A motor with an efficiency of 75% must supply 240 j of useful work. what amount of work must be supplied to the motor? j 180 j 3
20 j 420 ja motor with an efficiency of 75% must supply 240 j of useful work. [ what amount of work must be supplied to the motor? answer is 180j ]
2 answers:
Work applied to motor is 320j.
Answer:
the answer is 320j
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