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How much work does a supermarket checkout attendant do on a can of soup he pushes 0.600 m horizontally with a force of 5.00 N? Express your answer in joules and kilocalories.

Sagot :

MathPhys

Answer:

3.00 J

7.17×10⁻⁴ kcal

Explanation:

Work (W) is equal to force (F) times the distance (d) along the direction of the force. One Joule is the equivalent of a Newton-meter, and there are 4184 Joules in one kilocalorie.

W = Fd

W = (5.00 N) (0.600 m)

W = 3.00 J

Rounded to three significant figures, the work done is 3.00 Joules. Converting to kilocalories:

W = 3.00 J × (1 kcal / 4184 J)

W = 7.17×10⁻⁴ kcal

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