Awheel of radius 30 cm is rotating at a rate of 2.0 revolutions every 0.080 s. (a) through what angle, in radians, does the wheel rotate in 1.0 s? (b) what is the linear speed of a point on the wheel's rim? (c) what is the wheel's frequency of rotation?

Protons and neutrons are found within the nucleus of an atom

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.)

What is created when solids,liquids,an gases mix with one another