PFY, p. 120
f) Work, watts, joules, time
g) joule per second
13) P= Wd/t= 1000/5= 200 watts
14) Wd= F*d= 300*2
P= Wd/t= 600/6= 100 watts
16)Wd= F*d= 3000*10= 30000
P= Wd/t = 30000/4= 7500 watts= 7.5 kilowatts
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