PHYSICS MIDDLE SCHOOL

student built a simple heat engine that could lift masses. If the heat engine takes in 300 J of heat and loses 50 J to the environment, how much height will it lift a 1.5 kg mass?

Answers

Answer 1
Answer:

Answer:

So it will lift the mass by h = 17 m

Explanation:

As per energy conservation we know that

Q_1 = W + Q_2

here we know that

Q_1 = 300 J

Q_2 = 50 J

now we have

W = 300 - 50

W = 250 J

so work done by the engine is 250 J

now we have

W = mgh

250 = 1.5 * 9.81 * h

h = 17 m

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Identify the cause of foliation in rocks?

Answers

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A bicycle traveled 150 meters west from point A to point B. Then it took the same route and came back to point A. It took a total of 2 minutes for the bicycle to return to point A. What is the average speed and average velocity of the bicycle?

Answers

Answer:

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0 m/s

Explanation:

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Average velocity is displacement over time.

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s = 300 m / 120 s = 2.5 m/s

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Answers

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Answers

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