Predict: if you look closely at some stars in the night sky, you can see slight differences in their color. Some stars look reddish. Others appear orange, white, or blue.

If you are six feet tall how far back from a 3 foot mirror do you have to stand in order to see yourself completely?

In any energy transformation, energy is

27. Find the acceleration of a particle moving with a con- stant speed of 8 m/s in a circle 2 m in radius.

When rocks are analyzed over an increasingly greater distance from a mid ocean ridge what can be said about the polarities of the rocks? A. They are constant B. They alternate once C. They alternate multiple times

What is the force between two charged objects

34. A steam engine operates between 300K and 600K, the maximum possible efficiency of this engine is a. 100% b. 75% c. 50% d. 25%

How many moles of phosphorus trichloride are in 200 grams of the molecule? 62.67 mol 27,466.6 mol 1.46 mol 0.69 mol

A starship passes Earth at 80% of the speed of light and sends a drone ship forward at half the speed of light rela - tive to itself. Show that the drone travels at 93% of the speed of light relative to Earth.

Rubies are used in electronics

Two kids are on a merry-go-round that is turning at a constant rate. ariel is near the outer edge, and bob is closer to the center. ariel has answer (smaller, the same, or greater angular speed?