Questions from College Physics

Q: A camera lens (n = 1.50) is coated

A camera lens (n = 1.50) is coated with a thin layer of magnesium fluoride (n = 1.38). The purpose of the coating is to allow all the light to be transmitted by canceling out reflected light. What is...

Q: (a) In Practice Problem 7.11, find the

(a) In Practice Problem 7.11, find the momentum change of the ball of mass m1 during the collision. Give your answer in x- and y- component form; express the components in terms of m1 and vi. (b) Rep...

Q: In Problem 111, the wire that goes through the top corner

In Problem 111, the wire that goes through the top corner of the triangle has a linear mass density of 0.150 g/m. What current in this wire would make it “hover” above the other two? [Hint: The sum of...

Q: A thin film of oil (n = 1.50)

A thin film of oil (n = 1.50) is spread over a puddle of water (n = 1.33). In a region where the film looks red from directly above (λ = 630 nm), what is the minimum possible thickness of the film?

Q: A thin film of oil (n = 1.50)

A thin film of oil (n = 1.50) of thickness 0.40 µm is spread over a puddle of water (n = 1.33). For which wavelength in the visible spectrum do you expect constructive interference for reflection at n...

Q: Suppose we have two tanks, one containing helium gas and the

Suppose we have two tanks, one containing helium gas and the other nitrogen gas. The two gases are at the same temperature and pressure. Which has the higher number density (or are they equal)? Which...

Q: Kyle is climbing a sailboat mast and is 5.00 m

Kyle is climbing a sailboat mast and is 5.00 m above the surface of the ocean, while his friend Rob is scuba diving below the boat. Kyle shouts to someone on another boat and Rob hears him shout 0.021...

Q: Kim says that she was less than 10 ft away from the

Kim says that she was less than 10 ft away from the president when she took a picture of him with her 50 mm focal length camera lens. The picture shows the upper half of the president's body (3.0 ft o...

Q: Rank points A–E in order of the potential, from

Rank points A–E in order of the potential, from highest to lowest.

Q: A transparent film (n = 1.3) is deposited

A transparent film (n = 1.3) is deposited on a glass lens (n = 1.5) to form a nonreflective coating. What is the minimum thickness that would minimize reflection of light with wavelength 500.0 nm in a...