Determine the power of the coffee grinder if it does 5.4kJ of work in 30 seconds.
| July 26, 2021 | education
These tasks: t (duration of the coffee grinder) = 30 s; A (perfect work of the grinder) = 5.4 kJ (5400 J).
The power of the considered coffee grinder is determined by the formula: N = A / t.
Let’s calculate: N = 5400/30 = 180 W.
Answer: The considered coffee grinder has a power of 180 watts.
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