Light traveling through air at 3.00 · 10^8 m/s reaches an unknown medium and slows down to 2.00 · 10^8 m/s. What is the index of refraction of that medium? n =

What does an air bible rise to the surface of a glass of water

A boy stands on ground between two vertical mountains. He is not in the midway between them. He fires a bullet. The 2nd echo is heard 1.92 seconds after the first and 1.47 seconds before the third.

During the day, the sun appears yellow in the sky. But as sunset approaches, the sun appears to change color. This can be explained by the A) absorption of yellow wavelengths on Earth and the reflection of red into the atmosphere.

A person walks 2.00 m east then runs 4.00 m west then turns 1.00 east. what is the person distance?

A parallel plate capacitor (air filled) is connected to a 25 volt battery and left alone for a long time. The charge on the capacitor is 221 nanoCoulombs.

Like the polar bear, the walrus is a strong swimmer, although it does not have the same endurance. For short periods of time, a walrus can swim at an average speed of 9.7 m/s. How far would a walrus swim at this speed in 3.4 minutes?

How did Einstein's and Newton's theories differ in terms of explaining the cause of gravity?

A sled being dragged to the right across loosely packed snow with a rightward acceleration

Imagine two artificial satellites orbiting earth at the same distance. one satellite has a greater mass then the other one which of the following would be true about there motion? 1.

What is energy? (Not the answer from google search.)