Question

From what height a block of ice must fall into a well so that 1/100th of its mass may be melted? (g=10m/s^2)

Answer 1

Explanation:

Given From what height a block of ice must fall into a well so that 1/100th of its mass may be melted? (g=10 m/s^2)

• We know that latent heat has been converted to energy.
• According to question 1/100 th of the mass of a block of ice may be melted if it falls into a well from a certain height.
• So Q = mL = mgh  
• Since it is 1/100 th part we have
• So mL / 100 = mgh
• L / 100 = gh
• 3.4 x 10^5 / 100 = 10 x h
• 10 h = 3.4 x 10^5 / 10^2
• Or h = 3.4 x 10^2 m
• So h = 340 m

Answer 2

Answer:

the correct answer is option b that is 336 m.