Why is the density of iron higher than the density of oxygen?

A 0.439 kg puck, initially at rest on a horizontal, frictionless surface, is struck by a 0.307 kg puck moving initially along the x axis with a speed of 2.19 m/s. After the collision, the 0.307 kg puck has a speed of 1.

Almost all energy on earth comes from the

NEWS w Which number has five significant figures? . es NE O A. 0.2350 OB. 8.002 O c. 6.0000 O D. 52,000

Limestone chips dissolve after they are placed in a beaker of dilute acid. Which geologic process is this most similar to?

How is the Periodic Table of Elements organized? By chemical characteristics. By number of electron shells. By number of protons. By number of neutrons.

A train is moving 4.82 m/s when it begins to accelerate. After 24.8s it is moving 7.09m/s how far did it move in that time

List three different emotions?

The jet stream flows from east to west across the United States. True False

You are in a hot air balloon, 350 m above the flat Texas plains. You look out toward the horizon. How far out can you see--that is, how far is your horizon? The Earth's radius is about 6400 km.

You and your housemate have an argument over the cost of the electric bill. You want to turn off the outside porch light before going to bed each night.