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A thin film of polystyrene is used as an antireflective coating for fabulite (known as the substrate). The index of refraction of the polystyrene is 1.49, and the index of refraction of the fabulite is 2.409. What is the minimum thickness of film required? Assume that the wavelength of the light in air is 520 nanometers.
What is the greatest amount through which the wavelength of an incident photon could change when it undergoes Compton scattering from an atom or molecule with a 19 u mass.
A dog running in an open field has components of velocity Vx = 3.3 m/s and Vy = -2.3 m/s at time t1 = 11.4 s. What is the direction of the dog's velocity
q1. black holes are suspected while a visible star is being noticeably pulled by an invisible partner that is more
An isolated copper sphere of radius 3.00cm, initially uncharged, is illuminated with ultraviolet light of wavelength 180nm. what charge does the photoelectric effect induce on the sphere
To focus a camera on objects at different distances, the converging lens is moved toward or awayfrom the film, so a sharp image always falls on the film.
A 1.6kg , 20-cm-diameter turntable rotates at 50rpm on frictionless bearings. What is the turntable's angular velocity, in rpm, just after this event
A satellite with a mass of 270 kg moves in a circular orbit 4.00 107 m above the Earth's surface. (a) What is the gravitational force on the satellite? . N (b) What is the speed of the satellite? . km/s (c) What is the period of the satellite?
josie and charlotte push a 12 kg bag of playground sand for a sandbox on a frictionless horizontal wet polyvinyl
A cross section of an infinite conducting sheet carrying a current per unit x-length of λ; the current emerges perpendicularly out of the page
a neon atom m 20.0 u makes a perfectly elastic collision with another atom at rest. after the impact the neon atom
A 2.0m length of metal wire is connected to a 1.5 V battery, and a current of 5.0mA flows through it. What is the diameter of the wire
What is the difference between mas and weight? On earth, what is the weight of a 1 kg mass, When your textbook says that the moon "falls around the earth,
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