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A falling metallic ring enters a region with constant and uniform magnetic field (B=5T). 1. If it takes one second to fall from rest from height h, what is the magnitude of the magnetic force acting on an electron in the ring as the ring crosses the boundary? 2. what is the direction of this force?
A home run is hit in such a way that the baseball just clears a wall 14.0 m high, located 118 m from home plate. Find the time it takes the ball to reach the wall
A paperweight, when weighed in air, has a weight of W = 16.1 N. When completely immersed in water, Find the volume of the paperweight
1. A modern-day zeppelin holds 8,280 m3 of helium, Compute its maximum payload at sea level
A lawn mower is pushed at constant speed by a horizontl force of 10.0 lbs. determine the work done by the person
A thin uniform rod (length = 1.09 m, mass = 3.09 kg) is pivoted about a horizontal frictionless pin through one of its ends. What is the angular acceleration of the rod at the instant it is released
A 1,216-kg car drives through a turn with radius 42 m. The coefficient of static friction is 0.9 and the coefficient of kinetic friction is 0.52. find the maximum speed (constant) at which the car can negotiate the turn
A closely wound coil has a radius of 6.30 cm and carries a current of 1.70 A. How many turns must it have if, at a point on the coil axis 6.30 cm from the center of the coil, the magnetic field is 7.00 10-4 T?
A 10.0-kg mass is located at the (1.00 m)i + (2.00 m)j + (2.00 m)k. A 5.00-kg mass is located at (-1.00 m)i + (1.00 m)j + (1.00 m)k. Determine the moment of inertia of this system about an axis through the origin parallel to the x-axis
A proton initially has a v = 4.0i-2.0j+3.0k and then 4 sec later has a v (Vector) = -2.0i - 2.0j+5.0 k (in m/s). For that 4.0 second, Determine the protons average acceleration
The current in an electron beam in a cathode-ray tube is measured to be 70 uA. How many electrons hit the screen in 5.0s
Te orbit of an asteroid extends from Earths to Jupiter's, just touching both. Find the maximum and minimum orbital speeds of the asteroid
A piece of glass has a temperature of 73.0 °C. Liquid that has a temperature of 37.0 °C is poured over the glass, determine the specific heat capacity of the liquid
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