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Trava [24]
3 years ago
11

A man does 500 J of work pushing a car a distance of 2 m. How much force does he apply? Assume there is no friction.

Physics
2 answers:
Dmitry [639]3 years ago
6 0

The correct answer is A. 250N

Work is a product of force and distance.

That is, work done=force×distance

Therefore substituting for the values in the question:

500J=force×2m

force= 500Nm/2m=250N

another unit for work done is Nm as force as the SI unit of force is newtons and distance in meters

CaHeK987 [17]3 years ago
6 0

Answer:

250

Explanation:

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3 years ago
An ice-making machine inside a refrigerator operates in a Carnot cycle. It takes heat from liquid water at 0.0 ∘C and rejects he
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Answer:

2.36 x 10^6 J

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Tc = 0°C = 273 K

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Let Energy supplied is E which is equal to the work done

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Use the Carnot's equation

\frac{Q_{H}}{Q_{c}}=\frac{T_{H}}{T_{c}}

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QH = 309.8 x 10^5 J

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3 years ago
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svlad2 [7]

Answer:

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