What is the advantage of designing a thermos so that it has a vacuum layer surrounding the area where hot liquids are stored?

2. What is another term, one you'll find on an iPod, for amplitude?

Which of the following is the reason a lever is used in a shovel? A. a lever is used to decrease effort force B. a lever is used to decrease resistance force C. a lever is used to increase resistance force D.

Stars release huge amounts of radiation from their surfaces while on the main sequence. why is this necessary if a star is to maintain hydrostatic equilibrium?

Suppose you are standing on a bathroom scale when you are flying in a jet airplane. for a moment the scale reads less than your actual weight. during that moment, it's exerting an upward force on you that is

How much time (in seconds does it take light to travel 1.20 billion km?

A 62 pound box is on an incline. Determine the minimum force P that would result in the box starting to slide up the incline. (include units with answer)

During a collision with another car, the occupants of a minivan initially travelling at 4.0 m/s come to a complete stop in 0.5 s. What was the acceleration of the occupants of the minivan? a) 8.0 m/s2 b) - 8.0 m/s2 c) 2.0 m/s2 d) - 2.0 m/s2

A system dissipates 12 J of heat into the surroundings; meanwhile, 28 J of work is done on the system.

Charlotte, a 60.0-kg skin diver, shoots a 2.0-kg spear with a speed of 15 m/s at a fish who darts quickly away without getting hit.

All objects are attracted to each other by the force of a. weight. b. mass. c. inertia. d. gravity.