How can waves travel through ground?

Why do helium balloons float? Talk about density of atoms and compare to elements in the air.

Chemical bonds are formed from the attractive force of atoms for electrons. What is the force called?

A train travels 72 kilometers in 1 hours, and then 64 kilometers in 1 hours. What is its average speed?

Sharpening your pencil makes work easier by: A. decreasing distance and increasing force. B. increasing distance and decreasing force. C. increasing distance and increasing force.

It is believed that during the late Cretaceous period sea levels rose drastically resulting in about a third of the Earth's present land masses being underwater. Which of the following types of evidence supports this theory? A.

What is the maximum angle a light ray can make with the wall of the core if it is to remain inside the fiber?

Heat transfer within a fluid takes place by a. convection currents. b. radiation. c. conduction. d. density. I think it's A

Compare and contrast how wind and glaciers abrade rock

An object of mass 10 kg is accelerated upward at 2 m/s squared. what force is required?

How much work does a supermarket checkout attendant do on a can of soup he pushes 0.600 m horizontally with a force of 5.00 N? Express your answer in joules and kilocalories.