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A circular loop of wire with areal A lies in the xy-plane. As viewed along the z-axis looking in the -z direction toward the origin, a current I is circulating clockwise around the loop. The torque produced by an external magnetic field B is given by r=D(3i^-2j^), where D is a positive constant, and for this orientation of the loop the magnetic potential energy U= -u*B is negative. The magnitude of the magnetic field is B0=15 D/IA.
1) Determine the vector magnet moment of the current loop.
2) Determine the component Bz of B vector.
A box stands against the wall of a cylinder that is rotating. The cylinder has a radius of 30cm. What is the minimum consant speed (magnitude of linear velocity) the box must move so it doesn't slip
A vertical tube open at the top contains 5.2 cm of oil (density 0.82 g/cm^3) floating on 5.2 cm of water. Find out the gauge pressure at the bottom of the tube.
A plastic ball in a liquid is acted upon by its weight and by a buoyant force. The weight of the ball is 4.8N. The buoyant force has a magnitude of 6.5N and acts vertically upward. External force acting on the ball maintains it in the state of res..
A person walks first at a constant speed of 4.80 m/s along a straight line from point a to point b and then back along the line from b to a at a constant speed of 3.30 m/s. What is her average speed over the entire trip?
A 1x10^2-kg crate is being pushed across a horizontal floor by a force that makes an angle of 30.0° below the horizontal. The coefficient of kinetic friction is 0.25. What must be the magnitude of, so that the net work completed by it and the kine..
Estimate the value of resistances needed to make a variable timer for intermittent windshield wipers: one wipe every 15?s, 8?s, 4?s, 2?s, 1?s, Estimate the mininum value of the resistance
Lonnie pitches a baseball of mass .20 kg. The ball arrives at home plate with a speed of 40 m/s and is batted straight back to Lonnie with a return speed of 60-m/s. If the bat is in contact with the ball for .050 s, what is the impulse experienced..
A charge of +45.9 C is at the origin. When charge Q is placed at 2 m along the positive x axis, What is the value of Q
What are the final temperatures of water and the aluminum.
Compute direction of the plane's velocity, relative to the ground. Compute how far from its intended position it will be after 15.0 if the pilot takes no corrective action.
A ball rolls horizontally with a speed of 8.1m/s off the edge of a tall platform.If the ball lands 6.1m from the point on the ground directly below the edge of the platform
A charge 2q is located at the origin. A charge -3q is located at x = d, y = 0, z = 0. Where is the electric field zero
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