $p$ is the power, $\Delta w$ is the change in energy and $\Delta t$ is the change in the time.

Therefore, the power is the rate at which work is accomplished, option $D$ is correct.

Learn more:

1. Work and power brainly.com/question/9566221

2. Calculate power brainly.com/question/2829572

3. Energy and SI unit https://brainly.in/question/1227001

Answer Details:

Grade: Middle school

Subject: Physics

Chapter: Kinematics

Keywords:

Define, power, quantity, work, accomplished, direction, total distance, object, moved, rate, option, D.

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Answer:

Refer below for the explanation.

Explanation:

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