Have more energy than
a. ultraviolet rays; x-rays
b. radio waves; visible light
c. gamma rays; infrared rays
d. radio waves; microwaves

In the sport of parasailing, a person is attached to a rope being pulled by a boat while hanging from a parachute-like sail. a rider is towed at a constant speed by a rope that is at an angle of 15 ∘ from horizontal. the tension in the rope is 1900 n. the force of the sail on the rider is 30∘ from horizontal. what is the weight of the rider? express your answer with the appropriate units.

An isotope undergoes radioactive decay by emitting radiation that has a –1 charge. what other characteristic does the radiation have?

Dao makes a table to identify the variables used in the equations for centripetal acceleration. what quantities belong in cells x and y?