Randomization in an experiment means that the experimental units or subjects are selected as a simple random sample from the whole population under study.
a. true
b. false

Use the right-hand rule for magnetic force to determine the charge on the moving particle. this is a charge.

A250-n box is at rest on a frictionless horizotal floor. then a person shoves the box with a non-zero force of magnitude p. which statement best describes the relationship betweeen p and the motion of the box after it was shoved? -the box will not move when p< 250n but otherwise will accelerate at a constant rate that is directly proportional to p - the box will begin moving at a speed that is directly proportional to p, then will gradually slow to a halt -the box will move with constant velocity at a speed that is directly proportional to p -box will accelerate across the floor at a constant rate that is directly proportional to p

For waves in the ocean, the medium of the waves is a. air b. water c. energy d. a passing boat