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A .5 m length of rigid metal rod is connected through two springs ( with 10 N/m spring constants) perpendicular to the rod at either end, to a circuit that supplies 2.5 A of current through the wire. If the rod is perpendicular to a uniform 2 T magnetic field, find the distance each spring is stretched. What force is the origin of the work done to stretch the springs?
An object moves 2.27m in the +x-direction under the influence of a 141N force directed 41 degrees above the x-axis. Find the work done on the object
When a resistor is connected across the terminals of an ac generator (103 V) that has a fixed frequency, there is a current of 0.505 A in the resistor. find the impedance of the series combination
A playground merry-go-round has a disk-shaped platform that rotates with negligible friction about a vertical axis. determine how fast will the disk be turning
A 0.575 kg mass falls from a height of 3.95 m. If all of the energy of this mass could be converted to visible light of wavelength 5.29E-7 m
A horizontal block-spring system with the block on a frictionless surface has total mechanical energy E = 55.1 J, What is the kinetic energy of the system at the equilibrium point
A subway train starts from rest at a statrion and accelerates at a rate of 1.65m/s^2 for 14.2s. Find the total distance covered
A 20-N block lifted straight upward by a hand applying a force of 20N has an initial kinetic energy of 16J. What is the block's final kinetic energy
A jet airplane is in level flight. The mass of the airplane is m = 8830 kg. calculate At what angle is the airplane banked
A cannon fires a cannon ball at 610.37 m/s in a straight line that passes directly over an observer's head. how far is the cannon from the observer
A28.0-kg block is initially at rest on a horizontal surface. A horizontal force of76.0N is required to set the block in motion, after which a horizontal force of57.0N is required to keep the block moving with constant speed.
A 0.12 m3 rigid tank initially contains refrigerant R-134a at 1 MPa and 100% quality. find the mass of the refrigerant that has entered the tank
What is the speed of the arrow as it leaves the bow.Two point charges, Q_1 = -6.9 mu C and Q_2 = 2.0 mu C are located between 2 oppositely charged parallel plates.
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