A hydrogen atom has 1 electron. In which level is it?

Why is it important for scientists to measure how much precipitation is falling across the world?

A train is approaching the station. Explain what happens to the frequency of the sound as the train draws closer. What do you hear?

If a 100 N net force act on a 50-kg car, what will the acceleration be

What happens when an electric charge passes through a circuit?

A projectile starts from rest and moves 4.8 m down a frictionless ramp inclined at 14◦ with the horizontal. The acceleration of gravity is 9.8 m/s 2. With what speed will it leave the ramp? Answer in units of m/s.

Anything dissolved in water

Length of two cylinders are measured to be L1 = 5.62 + / - 0.01cm and L2 = 4.34 + / - 0.02cm. calculate difference in error and error limit.

If you push an object twice as far while applying the same force, you do ...

Jane, looking for tarzan, is running at top speed (5.2 m/s) and grabs a vine hanging 4.5 m vertically from a tall tree in the jungle. how high can she swing upward?

What is p in physics?