Amarble slides without friction in a vertical loop around the inside of a smooth, 28.6 cm diameter horizontal pipe. the marble's speed at the bottom is 4.22 m/s and is fast enough so that the marble never loses contact with the pipe. what is its speed at the top?

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.

While standing outdoors one evening, you are exposed to the following four types of electromagnetic radiation: yellow light from a sodium street lamp, radio waves from an am radio station, radio waves from an fm radio station, and microwaves from an antenna of a communications system. rank these type of waves in terms of increasing photon energy.

Does anyone have the answers to online physics course plato course physics, semester a v3.0