An unknown substance has a mass of 15 g and a volume of 4 cm3. Calculate the density of the unknown substance.

What happens to the water particles in a wave? A.) The water particles move in a circular pattern. B.) The wind pushes the water particles down. C.) The water particles move up through the wave. D.) The wave pushes the water particles forward.

Which acids are naturally found in foods and can be safe to eat? Check all that apply. sulfuric acid citric acid hydrochloric acid nitric acid acetic acid

A pitcher exerts 100.0 N of force on a ball with a velocity of 45 m/s. What is the pitcher's power?

Which of the following is part of a atom

The critical angle in air for a particular type of glass is 39.0°. what is the speed of light in this class glass? (c = 3.00 * 108 m/s

If you have a beam perfectly balanced on a fulcrum and put a weight at the very end of one side, is there a way to know where you should put a heavier object on the other end?

Most of the Earth's volcanoes occuWhen fossils or minerals form, certain unstable elements are sometimes locked into them.

a man is standing on the edge of a 20.0m high cliff. he throws a rock vertically with an initial velocity of 10.0m/s. how high does the rock go?

The slope of a velocity time graph over any interval of time gives the during that interval

if light travels in a vacuum at 3.00 x 10^8m/s and its frequency is 7.44 x 10^7 what is its wavelength