If a beam of light enters one medium from another medium, what quantity does not change?

A - Direction

B - Speed

C - Wavelength

D - Frequency

The voltage in a battery is 9 volts. The resistance is 3 ohms. What is the current?

As Douglas considers his wife's condition, he realizes that the change having the most impact is "the one that began to steal her memories".

Marcus drove his Honda Prelude for 4 hours at a rate of 55 miles per hour. How far did he travel? A) 11 miles B) 55 miles C) 110 miles D) 220 miles

Radius of Betelgeuse

A physics major is cooking breakfast when he notices that the frictional force between the steel spatula and the Oiled Steel frying pan is only 0.100 N. Knowing the coefficient of kinetic friction between the two materials (0.

Which statement describes how light behaves when it strikes a translucent material? A. Light is scattered. B. Light is transmitted. C. Light is reflected. D. Light is absorbed.

A certain gas is present in a 15.0 l cylinder at 2.0 atm pressure. if the pressure is increased to 4.0 atm the volume of the gas decreases to 7.5 l.

Choose all the answers that apply. To qualify as a planet, a celestial object must: have an irregular shape revolve around the sun orbit in a clear area have enough gravity to have a spherical shape have a satellite

Oxygen makes up the largest part of living cells at 65%. What is the percentage of the second-most abundant element in living cells?

Acceleration is defined as the rate of change for which of the following? A. time B. velocity C. position D. displacement