a hail falls from a great height if half of the mechanical energy is converted into heat, from what - Physics - Kinetic Theory and Thermodynamics

Question

​a hail falls from a great height if half of the mechanical
energy is converted into heat, from what height it should fall so
that it melts completely -
a)700m
b)7m
c)70km
d)700km

Pintu B. · Accepted Answer

Dear Student ,
Here in this case ,
W=JH⇒12mgh=J×mL⇒h=4·2×103×8010×2⇒h=67·2 Km≈70 Km
Regards

​a hail falls from a great height. if half of the mechanical energy is converted into heat, from what height it should fall so that it melts completely - a)700m b)7m c)70km d)700km

a hail falls from a great height. if half of the mechanical energy is converted into heat, from what height it should fall so that it melts completely -
a)700m
b)7m
c)70km
d)700km