How long does a 250 W electric motor have to run in order to do 2000J work?
| June 11, 2021 | education
Initial data: N (power of the considered electric motor) = 250 W; A (the work that the electric motor must do) = 2000 J.
The operating time of the electric motor under consideration is expressed from the formula: N = A / t, whence t = A / N.
Calculation: t = 2000/250 = 8 s.
Answer: The electric motor should run for 8 seconds.
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