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A hockey puck on a frozen pond is given an initial speed of 20 m/s. If the puck forever remains on the ice and slides 115 m before coming to rest, decide the coefficient of kinetic friction between the ice and puck.
he diffraction pattern is viewed on a screen 55.5 cm from the slit. The distance on the screen between the third order minimum and the central maximum is 1.91 cm. What is the width of the slit
A capacitor of 652. microfarad is charged to 21. volts. Find the stored charge in the capacitor in coulombs
A small but measurable current of 1.2*10^-10 A exists in a copper wire whose diameter is 2.5mm compute the current density and the electron drift speed.
Your roommate is working on his bicycle and has the bike upside down. He spins the 54.0cm -diameter wheel, What is the pebbles speed and acceleration
Assume this asteroid has the shape of a sphere. A rock sitting on the surface of the asteroid has a weight of 100 Newtons. How is the mass of the rock affected by its change in position
A velocity selector has a magnetic field of magnitude 0.32 T perpendicular to an electric field of magnitude of 0.34 MV/m. The mass of the electron is 9.11x10-31 kg. How much energy must electrons have in order to pass through undeflected
If a parallel mirror He-Ne laser had a homogeneous line shape with v=1.5GHz, and small signal peak coefficient of .001/cm length=100cm and reflectance's 100 percent and 97 percent, how many longitudinal modes would initially contribute to the laser o..
You throw a glob of putty straight up toward the ceiling, which is 3.00m above the point where the putty leaves your hand. What is the speed of the putty just before it strikes the ceiling
q1. a thin horizontal copper rod is 1.59347 m long and has a mass of 33.2472 g.the acceleration of gravity is 9.8
a proton moves at 4.40 x 105 ms in the horizontal direction. it enters a uniform vertical electric field with a
A string of 22 identical Christmas tree lights are connected in series to a 125 V source. The string dissipates 52 W. What is the comparable resistance of the light string.
Two boxes with different masses M1 = 0.7 kg and M2 = 2.3 kg are tied together on a frictionless ramp surface, What is the tension in the rope connecting the two boxes
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