Which of the following is an example of an electromagnetic wave?

A. ripples on a lake

B. the honking of a car horn

C. the light from a neon sign

D. aftershocks from an earthquake

What's the total resistance in a circuit that contains three 60 Ω resistors connected in series?

The 'hubble constant, h0' is used to determine

What happens to the temperature of a substance while its changing state?

A small first-aid kit is dropped by a rock climber who is descending steadily at 1.3 m/s. After 2.5 s, what is the velocity of the first-aid kit, and how far is the kit below the climber?

A cat has a mass of 3kg and runs at a speed of 6 m/s how much kinetic energy does the cat have

Which of the following happens when a material undergoes a phase change? a. The temperature changes. b. Heat flows into or out of the material. c. The chemical composition changes. d. The molecules break apart into atoms.

Friction between solids can be most accurately defined as the force that opposes the sliding motion of two surfaces that are touching each other. A. True B. False

1. For a reaction to occur, energy must be to break chemical bonds. O A released OB converted OC absorbed

51 Mm is how many km?

What type of change occurs when water changes from solid to a liquid