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.

How does the temperature of the Earth's mantle compare to the other layers of the Earth? A) The mantle is hotter than the core. B) The mantle is hotter than the crust. C) The mantle is the same temperature as the core.

What is the formula for calculating the efficiency of a heat engine

What is the average velocity of atoms in 1.00 mol of neon (a monatomic gas) at 465 K? For m, use 0.0202 kg.

Convert the following degree celsius tempture to degree fahrenheit a. 40c b. 30c

What is a cup of tea like if a tea bag breaks

As you run toward a source of sound, you perceive the frequency of that sound to

What is the biggest problem with invasive species in their new location? A They are always stronger than native species. B They evolve more quickly than native species. C They have higher reproductive rates than native species.

1. Which of the following is an accurate statement? A. Step-down voltage transformers have a different number of turns in the primary than in the secondary winding, so they change the incoming voltage to a higher voltage. B.

Is the Air Force better than the Navy?

A projectile is fired straight up at a speed of 10 m/s. How long does it take to reach the top of its motion? The acceleration due to gravity is 9.8 m/s^2. Answer in units of s.