A person is standing at the top of Copper Canyon. He jumps into the lake entering the water after 5s. What is the velocity when he hits the water? (show work)

Ahollow metal sphere has 6 cm and 11 cm inner and outer radii, respectively. the surface charge density on the inside surface is −100nc/m2. the surface charge density on the exterior surface is:

Sarah and michelle work at a tech company that designs exercise apps. sarah tells michelle she has heard that james, their supervisor, interviewed with a competitor and may be leaving the company, which would open up a management position. what kind of power is sarah exerting?

Smallest intensity of a stimulus that you can detect 50 percent of the time is