Please Help Stuck on a question. Give one example when it might be important to know how much gravitational potential energy is stored by an object.

How to calculate voltage drop in a series circuit

One historical reason that people in the indian subcontinent have been reluctant to use livestock for food has been that a. their digestive systems are unable to handle meat and proteins b. they refused to eat meat in order to show resistance to british imperialism c. they are able to use cattle as a labor mainstay of their agriculture d. they can use the meat from cattle as fertilizer to make crops grow better

If the wavelength is tripled, while the speed of the wave is held constant, what happens to the frequency?