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ludmilkaskok [199]
3 years ago
12

How long will it take a 500 watt electric motor to do 1.5 x10^5 j of work

Physics
1 answer:
Ratling [72]3 years ago
7 0
                  Power  =  (work)  divided by  (time to do the work)

                         500 joule/sec = (1.5 x 10⁵ J)  /  (time)

Multiply each side
by time:                    (time) x (500 joule/sec)  =  1.5 x 10⁵ J

Divide each side
by 500 J/sec:            Time = (1.5 x 10⁵ J) / (500 J/sec)

                                            = (1.5 x 10⁵ / 500)    (J-sec/J)

                                            =   300 sec

                                            =  5 minutes .      
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