A substance changes from a liquid to a gas during evaporation because a. energy is released. b. energy is absorbed. c. energy is lost. d. energy is created.

You slide a breakfast plate along the counter toward your friend, but your friend misses it and the plate slides off the edge of the counter. The counter is 0.93 m high and the plate slides off at 0.61 m/s.

A caterpillar climbs up a one-meter wall. For every 2 cm it climbs up, it slides down 1 cm. It takes 10 minutes for the caterpillar to climb to the top. Calculate the speed at which the caterpillar travels in cm/s.

Which of these is a mixture? oxygen carbon air carbon dioxide

Most scientists believe the Big Bang Theory explains which of the following questions? A. How our planets and moons formed B. How our Universe began C. How the sun turns hydrogen into helium D. How fast light travels through space

Interaction between two charged particles is called

Venus's average distance from the sun is 0.72 AU and Saturn's is 9.54 AU. Calculate the orbital velocity of Venus and Saturn around the sun. (The mass of the sun is 1.99 X 10^30 KG. an AU is 1.50 X 10^11 M.

Caleb's parent drove him to a swim meet 208 km away. It took them 2 hours, which included a 15-minute break to refuel. What was their average driving speed?

Why is thermal energy from the Sun transferred to Earth through electromagnetic waves instead of any other type of thermal energy transfer? Electromagnetic waves can carry energy through matter. Electromagnetic waves can travel through empty space.

Why do different elements emit different colors of light

In an experiment, 108 J of work was done on a closed system. During this phase of the experiment, 79 J of heat energy was added to the system. What was the total change in the internal energy of the system?