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A horizontal tube with length L has two positive charges +Q1 and +Q2 on the edges. A small ball can move without friction inside the tube (see figure). This small ball has a charge +Q and the same diameter as the tube. Find the static equilibrium position for the small ball. (sigma F = 0). Hint: Ignore the gravity. Express the result as a function of Q1, Q2 and L.
In a jump spike, a volleyball player slams the ball from overhead and toward the opposite floor. Controlling the angle of the spike is difficult. Suppose a ball is spiked from a height of 2.30 m with an initial speed of 18.0 m/s at a downward angl..
When you weigh yourself on good old terra firma (solid ground), your weight is 144 lb . In an elevator your apparent weight is 124 lb.What is the magnitude of the elevator's acceleration? What is the direction of the elevators acceleration?
A 528 Hz sound wave travels through a substance. What is the speed of sound in the substance
A long solenoid that has 1,140 turns uniformly distributed over a length of 0.445 m produces a magnetic field of magnitude 1.00 10-4 T at its center. What current is required in the windings for that to occur
Use the Fourier series method to evaluate the deviation of the bone subjected to the load, w, which is linearly dependent on its position
An LC circuit consists of a 20 mh inductor and a 0.5 if capacitor.maximum instantaneous current is 0.1 A
A circular loop of radius r = 4, is located in the xy plane, centered at the origin. Find the net flux leaving a closed sphere of radius r = 2, centered at the point (4, 0, 0)
A railroad car of mass 2.58 104 kg is moving with a speed of 3.88 m/s. It collides and couples with three other coupled railroad cars, What is the speed of the four cars after the collision
an electromagnetic wave strikes a 2.60 cm2 section of wall perpendicularly. the rms value of the waves magnetic field
How does the study of heat relate to the kinetic theory of matter?
A transformer is to be used to give power for a computer disk drive that needs 6.0V (rms) instead of the 120 V (rms) from the wall outlet. The number of turns in the primary is 400. Discover the number of turns in the secondary?
Two rockets, A and B, approach the earth from opposite directions at speed 0.60c. What is the length of rocket A as measured by the crew of rocket B
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