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A proton moving at 5 x 10^4 m/s horizontally ( + x direction) enters a region where a magnetic field of .12 T is present directed in -y direction ( vertically downward ) what is the magnitude force acts on the proton?
A sinusoidal voltage ?v = (85 V) sin (200t) is applied to a series RLC circuit with L = 40 mH, C = 145 ?F, and R = 30 ?. What is the impedance of the circuit
two gliders a and b with mass 0.50 kg and 0.30 kg respectively move toward each other at 2.0 ms on frictionless linear
A skier of mass 79 kg is pulled up a slope by a motor-driven cable. What power must a motor have to perform this task
A model airplane of mass 0.870 kg is flying at constant speed in a horizontal circle at one end of a 28.0 m cord and at a height of 17.0 m. What is the acceleration of the plane
A solenoid is used as a rotor of an electrical motor. It is 10 cm long and 2 cm in diameter. The wire wrapped around it makes 1000 turns and has a resistance of 100 Ohms. find the electrical power delivered by the battery
A 4.7- kg box of books is pulled up a 4.16- m-long inclined plank to a height of 1.8 m. What percent of the work is lost to friction
An ?-particle has a charge of +2e and a mass of 6.64 × 10-27 kg. find the magnitude of the magnetic force on it
A hydraulic jack is made with a small piston 1.4 cm in diameter that is used to move a large piston 5.8 cm in diameter. how heavy a load can he lift with the jack
An ideal gas has a pressure of 2.0 atm and temperature 27 degrees celcius. what is the volume of this gas
The mass of nitrogen molecule, N2, is 4x10^26 kg. What is its root mean square (rms) speed at 40 degrees Celsius
A uniform thin rod of mass 4.19 kg pivots about an axis through its center and perpendicular to its length. What must the length of the rod be so that the moment of inertia of the three-body system with respect to the described axis is 0.977 kg·m2
A farsighted person uses glasses with a refractive power of 3.6 diopters. What is this person's near point when not wearing glasses
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