PE = mgh KE = 2(mv^2)
ME = PE + KE
2.Suppose that ball is rolled down a bowling alley at a speed of 4.2 m/s, what is the kinetic energy of the ball?
energy of the ball?

If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?

This is the number of complete movements of a wave per second.

Asmall electric heater, immersed in 80g of water in a calorimeter of 40j/k raises the temperature from 10.5 degree celsius to 25 degree celsius in 12 minutes. using the same apparatus with 50g of oil instead of water, it is found that the temperature of oil rises from 7 degree celsius to 27 degree celsius in 10 minutes. find specific heat capacity of the oil.