The outer core of the earth is primarily made of

A) solid metal.

B) molten metal.

C) primarily water.

D) unknown materials.

A 10.0 kg ball falling at 10.0 m/s hits a mattress and comes to a complete stop in 1 s. what force does the mattress exert to stop the ball

Select all that apply to electrons and energy levels. - Scientists have not yet determined exactly why electrons do not collapse into the nucleus. - Electrons cannot be located between levels except when they are in the process of moving.

Tina's calculations of the tarantula found that the spider was able to cover 20 centimeters in five seconds what was the average speed of the spider in miles per hour

A single mass (m1 = 4.4 kg) hangs from a spring in a motionless elevator. The spring constant is k = 275 N/m. Now, three masses (m1 = 4.4 kg, m2 = 13.2 kg and m3 = 8.8) hang from three identical springs in a motionless elevator.

The yearly rainfall in the rainforest is between 50 - 260 inches? id weather or climate

For each group of terms, write a sentence that shows how the terms relate. position: time: motion

What is LiCl + Br2> LiBr + Cl2

When mechanical energy is transformed,

If you are asked to determine an object's speed, what information must you have?

n aluminium bar 600mm long, with diameter 40mm, has a hole drilled in the center of the bar. The hole is 30mm in diameter and is 100mm long.