Silnik o mocy 8 kilowatów pracuje w ciągu 20 minut. Oblicz wykonaną pracę.
P = 8kW = 8000W
t = 20min = 1200s
P = W/t => W = Pt
W = 8000W x 1200s = 9600000J = 9,6MJ
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P=8kW=8000W
t=20min=20*60s=1200s
W=?
P=W/t
W=P*t=8000*1200= 9600000J=9,6MJ
P = 8kW = 8000W
t = 20min = 1200s
P = W/t => W = Pt
W = 8000W x 1200s = 9600000J = 9,6MJ
----------------------------------------------------------------------------------------------------
Litterarum radices amarae sunt, fructus iucundiores
Pozdrawiam :)