Question

a block of ice falls from a height and completely melts if only ¼ of the energy is retained by the block the height of the fall in kilometre should be
$(g = 10ms^{ - 2})$
​

Answer 1

Explanation:

energyQ=mL=mgh

energyQ=mL=mghm is the mass

energyQ=mL=mghm is the massL is the latent heat

energyQ=mL=mghm is the massL is the latent heatg is the gravity

energyQ=mL=mghm is the massL is the latent heatg is the gravityh is the height

energyQ=mL=mghm is the massL is the latent heatg is the gravityh is the heightfrom the question it tooks only 3/4 energy took to melt

energyQ=mL=mghm is the massL is the latent heatg is the gravityh is the heightfrom the question it tooks only 3/4 energy took to melt335000 ×m×34=

energyQ=mL=mghm is the massL is the latent heatg is the gravityh is the heightfrom the question it tooks only 3/4 energy took to melt335000 ×m×34==m×10×hh=

energyQ=mL=mghm is the massL is the latent heatg is the gravityh is the heightfrom the question it tooks only 3/4 energy took to melt335000 ×m×34==m×10×hh=335000×34×10h=

energyQ=mL=mghm is the massL is the latent heatg is the gravityh is the heightfrom the question it tooks only 3/4 energy took to melt335000 ×m×34==m×10×hh=335000×34×10h=25125

energyQ=mL=mghm is the massL is the latent heatg is the gravityh is the heightfrom the question it tooks only 3/4 energy took to melt335000 ×m×34==m×10×hh=335000×34×10h=25125mh=2512510

Hope this will help you