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A monochromatic light source used in a diffraction experiment has a wavelength of 4.60 x 10-7 m. What is the energy of this photon of light?
An iPod is left running inside a thin insulating case 2.5mm thick with thermal condoctivity of 0.02WK^-1 m^-1 The case is black and at 25 degrees Celsius and exchanges energy with it's surroundings, all of which are at 20 degrees Celsius, by radia..
If the string is fixed at a length of 28 m we find a third harmonic standingwave.a)What is the tension in the string?b) How long would the string need to be to find the second harmonic standing wave?
A point charge Q = 5.20e-6 C is at the center of a conducting spherical shell of radius R = 25 centimeter. Find what is the field just outside the shell
a hammer strikes one end of a thick iron rail of length 8.5 m. a microphone located at the opposite end of the rail
What is the fluctuation in electron number in such a cube? What is the significance of localization of an electron by a wave packet in a thermal de Broglie cube?
Two astronauts are at rest in outer space, one 12.1 m from the Space Shuttle and the other 24.2 m from the Shuttle. Using a 151.0-W laser, how long will it take her to reach the Space Shuttle
A point source of light is 235.0 cm below the surface of a body of water. Discover the diameter of the circle at the surface during which light emerges from the water.
A conducting sphere that carries a total charge of -8.8 µC is placed at the center of a conducting spherical shell that carries a total charge of +2.8 µC. The conductors are in electrostatic equilibrium. Decide the charge on the outer surface of the ..
A 85-kg person sits on a 3.7-kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.4 cm in diameter
Kikyo shot an arrow in the vertical direction at the initial velocity was v0 = 68.6 m/s. How high can the arrow reach vertically
A student sitting on a frictionless rotating stool has rotational inertia 0.95 about a vertical axis through her center of mass when her arms are tight to her chest. what's her new rotational velocity
if electrical energy costs 12 cents or 0.12 per kilowatt-hour then what would the following events cost?a burning a 120
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