18. What is the kinetic energy of an object that has a mass of 30 kilograms and moves with a velocity of 20 m/s? A. 6,000 J B. 5,880 J C. 2,940 J D. 12,000 J

A 2-way light bulb for a 110 V lamp has filament that uses power at a rate of 50.0 W. What is the resistance of the filament?

Assuming 100% efficient energy conversion, how much water stored behind a 50 centimetre high hydroelectric dam would be required to charge battery

Assume that our computer stores decimal numbers using 16 bits - 10 bits for a sign/magnitude mantissa and 6 bits for a sign/magnitude base-2 exponent. (The way we showed in class.) Show the internal representation of the following decimal quantities.

What is the weight, in pounds, of a 185-kg object on jupiter? express the weight numerically in pounds?

How fast would you have to throw a baseball (m = 145 g) to give it the same momentum as a 10-g bullet traveling at 800 m/s?

The rate at which the earth's surface loses heat and keeps earth temperature at which living things can survive

Describe the motion of something floating in water waves

A trailer mechanic pushes a 2500 kg car, home to a speed v, performing a job during the 5000 J. In this process, the car moves 25 m.

What do cell phones require to work? A. The GPS system B. Ultraviolet rays C. A cellular system D. X-rays

Josiah is going to have a cup of hot cocoa. If he wants the cocoa to stay warm as long as possible, which type of cup should he put his hot cocoa in? A. a foam cup B. a glass cup C. an aluminum cup D. an iron cup