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Question: In x-ray machines electrons are accelerated through 100kV or more. What is the speed of a 100keV electron? What is its momentum? How much error do you make in your answers if you use the Newtonian equations instead of the relativistically correct ones?
Monochromatic coherent light shines through a pair of slits. If the distance between these slits is decreased, which of the following statements are true of the resulting interference pattern? (There could be more than one correct choice.)
Alpha Centauri is 4.3 light years away. If we could make a rocket that went 4/5 the speed of light: What would the travel time be for the astronauts
A thick spherical shell of charge Q and uniform volume charge density ? is bounded by radii r1 and r2, where r2 > r1. With V = 0 at infinity, find the electric potential V as a function of the distance r from the center of the distribution, consid..
A box is pushed a distance d along a ramp at a constant speed by a horizontal force, Fa. how much work is done by the horizontal force
DATA: A = 2, B = 6, C = 5, D = 6, E = 2. Consider the charge at the center of the square. What is the x-component of the net force on this charge?
A 150 kg block is pulled at a constant speed of 3.2 m/s across a horizontal floor by an applied force of 126 N directed 22° above the horizontal. What is the rate at which the force does work on the block
The men's world record for the shot put, 23.12m, was set by Randy Barnes of the United States on May 20, 1990. If the shot was launched from 6 f above the ground at an initial angle of 42 degrees, what was its initial speed.
Determine the concentration of naphthalene in the air as it leaves the arrangement, evaluating the mass-transfer coefficient using the Reynolds analogy;
An electron close to a large, flat sheet of charge is repelled from the sheet with a 1.5pN force. Find the surface charge density on the sheet
Consider a pure, crystalline solid being heated from absolute zero to some very high temperature. Which one of the following processes produces the greatest increase in the entropy of the substance?
Jonathan is riding a bicycle and encounters a hill of height h. What is the total external work done on the system of Jonathan and the bicycle between the time he starts up the hill and the time he reaches the top
Two coherent sources are a distance 300 mm and 280 mm away from a point. What are the two longest wavelengths that will produce constructive interference
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