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A film of oil with index of refraction no = 1.5 lies on top of a slab of flint glass, nf = 1.66. The wavelengths of visible light with the brightest reflections from the oil are lambda = 550 nm and lambda = 440 nm. (These are the wavelengths in air.) Based on this information only, what is the smallest possible thickness of the film?
An engine removes 300 J from a reservoir at 290 K and exhausts 250 J to a reservoir at 200 K. What is its efficiency? How much more work could be done if the engine were reversible?
Imagine that in another universe the speed of the light is only 100 m/s. A person travelling along an interstate highway at 120 km/h ages how much slower than a person at rest?
A 940 kilogram rock is whirled around in a horizontal circle at the end of a 1.3 meter long string. find what is the maximum allowable speed of the rock
A rotating wheel requires 6.00 s to rotate 26.0 revolutions. What is the constant angular acceleration (in rad/s) of the wheel
If a bus you are riding is traveling at a constant speed and then stops abruptly, you feel "thrown” forward. Which of the following is true at the instant the bus begins to stop? Suppose the seat is frictionless and that you are not wearing a seatbel..
A basketball player makes a jump shot. The 0.600-kg ball is released at a height of 2.15 m above the floor with a speed of 7.40 m/s. What is the work done on the ball by air resistance
A small but measurable current of 8.4 x 10-10 A exists in a copper wire whose diameter is 2.9 mm. calculate the current density and electron drift speed
What is the ratio of the new kinetic energy to the original kinetic energy of a moving car when the ratio of the new speed to the original speed is 1/7
how does knowing the time constant of an rl or rc circuit help us decide the width of a practical pulse input that is
A water tower supplies water through the plumbing in a house. A 2.54-cm-diameter faucet in the house can fill a cylindrical container with a diameter of 62 cm and a height of 36 cm in 12 s. How high above the faucet is the top of the water in the ..
A soap film formed in a loop of wire is, because of its weight, not exactly uniform in thickness, but wedge-shaped in cross section. When the film is illuminated with 546 nm light, one sees four interference fringes spread over a distance of 2.0 c..
Oxygen gas having a volume of 1070 cm3 at 35.0°C and 1.01 x 105 Pa expands until its volume is 1650 cm3 and its pressure is 1.06 x 105 Pa. Find the number of moles of oxygen present
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