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2 years ago

If you were trying to describe the difference between power and work you could say...?

Physics

1 answer:

Paha777 [63]2 years ago

6 0

Answer:

Look to the explanation

Explanation:

Work done is is the energy transferred to or from an object by means

of a force acting on the object.

Work is positive if energy transferred to the object, and work is

negative if energy transferred from the object.

Work = Force in the direction motion of object × its displacement

$W=F*s$

The SI unit of the work is joule (J)

Power is the rate of work

Power = work done ÷ time taken

Power = $\frac{F*s}{t}$

Displacement (s) ÷ time (t) = velocity (v)

Power = Force × velocity

$P=F*v$

The SI unit of the power is watt (w)

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On a windy day, the wind turbine transfers 78 W of power. Calculate the amount of energy the turbine transfers in 10s.

tangare [24]

Answer:

Energy = 780 Joules

Explanation:

Given the following data;

Power = 78 Watts

Time = 10 seconds

To find the energy transferred;

Energy refers to the amount or quantity of power which is being consumed by an individual, group of people or organization over a specific period of time.

Mathematically, energy is given by the formula;

Energy = power * time

Energy = 78 * 10

Energy = 780 Joules

Therefore, the amount of energy the turbine transferred is 780 Joules

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2 years ago

Yolanda is studying two waves. The first wave has an amplitude of 2 m, and the second has an amplitude of 3 m. Which statement a

Anna71 [15]

Answer:

a) Not Accurate

b) Not Accurate

c) Accurate

d) Accurate

Explanation:

Part a

Not Accurate, because destructive interference would lead to maximum possible magnitude of < 3 m

Part b

Not Accurate, because constructive interference would lead to minimum possible magnitude of > 2 m

Part c

Accurate, because destructive interference would lead to maximum possible magnitude of < 3 m by varying the phase difference between two waves she can achieve the desired results.

Part d

Accurate, because constructive interference would lead to minimum possible magnitude of > 2 m by varying the phase difference between two waves she can achieve the desired results.

8 0

3 years ago

A pressure wave is what type of wave

Alex777 [14]

propagated disturbance is a variation

5 0

2 years ago

A light beam travels at 1.94×108 in quartz. The wavelength of the light in quartz is 355 .Part AWhat is the index of refraction

Alja [10]

A) 1.55

The speed of light in a medium is given by:

$v=\frac{c}{n}$