Oblicz pracę silnika o mocy 200 W, który pracował przez 1h.

1. t = 1h = 3600s P = 200W W = Pt = 200W * 3600s = 720kJ PROSZĘ :D

Dane:                             Szukane: P= 200W                           W=? t=1h=60min=3600s                              [latex] Pfrac{W}{T} [/latex]                                                                                       Pt=W                                  W=p*t=200W*3600s=720000J                                     720000J=720KJ