If object A is somewhat cooler than object B, and object B radiates most of its energy in the visible frequency range, object A may be radiating most of its energy in the frequency range. a. X-ray b. infrared c. ultraviolet

The twister and runaway train are two coasters at the same amusement park. both coasters start at the same height. the coaster for the twister is twice the mass of the coaster for the runaway train. which roller coaster has greater gravitational potential energy at the start of the ride?