If a boomerang is thrown 20 m in a straight line and returns exactly at the same spot from which it is thrown, what is its displacement? a) 20 m
b) 40 m
c) 0 m
d) -20 m

Which of the following will cause an induced current in a coil of wire? the constant field of the earth passing through the coil a magnet resting near the coil a magnet being moved into or out of the coil a wire carrying a constant current near the coil

The smallest particle of an element that retains its identity in a chemical reaction. true or false

Acar weighs 15,000 n, and its tires are inflated to a pressure of 190kpa. how large is the area of the car's tires that are in contact with the road?