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A 100 W engine generates 1000 J of energy. How long did it run for?
A. 1 s
B. 10 s
C. 5 s
D. 100 s

Respuesta :

Lanuel

Answer:

B. 10 s

Explanation:

Given the following data;

Power = 100 Watts

Energy = 1000 Joules

To find the time;

Power can be defined as the energy required to do work per unit time.

Mathematically, it is given by the formula;

[tex] Power = \frac {Energy}{time} [/tex]

Making time the subject of formula, we have;

[tex] Time = \frac {Energy}{Power} [/tex]

Substituting into the formula, we have;

[tex] Time = \frac {1000}{100} [/tex]

Time = 10 seconds