Why do we see lightning before we hear thunder? A) Light travels faster than sound. B) Sound travels faster than light. C) The lightning forms before the thunder does. D) The ears transmit information more slowly than the eyes.

On what basis are different photons to be distinguished? A. Their energy levels B. The atoms they come from C. Their masses D. Their speeds

Which is a challenge that is most likely unique to urban areas? a. power outages b. shortage of water c. population density d. lack of personal time?

An elderly sailor is shipwrecked on a desert island but manages to save his eyeglasses. The lens for one eye has a power of + 1.17 diopters, and the other lens has a power of + 9.47 diopters.

How can you separate a mixture containing a solid and a liquid? Adding another liquid to the mixture By condensing the liquid Adding more solid to the mixture By evaporating the liquid

Which is equivalent to 243 2/5 3 6 9 12

Describe the general characteristics of the nearest stars. (Size, luminosity, color, etc., do not include specific stars)

A small object placed in the gravitational field of a more massive object will a. accelerate toward the more massive object. b. accelerate away from the more massive object. c. move toward the more massive object at a constant speed. d.

A 0.15 kg baseball falls to the ground with an acceleration of 9.8 m/s2. What is the weight of the baseball? A. 1.47 N B. 1.49 N C. 1.53 N D. 1.64 N

What is the gravitational force excerted on an object called?

What two variables is acceleration dependent on? What is the relationship between these variables and acceleration? (i. E. If you increase one variable what happens to the acceleration?)