Odpowiedź :
W=216kJ= 216000J
t=3min= 180s
P=W/t
P=216000J/180s
P=1200W W(wat jest równy J/s)
[tex]t = 3 \ min = 3\cdot60 \ s = 180 \ s\\W = 216 \ J = 216 \ 000 \ J\\P = ?\\\\P = \frac{W}{t}\\\\P = \frac{216000 \ J}{180 \ s}\\\\P = 1 \ 200 \ W = 1,2 \ kW[/tex]