In circular orbit, the gravitational force on a satellite is a. constant in magnitude. b. at right angles to satellite motion. c. both of these. d. neither of these

I would say C. if im wrong, im sorry. but if im right your welcome. i didnt guess tho.

The answer should be C.

most of them using statistics and defining how things are being measured

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.