Answer:
Explanation:
50 W = 50 J /s
Heat required to melt an object is given by the equation
Q = mL , Q is heat required , m is mass to be melted and L is latent heat of fusion
Given mass to be melted m = .1 kg
L = latent heat of fusion of ice = 334000 J / kg
Q = .1 x 334000
= 33400 J
power of heater = 50 J /s
or it gives heat 50 J /s
time required = 33400 / 50
= 668 s
= 11.33 minutes .
