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Praxis II General Science

Category - Physics

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John pushes a refrigerator with 40 N of force over 10 meters. How much work has he done?

No work at all.
40 joules.
400 joules.
800 joules.
1000 joules.

Explanation

Answer: C - John has done 400 joules worth of work. Work is calculated as a force applied over a distance, or W = F*d. Thus, W = 40N*10m = 400 J.

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