A 400. kg roller coaster car is traveling at a constant speed of 12 m/s through a dip with a radius of curvature of 40m. What is the normal force acting on the car at the bottom of the dip?

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.

Avoltaic cell converts chemical energy to

The energy released by a nuclear fusion reaction is produced when