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A cell will deliver 3000 J of energy to a 2 W electric motor before the cell is exhausted. How long will the motor run?

A. 25 minutes
B. 100 minutes
C. 1500 minutes
D. 6000 minutes

Answer :

Final answer:

A 2W electric motor running on a cell delivering 3000J of energy will run for 25 minutes, calculated by dividing the energy by the power and converting seconds to minutes.

Explanation:

To find out how long a 2W electric motor can run on a cell that delivers 3000J of energy, use the formula for power: power = energy / time. Therefore, time = energy / power. Substituting the given values, time = 3000J / 2W = 1500 seconds. Since there are 60 seconds in a minute, the motor will run for 1500 / 60 = 25 minutes.

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