The amount of energy added or removed to change the state of a substance between liquid and gas with no change in temperature.

-latent heat of fusion

-latent heat of vaporization

You are reshelving books in a library. You lift a book from the floor to the top shelf. The kinetic energy of the book on the floor was zero and the kinetic energy of the book on the top shelf is zero, so no change occurs in the kinetic energy, yet

A car is traveling 12m/s. It approaches a stop sign and decelerates at 4.0m/s squared. How long does it take the car to stop?

Testing shows that a sample of wood from an artifact contains 25% of the original amount of carbon-14. Given that the half-life of carbon-14 is 5730 years, how old is the artifact? OA. 5730 years OB. 22,920 years OC. 17,190 years OD. 11,460 years

The distance between planets varies as they move in their orbits. The minimum distance from the Earth to Mars is about 0.35 AU. About how many kilometers is that? 15,000,000 km 25,000,000 km 55,000,000 km 70,000,000 km

If the first maximum of one circular diffraction pattern passes through the center of a second diffraction pattern, the two sources responsible for the pattern will appear to be a single source. A. True. B. False

A child pulls a wagon 3.0 m using a force of 55 N at an angle 35° above horizontal. The force of friction on the wagon is 12 N. Calculate the net work done on the wagon

Which of these accurately describes a chemical reaction A. products and reactants combine to form new reactants. B. Reactants combine to form products C. Products and reactants combine to form new substances D. Products combine to form reactants

Why construction is present near the bulb

Water, with a density of rho = 1125 kg/m 3 rho=1125 kg/m3, flows in a horizontal pipe. In one segment of the pipe, the flow speed is v 1 = 6.53 m/s v1=6.53 m/s. In a second segment, the flow speed is v 2 = 1.17 m/s v2=1.17 m/s.

If you are standing on a weighing scale in an elevator what happens to your weight if the elevator accelerates up or accelerates down? Are you going to weigh less, weigh more or the same?