A person lifts a 10 N box 1 m off the ground in 1 s. How much power does she use? P = W/t A. 100 W
B. 20 W
O C. 10 w
O D. 12 W

C. 10 W.

Explanation:

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In this case, since the power the person uses to lift the 10-N load is computed by using the formula:

Whereas W is the work and t the time; we can compute the work by multiplying the force applied in 1 m:

Now, we divide it by the time to obtain:

Since joules over seconds are watts.

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every chemical equation adheres to the law of conservation of mass, which states that matter cannot be created or destroyed. therefore, there must be the same number of atoms of each element on each side of a chemical equation.