Odpowiedź :
Wyjaśnienie:
W = 0,002kJ = 2J
t = 1/3 min = 20s
P = W/t
P = 2J ÷ 20s = 0,1 W
[tex]dane:\\W = 0,002 \ kJ = 0,002\cdot1000 \ J = 2 \ J\\t = \frac{1}{3} \ min = \frac{1}{3}\cdot60 \ s = 20 \ s\\szukane:\\P = ?\\\\P = \frac{W}{t}\\\\P = \frac{2 \ J}{20 \ s} = 0,1 \ W[/tex]