22. The main difference between speed and velocity involves

A. direction.

B. weight.

C. distance.

D. gravity.

Water is pumped from a 200-ft-deep well into a 100-ft-high storage tank. Determine the power, in kW, that would be required to pump 310 gal/min. The density of water is taken to be 62.4 lbm/ft3.

The flywheel of a steam engine runs with a constant angular velocity of 140 rev/min. When steam is shut off, the friction of the bearings and of the air stops the wheel in 1.9 h.

Why do elliptical galaxies appear yellow or red in color? why do elliptical galaxies appear yellow or red in color? they contain no hot, young blue stars they have very little dust or cool gas, and thus have little ongoing star formation.

A 5-kg brick sliding on an ice covered pond has a kinetic energy of 16 Joules. a box of identical mass but half the speed is sliding on the same ice. How many Joules of kinetic energy does the brick have?

Which of the following is equal to the slope of a distance versus time graph? A. time B. velocity C. distance D. acceleration

I need to learn some interesting facts, any smart people out here?

The planet Pluto has 1/500 the mass and 1/15 the radius of Earth. What is the value of g on the surface of Pluto? (A) 0.3 m/s2 (B) 1.6 m/s2 (C) 2.4 m/s2 (D) 4.5 m/s2 (E) 7.1 m/s2

A ball is dropped from the top of a building. TEL When does the ball have the least kinetic energy? RE O just before it hits the ground - O just after it is released O half way through the fall O after it has hit the ground

Which one of the following does not accurately describe the universal gravitational law? (a) gravitational forces is proportional to the product of the two masses.

Sound with frequency 1300 Hz leaves a room through a doorway with a width of 1.03 m. At what minimum angle relative to the centerline perpendicular to the doorway will someone outside the room hear no sound