Abowling ball has a mass of 6 kg. what happens to its momentum when its speed increases from 2 m/s to 4 m/s?

a. the initial momentum is 6 kg*m/s, and the final momentum is 3 kg*m/s.

b. the initial momentum is 6 kg*m/s, and the final momentum is 12 kg*m/s.

c. the initial momentum is 12 kg*m/s, and the final momentum is 3 kg*m/s.

d. the initial momentum is 12 kg*m/s, and the final momentum is 24 kg*m/s.

A500g object falls off a cliff and losers 100 j from its gravitational potential energy store. if the gravitational field strength g=9.8n/kg, how high is the cliff?

Acoal-fired plant generates 600 mw of electric power. the plant uses 4.8 x 10^6 kg of coal each day, and the heat of combustion of coal is 3.3x 10^7 j/kg. the steam that drives the turbines is at a temperature of 300° c, and the exhaust water is at 37° c. (a) what is the overall efficiency of the plant for generating electric power? (b) how much thermal energy is exhausted each day? (c) what is the change in entropy of the universe for this heat engine? (d) using the same heat reservoirs, what is the maximum possible (carnot) efficiency for a heat engine?

As microwave light travels through a liquid, it moves at a speed of 2.2 x 108 m/s. if the frequency of this light wave is 1.1 x 108 hz, what is the wavelength of this microwave?