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Two point charges are located on the x-axis. One has a charge of 1.15 μC and is located at x = 0.0 m, and the other has a charge of -4.07 μC and is located at x = 11.7 m. At what location on the x-axis (other than at infinity) would the electric force on a third point charge of 3.32 μC be zero?
Assume that the interior of the earth can be treated as an incompressible fluid in equilibrium. {HINT: Let ? denote the density; take ? to be a constant; ? = M/V.}
A 2.0 kg box of running shoes slides on a horizontal frictionless table and collides with a 1.0 kg box of ballet slippers initially at rest on the edge of the table, at height h = 0.41 m. find their kinetic energy just before they strike the floor
A sign has a mass of 1050 kg, a height h = 1 m and a width W = 4 m. It is held by a light rod of length 5 m that is perpendicular to a rough wall. A guy wire at 23° to the horizontal holds the sign to the wall.
A pilot claims to have seen a UFO moving initially at a speed of about 374 m/s in an easterly direction and then, Compute the UFO's average acceleration during the turn
A 94-kg fullback is running at 3.7m/s to the east and is stopped in 0.85 s by a head-on tackle by a tackler running due west. Calculate the original momentum of the fullback
Calculate the magnetic fields due to the displacement current midway between the plates at a radius equal to half the plate radius
Consider an oil film (n = 1.50) on water (n = 1.33) and 600nm incident light. Find the minimum film thickness for constructive interference
A 12.0 kilogram shell is launched at an angle of 55o above the horizon with an initial velocity of 150 m/s. compute how much energy was released by the explosion
A freight car with a mass of 2500 kg rolls down an inclinedtrack through a vertical distance of 1.5m. at the bottom of theincline, on a level track, the car collides and couples with anidentical freight car that was at rest. What percentage of the in..
Find the magnitude and direction of the electric field produced by a red blood cell at the following locations. Assume that red blood cells can be modeled as spheres of 6.54 um diameter with -2.55*10^-12 C excess charge uniformly distributed over ..
An automobile starter motor has an equivalent resistance of 0.0470 and is supplied by a 12.0 V battery with a 0.0120 internal resistance. What is the current to the motor
An intern pushes a 72 kg patient on a 15 kg gurney, producing an acceleration of 0.60 m/s2. How much work does the intern do by pushing the patient and gurney through a distance of 2.5 m
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