Sally and maria were running around the track during pe. they were not happy and decided to stop and rest once they got to the bleachers. based on the data in the graph, how would you describe the girls' speed while at pe?

When many atoms are split in a chain reaction, a large explosion occurs. this is an example of what type of energy conservation

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.

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?