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A gravitron ride at a fair consists of a large cylinder of radius15.0m, spinning about its vertical axis of symmetry. The rider isheld to the inner cylinder wall by static friction as the bottom ofthe cylinder is lowered. If the coefficient of static frictionbetween the wall and rider is 0.8, then how many revolutions per minute must the cylinder execute?
A 600X microscope uses a 0.35 cm focal lengthobjective lens. if the tube length is 16.0 cm, what is the focal length of the eyepiece
Two wires A and B made of the same material and having the same lengths are connected across the same voltage source. what is the ratio of their diameters
A three-phase synchronous generator is connected to a step-up transformer T1, which is connected to a 60km long transmission line. As the far end of the line, a step-down transformer bank T2 is connected. The secondary of T2 supplies two loads L..
A metal ball with a mass of 3.81·10-6kg and a charge of +5.21 mC has a kinetic energy of 4.77·108J. how close will it come to the plane before stopping
A golf ball of mass 0.045 kg is hit off the tee at a speed of 35m/s . The golf club was in contact with the ball for 3.90×10?3s. Find the impulse imparted to the golf ball
an 82 kg man lowers himself to the ground from a height of 6.6 m by holding onto a rope that runs over a frictionless
you find an unlabeled box of fine needles and want to determine how thick they are. a standard ruler wont do the job
a horizontal rifle is fired at a bulls-eye. the muzzle speed of the bullet is 670 ms. the gun is pointed directly at
A very long, straight wire carries a current of 0.180 A. This wire is tangent to a single-turn, circular wire loop that also carries a current. The directions of the currents are such that the net magnetic field at the center of the loop is zero.
Use Ampere's Law to find the magnetic field due to an infinitely long wire of radius R carrying a current I. Find the magnetic field both inside and outside the wire
A 2.2 mlong glass tube that is closed at one end is weighted and loweredto the bottom of a freshwater lake. Determine the depth of the lake
Standing on the surface of a small spherical moon whose radius is 5.71·104 m and whose mass is 6.71·1018 kg, an astronaut throws a rock of mass 1.85 kg straight upward with an initial speed of 28.5 m/s.
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