What is the difference between static frication and kinetic friction

When objects are charged by they do not need to touch each other. a. friction b. induction c. conduction d. all of these

Gam radio signals can usually be heard behind a hill, but fm often cannot. that is, am signals bend more than fm. explain. (radio signals, as we shall see, are carried by electromagnetic waves whose wavelength for am is typically 200 to 600 m and for fm about 3 m.)

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted