You are about to view and experiment to find out whether a ball that is heavy will roll
down a ramp faster and continue to roll further than a lighter ball. before viewing it,
give your well-stated hypothesis about what will happen.
remember: a good hypothesis can be thought of as a guess, supported by reasoning
and worded as an if/then statement.

What are the theoretical properties of a gas at a temperature of 0 kelvin?

In what direction does an applied force move an object

Ametal ring 4.20 cm in diameter is placed between the north and south poles of large magnets with the plane of its area perpendicular to the magnetic field. these magnets produce an initial uniform field of 1.12 t between them but are gradually pulled apart, causing this field to remain uniform but decrease steadily at 0.240 t/s . (a) what is the magnitude of the electric field induced in the ring? (b) in which direction (clockwise or counterclockwise) does the current flow as viewed by someone on the south pole of the magnet?