A15-gram bullet moving at 1502 m/s plunges into 2.5 kg of paraffin wax. the wax was initially at 31°c. assuming that all the bullet's energy heats the wax, what is its final temperature (in ºc)? take the mechanical equivalent of heat to be 4 j/cal and the specific heat of wax to be 0.7 cal/g °c

Two friends are having a conversation. anna says a satellite in orbit is in freefall because the satellite keeps falling toward earth. tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/2 . who do you agree with and why?

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.

In a system, when potential energy decreases, then entropy also decreases. true false