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Perhaps it has occurred to you that we could tap Earth's magnetic field as a source of electrical potential from which we could then generate energy. One way to do this would be to spin a metal loop about an axis perpendicular to Earth's magnetic field. Suppose that the metal loop is a square that is 45.0 cm on each side and that we want to generate a potential in the loop of amplitude 125 V at a place where Earth's magnetic field is 0.50 x 10-4 T. At what angular speed (in rev/s) would we have to spin the coil?
A subway train starts from rest at a station and accelerates at a rate of 1.53m/s2 for 13.9s. Find the total distance covered
What is the physical meaning of the y-intercept?
An insulated vertical piston cylinder device initialy contains 10kg of water, 6 kg of which is in the vapor phase. Determine the mass of steam that has entered
A proton is accelerated through apotential difference of 1,000 V. After leaving the region of the electric field, the proton enters a magnetic field and is observedto be on a curved path of radius 5.0 cm. Assuming the magneticfield is perpendicula..
The answer to a problem is the difference between two calculated numbers: 1.13730669 and 1.13729483. What is the percent accuracy that the calculated
A man and a boy carry a canoe 5.80 m long and weighing 371 N. The canoe is held overhead in a horizontal position. How far from the opposite end should the man stand
A car starts from rest and moves along a straight line with an acceleration of a = (3s -1/3) m/s2, where s is in meters. Resolve the car's velocity and position when t = 10 s.
An electron of mass 9.1 * 10^-31 kg is moving in the xy-plane; its speed is 2.0 * 10^5 m/s, What are the components of the momentum of the electron
Down the plane is the positive direction and up the plane is the negative direction. Find the magnitude of the acceleration of the block
A uniform solid disk of mass 2.97 kg and radius 0.200 m rotates about a fixed axis perpendicular to its face. If the angular frequency of rotation is 5.97 rad/s, evaluate the angular momentum of the disk when the axis of rotation passes during its c..
A 0.3 kg apple falls from rest through a height of 40 cm onto a flat surface. Upon impact, the apple comes to rest in 0.1 s, What is the average pressure exerted on the apple
A loop of diameter 21 cm is placed in a uniform electric field of magnitude 7.4 102 N/C. What is the electric flux through the loop when the electric field is perpendicular to the plane of the loop
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