3 years ago

What is the SI unit for energy? Watt Calorie Joule Newton

2 answers:

8 0

Answer: joule

Explanation: named after English physicist James Prescott Joule . Joule discovered the relationship between heat and mechanical work, which led to the development of the laws of thermodynamics.

DanielleElmas [232]3 years ago

4 0

Joule because he discovered the relationship between heat and mechanical work which led to thermodynamics

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A car starts from rest, speeds up with constant acceleration, and travels 400 meters in 10 seconds. What was the acceleration of

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Answer:

Acceleration of the car will be $a=8m/sec^2$

Explanation:

We have given that car starts from rest so initial velocity of the car u = 0 m/sec

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A machine is supplied Energy at a rate of 4000 W and does useful work at a rate of 3760 W. What is the efficiency of the machine

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The efficiency of a machine is the ratio between the output power and the power in input:
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sorry accidentally posted here.

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