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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 646 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 219 nm and is the minimum nonzero thickness for which constructive interference can occur. What is the refractive index of the film?
Three light bulbs each with a resistance of 50W, are connected in series to a 100 V power supply. What is the current flowing through the third light bulb.
a speeder passes a parked police car at a constant speed of 34.9 ms. at that instant the police car starts from rest
Suppose that a disk rotates through five revolutions in 4 seconds. What is the angular rotational velocity
The speed of a bicyclist that is riding in the direction of the wind is 7.6 km/h relative to the wind. what is the speed of the bicyclist
The outer surface of a skier's clothes of emissivity 0.700 is at a temperature of 7.40° C. Find the rate of radiation if the skier has a surface area of 1.50 m2
If the rms speed of the molecules of a quantity of helium at temperature 142 K is the same as the rms speed of neon atoms at a second temperature
A girl delivering newspapers covers her route by traveling 10.00 blocks west, 4.00 blocks north, and then 2.00 blocks east. What is the total distance she travels
A whale uses sonar (sound waves) to supplement its eyesight for deep water dives. The whale sends out a sound wave, which returns in 0.5 seconds. How far away is the object it bounced off
Explain the physics fundamental process that causes the scope ,rod, pith ball, etc to discharge when you touch it. what is conservative force according to the text book of Giancoli
The velocity of the electrons in the wires is very slow (few mm/s), but when one turnsonthe light, onedoesn't see any delay. Why?
If the skier is moving at 13 m/s at the bottom of the trail, calculate the total work done by friction and air resistance during the run
what is the ball's speed immediately after the collision?
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