While sitting next to a campfire, susan noticed several different forms of energy being transformed from the potential chemical energy of the wood. she correctly named all of the following forms of energy except:

Identical marbles are released from the same height on each of the following four frictionless ramps . compare the speed of the marbles at the end of each ramp. explain your reasoning

Can anybody me with this? ? (picture included.)

Based on the concept of the wave-like nature of light, huygens' theory of light postulates that the more light was "bent" by a substance the slower it would move while traversing across that substance. a) deflection b) interference c) refraction d) resonance