The tangential speed at the outer rim of a ferris wheel is 10 m/s. what is the tangential speed of a position halfway from the center to the outer rim?

When an object is heated it contracts. a. true b. false

Compare the horizontal displacement of the two balls as they travel to the ground. what do you observe?

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples