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Potential energy in a two-dimensional crystal **
Use a computer to calculate numerically the potential energy, per ion, for an infinite two-dimensional square ionic crystal with sepa- ration a; that is, a plane of equally spaced charges of magnitude e and alternating sign (as with a checkerboard).
a total of 8.57middot106 electrons are placed on an initially uncharged wire of length 3.27 m. what is the magnitude of
The current in an electro magnet connected to a 240 V line is 14.5A.At what rate must cooling water pass over the coils if the water temperature is to raise by no more than 7.50C ?
Two isolated metal balls are charged with +4.3 x 10-6 C and -7.5 x 10-6 C. Find the number of excess electrons on each ball after they touch each other and then brought apart
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A rifle is aimed horizontally at a target 58 away. The bullet hits the target 2.5 below the aim point. What was the bullet's flight time? What was the bullet's speed as it left the barrel?
A 3.86-kHz tone is being produced by a speaker with a diameterof 0.239 m. The air temperature changes from 0 to 28.4oC. Assuming air to be an ideal gas, find the change in the diffraction angle
The inlet ducting to a jet engine forms a diffuser that steadily decelerates the entering air to zero velocity relative to the engine before the air enters the compressor. determine the temperature, in degrees Celsius, of the air entering the compr..
The 40 kg wheel of an airplane flying at 248 m/s at an altitude of 7400 m falls off during a flight. If the wheel hits the ground at 377 m/s, how much work was done on the wheel by air resistance
A charge of +45.9 C is at the origin. When charge Q is placed at 2 m along the positive x axis, What is the value of Q
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