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A resistor is constructed of a carbon rod. When a potential difference of 15V is applied across the ends of the rod, a current of 4x10-3 A passes through the rod. Find the resistance of the rod.
A Charge of Q=700nC is uniformly distributed throughout a circular disk of radius R =10 cm, What are the magnitued and direction of the electric and magnetic field at the center of the rotating charge
a stationary particle of charge q 2.8 times 10-8 c is placed in a laser beam an electromagnetic wave whose intensity
A transformer is made by winding a primary coil of 250 turns around an iron core. A secondary winding of 50 turns is made around the same core. If the primary voltage is 240 V, what is output voltage on the secondary?
You are designing the section of a roller coaster ride shown in the figure. Previous sections of the ride give the train a speed of 14.3 m/s at the top of the incline, which is 36.7 m above the ground. obtain the minimum radius you can use for the ..
A uniform magnetic field of magnitude 1.43 T is in the positive z direction. Find the force exerted by the field on a proton for the following proton velocities.= 4.6 x 106 m/s + 3.3 x 106 m/s
Spherical mirror has a focal length of 10 cm. find location and then describe image for an object distance of 25 cm. How fast does the image of the object move
You are on the Turkish Twist, an amusement park ride with your back against the wall of a spinning vertical cylinder of radius 4.0 m, What is the minimum number of revolutions per minute necessary to prevent you from sliding down the wall
In the Millikan oil-drop experiment, Estimate the radius of an oil drop of density 839 kg/m3 for whichits weight could be balanced by the electric force of this field on one electron
A television set connected to a 120 outlet consumes 73 of power. How much current flows through the television
What is the coefficient of kinetic friction? This same block is now placed on an inclined plane, and the angle of the plane is increased until the block just begins to slip. This angle is measured to be 30 degree.
Bronco Brown is mowing his lawn. He applies a force F along the handle of the lawnmower as shown. Bronco moves the mower at constant velocity.
Two astronauts, each having a mass M, are connected by a rope of length d having negligible mass. They are isolated in space, orbiting their center of mass at speeds v. What is the new rotational energy of the system
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