It takes about 20kJ to melt an ice cube. If a microwave is rated 1200 W , how much time would it take for it to melt the ice cube? (Physics question)

Question

This is a physics energatics questics pls help fast i have test in half an hour

Answer 1

P = power = 1200 W = 1200 J/s

E = energy = 20,000 J

 

P = E/t

 

t = E/P = (20,000 J) / (1200 J/s) ≅ 16.7 s