8points and brainiest for correct answer
which of the following transfers energy in the form of vibrating electric and magnetic fields?

a. an electromagnet
b. an electromagnetic wave
c. an induced current
d. a generator

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied. true or false

Animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. reactivate d) a dog is getting hot in the sunlight, so he moves to a shaded area.

What is the coefficient of kinetic friction μk between the block and the tabletop?