A man climbs a wall that has a height of 8.4 meters and gains a potential energy of 4,620 joules. His mass is about ___ kilograms.

For the examples below, explain what a physical change or a chemical change has occurred. Justify your answer A. When you mix baking soda and vinegar, carbon dioxide is released. B. You build a tall sand castle at the beach.

What type of plant boundary is associated with the formation of an ocean boundaries?

What kind of process can create "rogue" waves? a. Constructive interference c. Refraction b. Destructive interference d. Standing waves

Inbreeding and hybridization are two different types of

A roller coaster has a mass of 425 kg. It sits at the top of a hill with height 66 m. If it drops from this hill, how fast is it going when it reaches the bottom? (Assume there is no air resistance or friction.)

What produces an electromagnetic wave? A) An oscillating or accelerating electric charge B) An electric charge moving at constant velocity C) A static electric charge D) A magnetic monopole moving at constant velocity

A physics book has a height of 25.8 cm, a width of 20.2 cm, and a thickness of 2.90 cm. (a) What is the density of the physics book if it weighs 20 N? kg/m³ (b) Find the pressure that the physics book exerts on a desktop when the book lies face up.

A 24 volt battery is connected to a 3Ω resistor and a 5Ω resistor in series. What is the current in the circuit?

Two technicians are discussing a problem where the brake pedal travels too far before the vehicle starts to slow. Technician A says that the brakes may be out of adjustment.

What are three types of muscle fibers? A.) smooth, intermediate-twitch, cardiac B.) slow twitch, intermediate twitch, fast twitch C.) smooth, cardiac, skeletal D.) slow twitch, fast twitch, involuntary