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A rail gun accelerates a projectile from rest by using the magnetic force on a current-carrying wire. The wire has radius r = 5.6 10-4 m and is made of copper having a density of ? = 8960 kg/m3. The gun consists of rails of length L = 1.0 m in a constant magnetic field of magnitude B = 2.9 T, oriented perpendicular to the plane defined by the rails. The wire forms an electrical connection across the rails at one end of the rails. When triggered, a current of 1.10 104 A flows through the wire, which accelerates the wire along the rails. Calculate the final speed of the wire as it leaves the rails. (Neglect friction.)
X rays with intial wavelegnth 6.75*10^-2nm undergo compton scattering, At which scattering angle is this wavelength observed
question 1an infinitely long uniformly charged cylinder of radius r is shown.ausing symmetry arguments sketch the shape
He slides so that his speed is zero just as he reaches the base. Explain how much mechanical energy is lost due to friction acting on the runner? How far does he slide?
Suppose that a particle accelerator is used to move two beams of particles in opposite directions. what is the magnitude of the average current in this region
Two positive point charges are a fixed distance apart. The sum of their charges is QT. What charge should each have in order to (a) maximize an electric force between them, and (b) minimize it.
A positive charge Q1 = 3.00 µC is in the origin and a negative charge Q2 = -5.00 µC is at point x = 11m. Find the position of point P between the charges, where the electric potential equals zero.
A grocery cart is pushed along an aisle by a shopper who exerts a constant horizontal force of . The acceleration of gravity is . If all frictional forces are neglected and the cart starts from rest, illustrate what is the grocery cart’s final s..
Answers for an elevator are moving down with an acceleration of 3.360 m/s. what would be the apparent weight of a 64.20 kg man in the elevator.
A student strikes a long aluminum rod at one end. Another student, at the other end with her ear close to the rod, How long is the rod
A solid sphere of radius 40.0 cm has a total positive charge of 30.0 µC uniformly distributed throughout its volume. Calculate the magnitude of the electric field
A copper telephone wire has essentially no sag between poles 34.00 m apart on a winter day when the temperature is -20°C. How much longer is the wire on a summer day.
50 g of gasoline are mixed with 38 g of water. What is the average density of the mixture
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