Which of the following represents a chemical change to matter? A. digestion of food B. melting an ice cube C. shredding paper D. crushing an ice cube

Determine the amount of heat transfer required to convert 200 g (0.200kg) of ice to vapor if the initial temperature of the ice is25 degrees C and the final temperature is 100 degrees C. Note thatthere is a 50 g (0.

Without electrons atoms would carry A. no charge at all. B. a positive charge. C. a negative charge. D. an alternating charge.

What's the smallest wavelength?

What force is used to make the back-and-forth motion of a swing higher? A. scrape B. pull C. push

A crate sits on the ground. You push as hard as you can on it, but you cannot move it. At any given time when you are pushing, what is the magnitude of the static frictional force exerted on the crate compared to the magnitude of your push

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