A 142 kg boulder is located near the edge of a cliff 25 m above the ground. What is the gravitational potential energy of the boulder

Which type of electromagnetic radiation has the shortest wavelength?

Two guitars are in tune. They each play the same notes together. What would happen if one guitar slowly has its strings tightened?

A 50.0 g projectile is launched with a horizontal velocity of 657 m/s from a 4.65 kg launcher moving in the same direction at 2.00 m/s. What is the launcher's velocity after the launch?

Find the least common multiple of x2 - 4x - 5 and x2 - 3x - 10. A. (x + 1) (x - 2) (x - 5) B. (x - 1) (x - 5) (x - 2) c. (x + 1) (x - 5) (x + 2) d. (x - 5) (x + 2) (x - 1)

Ionic bonds form when electrons are

1. a substance with a pH of 3 2. a substance with a pH of 10 3. a substance with a pH of 7 4. an indicator 5. a scale that represents the concentration of H30+, 0-14 A.) phenolphthalein B.) base C.) pH scale D.) neutral E.) acid

An advertisement uses a movie star holding a bottle of perfume. This ad is an example of which of the following? A. an appeal of association. B. an appeal to reason. C. an appeal to economics. D. an appeal to patriotism.

An example of an unbalanced force is

When the atom's electrons step down to lower energy levels in a thin cloud of hot gas, what is produced?

Which is the relationship between algae and fungus? Options: Parasitism. Commensalism. Mutualism.