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A monoenergetic beam of electrons is incident on a single slit of width 0.500 nanometer. A diffraction pattern is formed on a screen 20.0 centimeter from the slit. If the distance between successive minima of the diffraction pattern is 2.10 centimeter, determine the energy of the incident electrons?
A slide projector needs to create a 99.0 -high image of a 2.00 -tall slide. The screen is 290 from the slide. What focal length does the lens need? Assume that it is a thin lens.
A small drop of water is suspended motionless in air by a uniform electric field that is directed upward and has a magnitude of 10200 N/C. How many excess electrons or protons reside on the drop
Three separated weights (400 N, 294 N, and 98 N) on a frictionless, horizontal table, are all connected by a wire that passes through every weight, Determine the acceleration of the four weights
You're burning calories by weight lifting. You lift a 65kg barbell and 1.8m and repeat 15 times. How much energy in Cal do you expend
A boy shoves his stuffed toy zebra down a frictionless chute, starting at a height of 1.67 m above the bottom of the chute and with an initial speed of 1.97 m/s
Two narrow slits are .025 mm apart. When a laser (λ = 633nm) shines on them, bright fringes form on a screen that is a meter away. These fringes are 3.0cm apart. What is the separation among the second order the central fringe and bright fringe?
A particle whose mass is 2 kg moves in the xy plane with a constant speed of 3 m/s in the x direction along the line y = 5. What is its angular momentum (in kg×m2/s) relative to the origin
The maximum wavelength that an electromagnetic wave can have and still eject electrons from a metal surface is 469 nm. What is the work function W0 of this metal? Express your answer in electron volts.
A 0.450-kg block of wood hangs from the ceiling by a string, and a 7.30×10?2-kg wad of putty is thrown straight upward, How high does the putty-block system rise above the original position of the block
Water flowing through a garden hose of diameter 2.72 cm fills a 22.0-L bucket in 1.60 min. What is the speed of the water leaving the end of the hose
At its Ames Research Center, NASA uses its large "20-G" centrifuge to test the effects of very large accelerations ("hyper gravity") on test pilots and astronauts. In this device, an arm 8.84 {rm m} long rotates about one end in a horizontal plane..
A 118 kg fullback runs at the line of scrimmage. How fast was he running initially
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