Calculate the gravitational potential energy of the water in a lake of volume 100km^3 (mass=1.0x10^14kg). The lake has an average height of 50m above the hydroelectric generators at the base of the dam holding the water back.
3 answers
PE=mgh=massabove*g*50 Joules
mgh= 10^14*9.8*50=4.9*10^12
oik
1 answer