If 2 trains are going at the speed of sound then what is the speed they will stop at

Describe a compression and a rarefaction of a sound wave traveling through air.

Which formula can be used to find the angle if the resultant vector

How many galaxies exist?

A girl holds the end of rope tied at the other end to a tree. The rope is making 3 waves. Which statements describe the wave? Check all that apply. The wave is a mechanical wave. The wave is an electromagnetic wave.

The smallest unit of an element that maintains the properties of that element

A microwave oven operating at 120 volts is used to heat a sandwich if the oven draws 12.5 amperes of current for 45 seconds what is the power dissipated by the oven?

Which of the transformers are step-up transformers? Which of the transformers are step-down transformers?

1 A plane moving at 30m/s drops a load 200m down to the ground. How long did it take to hit the ground.

Can a body be in equilibrium if it is in motion? Explain

What is the average speed in kilometers per second of the earth around the sun?