Which of these is an example of a mechanical wave? A. the light of the Sun B. a car stuck in traffic C. the shaking from an earthquake D. X-rays from an X-ray machine at the dentist's office

Least common shape for a galaxy is

What is the most important safety rule in cycling?

A sailboat is heading directly north at a speed of 20 knots (1 knot 50.514 m/s). the wind is blowing toward the east with a speed of 17 knots. (a) determine the magnitude and direction of the wind velocity as measured on the boat.

Electrons are modeled using a "cloud" around the nucleus because they A) can not be precisely located. B) travel at the speed of light. C) exist in many places at once. D) move in an orbit about the nucleus.

The kinetic energy of a ball with a mass of 0.5 kg and a velocity of 10 m/s is J. (Formula:)

What is the outcome of all chemical changes when two substances are combined? A new substance forms with identical properties. The two substances release an odor. The two substances change color. A new substance forms with different properties.

Your myth: Dogs and wolfs are the same species Fact: Evidence:

Friction is a force that speeds up motion between two surfaces that are in contact

Which actions are evidence that a chemical reaction has occurred? Check all that apply. A: a change in color B: the formation of a precipitate C: a clear liquid becoming cloudy D: a change in shape E: the formation of bubbles F: the formation of

Which sphere forms Earth's outermost layer? Atmosphere Biosphere Cryosphere Hydrosphere