How much potential energy is stored in a spring that is stretched 15 cm by a force of 72 N?

Aball is thrown straight up into the air with a speed of 21 m/s. if the ball has a mass of 0.1 kg, how high does the ball go? acceleration due to gravity is g = 9.8 m/s^2. a. 22.5 m b. 20.0 m c. 25.0 m d. 17.5 m

What is the relationship between wavelength of light and the quantity of energy per photon?

How does the structure of methanol differ from the structure of methane