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Two steel juggling balls each carry a charge of 2.75 μC. There is a repulsive force between them of 1.25 Newton. Find the distance between the centers of the two balls?
If you were standing on a spinning turntable holding barbells close to your chest, how would your spin be affected? Why?
A girl and her bicycle have a total mass of 35 kg. At the topof a hill her speed is 5 m/s. what is her speed at the bottom
You can ignore friction between the sled and surface of the pond. Use the work-energy theorem to find the speed of the sled at 3.00 m.
a metal hump is placed on the surface of the infinitely large conducting plate as shown on the picture. the hump has a
The dipole moment of a water molecule in liquid water is 6.2×10−30 C·m, and the effective diameter of a water molecule is 2.8×10−10 m. In an earlier homework problem the effective dipole charge separation for water was calculated as 1.9×10−11 m.
A stone is projected at a cliff of height h with initial velocity of 42 m/s directed 60 degrees above the horizon. The stone strikes the cliff at point A, 5.50 s after launching.
question a wire has a current density of 17 amm2. if the drift velocity is 4.8times10-8 ms how many free electrons does
The pilot of an airplane executes a constant-speed loop-the-loop maneuver in a vertical circle, What is his apparent weight at the highest point of the circle
A 100kg hollow sphere is neutrally buoyant and completely underwater. It's volume is 0.5 cubic meters. If this 0.5 cubic meter space is filled with a combination of helium and water, what fraction of this volume is helium?
One side of the roof of a building slopes up at 43.0°. A roofer kicks a round, flat rock that has been thrown onto the roof by a neighborhood child. Determine the maximum height the rock reaches above the point where it was kicked
On a frictionless, horizontal air table, puck A (with mass 0.250 kilogram) is moving toward puck B (with mass 0.350 kilogram), which is initially at rest. Determine the change in the total kinetic energy of the system that occurs during the collisi..
A 150-N sphere 0.20 meter in radius rolls without slipping 6.0 meter down a ramp that is inclined at 34 degree with the horizontal. Find the angular speed of the sphere at bottom of slope
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