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Question: A tank of gasoline (n = 1.40) is open to the air (n = 1.00). A thin film of liquid floats on the gasoline and has a refractive index that is between 1.00 and 1.40. Light that has a wavelength of 626 nm (in vacuum) shines perpendicularly down through the air onto this film, and in this light the film looks bright due to constructive interference. The thickness of the film is 298 nm and is the minimum nonzero thickness for which constructive interference can occur. What is the refractive index of the film?
A U-shaped tube, open to the air on both ends, contains mercury. Water is poured into the left arm until the water column is 17.7cm deep.
A grating is made of five similar, uniformly spaced, narrow slits. For light of wavelength ? = 675 nm perpendicularly incident on the slits, What is the angular position of the first principal order when the first and fifth slits are covered
A geostationary communications satellite orbits the earth directly above the equator at an altitude of 35,800 km. Calculate the time it takes for a signal to travel from a point on the equator to the satellite
A 3.00 kg block starts from rest at the top of a 33.0° incline and slides 2.00 m down the incline in 1.60s. Discover the acceleration of the block. Find the speed of the block after it has slid 2.00 m.
what will a spring scale read for the weight of a 58 kg woman in an elevator that moves as follows?a upward with
A person who weighs 684 N steps onto a spring scale in bathroom, and the spring compresses by 0.518 cm. (a) What is the spring constant? (b) What is the weight of another person who compresses spring by 0.328 cm.
An unknown number of moles of an ideal monoatomic gas expand reversibly from Vi = 2.30 m3 to Vf = 3.10 m3, at a constant pressure of 1.99 atm, Find the number of moles of gas
A uniform 4.50 kg square solid wooden gate 2.00 m on all side hangs vertically from a frictionless pivot at the center of its upper edge. A 1.00 kg raven flying horizontally at 4.50 m/s flies into this door at its center and bounces back at 2.00 m/s ..
The three charges in the figure below are at the vertices of an is osceles triangle. Let q = 1.00 nC and calculate the electric potential at the midpoint of the base.
A car of mass 1,600 kg is initially traveling at a speed of 20 m/s. Calculate the change in the kinetic energy of the car
Communications satellites are placed in a circular orbit where they stay directly over a fixed point on the equator as the earth rotates. What is the speed of a satellite in a geosynchronous orbit
A hot air balloon is descending straight down at a constant speed of 5.00 m/s. What is the velocity of the pellet and of the balloon
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