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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 554 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 278 nm and is the minimum nonzero thickness for which constructive interference can occur. What is the refractive index of the film?
A 5.080 kg block of wood rests on a steel desk, State the force of friction applied to the block by the table at the following times: t=0 and t>0
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis. What is the radius of the chamber
Consider a pair of charged parallel plates, each having an area of 5cm^2. what is the magnitude of the electric field in the space
Niobium metal becomes a superconductor when cooled below 9 K. determine the maximum current a 1.95-mm-diameter niobium wire can carry and remain superconducting
A 0.14-kg balloon is filled with helium (density = 0.179 kg/m3). If the balloon is a sphere with a radius of 5.3 m, what is the maximum weight it can lift
A 60 power telescope has an eyepiece with a focal length of 10 cm. find the objective focal length
Explain how long is the bullet in the target? What average force does the bullet exert on the target? What is the target's speed just after the bullet emerges?
A 2100 kg car traveling to the right at 32m/s is chasing a second car of the same mass that is traveling to the right at 10m/s.
Two objects are connected by a light string that passes over a frictionless pulley, Find the magnitude of the accelerations of the objects
A long string with a mass/length of 500 g/m is placed under a tension of 400 N, What is the wavelength of the resulting wave and What is the wave speed
each second 5e23 nitrogen molecules (m=4.65e23 g) collide with a 10cm2 wall assume that the molecules all travel with a common speed of 290m/s, What is the pressure on the wall
A blob of iron sinks form the surface of earth to the center. Assume the blob does not transfer any energy to its surroundings. Assume the density of earth is uniform.
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