Joey wrapped a wire around an iron bolt then connected the ends of the wire to a battery forming a complete circuit. What must have occurred as a result? (A) The energy in the circuit was lost.
(B) The bolt was magnetized.
(C) The bolt started spinning.
(D) Nothing happened because there was no device.

You have been called to testify as an expert witness in a trial involving a head-on collision. car a weighs 1515 lb and was traveling eastward. car b weighs 1125 lb and was traveling westward at 44.0 mph. the cars locked bumpers and slid eastward with their wheels locked for 22.5 ft before stopping. you have measured the coefficient of kinetic friction between the tires and the pavement to be 0.750 . how fast (in miles per hour) was car a traveling just before the collision? (this problem uses english units because they would be used in a u.s. legal proceeding.)

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

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?