Total internal reflection occurs only if

How does mass affect weight

The term "cosmic abundance" is made up primarily of what gases?

After a large snowstorm you shovel 2000 kilograms of snow off your side walk in 1 hour. you lift the shovel to an average height of 1.25 meters while you are piling the snow in your yard. how much work did you do?

What is the amount of electric field passing through a surface called?

A projectile is shot directly away from Earth's surface. Neglect the rotation of the Earth. What multiple of Earth's radius RE gives the radial distance (from the Earth's center) the projectile reaches if (a) its initial speed is 0.

State 3 properties of air Try your best doesn't have to be all of them

Which of the following statements correctly compares the frequency and energy of infrared waves and ultraviolet waves? A Infrared waves have lower frequencies than ultraviolet waves.

An object in the solar system orbits the Sun and has enough mass that its gravity has pulled it into a spherical shape, but it does not have enough gravity to clear its neighborhood of orbiting debris. This object is classified as:

An 8.5 l tire is filled with 0.55 moles of gas at a temperature of 305 k. what is the pressure of the gas in the tire?

Total internal reflection occurs only if