Adiver swims in a pool that is 30 m deep. the diver swims 20 m above the bottom. if the diver descends to 10 m above the bottom, what is the absolute pressure?

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:

How does the electric potential energy between two charged particles change if one particle is reduced by a factor of 3? a. increased by a factor of 3 b. it is decreased by a factor of 9 c. it is reduced by a factor of 3 d. it is increased by a factor of 9

Select all the correct answers. which three statements about electromagnetic radiation are true?