What causes satellites to remain in orbit above Earth? A) Satellites achieve a balance between gravity and their velocity that keeps them in orbit.

B) Satellites reach their escape velocity with the help of scientists and engineers.

C) Satellites have a circular or elliptical orbit.

D) Gravity pulls satellites sideways around Earth's curved surface.

Which of the following changes will increase the capacitance of a parallel-plate capacitor? (there could be more than one correct choice.) a) increase the charge on the plates b) decrease the poten5al between the plates c) increase the potential between the plates d) introduce a dielectric material between the plates e) decrease the separation between the plates