How can damage to living things occur from exposure to X-rays or gamma rays?
A. The human body can overheat.
B. The human body can give off thermal energy,
C. Atoms and molecules in the body can be ionized.
D. Bad cases of sunburn can occur.

Why does the input force have to be greater than the force needed to lift the bale?

An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Aregular polygon has angkes of size 150° each.how many side has the polygon