The position of an object is given by x = bt3

a. if x and t are meters and seconds respectively, what are the units of b?

b. what is the instantaneous velocity at time t?

c. find the average velocity from t = 0 to t = t

What did J. J. Thomson observe when he applied electric voltage to a cathode ray tube in his famous experiment? A. The stream of cathode ray particles was moving very slowly. B. The glass opposite of the negative electrode started to glow. C.

What is the mass of a bowling ball?

Gravity pulls downward on a rock with a force of 800 N. If you pull upward on the rock with a force of 400 N, what is the total force acting on the rock? A. 400 N downward B. 400 N upward C. 1200 N downward D. 1200 N upward

At which locations in the nuclear power plant would an accident most likely result in the release of fission products?

With an average acceleration of - 2.4 m/s2, how long will it take a cyclist to bring a bicycle with an initial speed of 13.2 m/s to a complete stop? Answer in units of s.

A 6.0 kg box slides down an inclined plane that makes an angle of 39° with the horizontal. If the coefficient of kinetic friction is 0.19, what is the magnitude of the acceleration, in m/s2, of the box down the slope?

Identify the following as a suspension or a colloid. sand in water

A cyclist starts at a position of 0 m and takes 3 s to move east to a position of + 8 m. He then cycles west to a position of + 5 m which takes an additional 2 s. What is the cyclist's displacement? a. + 11mb. - 8mc. - 5m d. + 5m

What happens when you shoot a bullet into the sky?

If you want to lift a 5-kg box to a height of 2 meters, how much work must be done? O A. 2J O B. 50 J O C. 98 J O D. 100