Why is a cathode ray tube connected to a vacuum pump?

Two gliders collide on a frictionless air track that is aligned along the x axis. Glider A has an initial velocity of + 4.0 m/s and a mass of mA = 0.20 kg. Glider B is initially at rest and has a mass mB. After they collide, A has a velocity of - 1.

In your own words, explain how the radiations from space detected by Arno Penzias and Robert Wilson provides evidence for the Big Bang Theory.

Imagine you could take a trip in a special vehicle from Earth's surface to its center. You would have food, water, and everything else needed to survive and make the trip there and back.

Which hypothesis could be used in a scientific experiment and possibly lead to more hypotheses and experimentation?

Call in the break up of her relationship with her boyfriend was experience combination of relief anger jealousy and sadness roses experience illustrates what

What would happen if everyone jumped at once?

An airplane cruises at 900 km/h relative to the air. It is flying from Denver, Colorado, due west to Reno, Nevada, a distance of 1200 km, and will then return. There is a steady 80 km/h wind blowing to the east.

On a bus traveling north at 20.0m/s, a child stands up and walks towards the back of the bus at 1.3m/s. What is the child's resultant velocity?

How do you think increasing the resistance in a circuit will affect the current in the wire

A ball is tossed into the air from height of 8 feet with an initial velocity of 8 feet per second. find the time r (in seconds) it takes for the object to reach the ground by solving the equation - 16t + 8t + 8 =