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On a circular path of radius 12 cm in air around a solenoid with increasing magnetic field, the emf is 26 volts. A wire with resistance 3 ohms is placed along the path. What is the current in the wire?
A ball swings in a vertical circle at the end of a rope1.40 m long. When the ball is36.3° past the lowest point on itsway up, its total acceleration is (-22.5 i + 20.2j) m/s2. Determine the magnitude of its radial acceleration.
Find out an effective coefficient of kinetic friction
question a 450-loop circular armature coil with a diameter of 8.0 cm rotates at in a uniform magnetic field of strength
The figure below shows a thin, uniform bar of length D =1.11 m and mass M =0.82 kg pivoted at the top. The rod, which is originally at rest, is struck by a particle whose mass is m = 0.30 kg at a point x = 0.80d below the pivot.
A tiny sphere with a charge of q = +6.4 µC is attached to a spring. Two other tiny charged spheres, each with a charge of ?4.0-µC, are placed in the positions shown in the figure, in which b = 4.1 cm.
An x-ray photon of 0.13 nm strikes a metal and undergoes Compton scattering of the electrons in the metal. find the wavelength of the scattered photon
A block of ice at 0°C whose mass initially is m = 48.4 kg slides along a horizontal surface, starting at a speed vo = 4.91 m/s, Compute the mass of ice melted as a result of the friction between the block and the surface
A scuba diver is 40 m below the surface of a lake, where thetemperature is 5 degrees C. He releases an air bubble with avolume of 15 cm^3. What is the volume of the bubbleright
question1a 93 kg lumberjack stands at one end of a 379 kg floating log. both the log and the lumberjack are at rest
Four point charges of magnitude 3.1 µC are at the corners of a square of side 5 m. Find the electrostatic potential energy if all the charges are negative.
A -10.0 nC point charge and a +20.0 nC point charge are 15.0 cm apart on the x-axis. What is the direction of the electric field at the point on the x-axis, between the charges, where the electric potential is zero
Two skaters, one with mass 65 kg and the other with mass 60 kg, stand on an ice rink holding a pole of length 10 m and negligible mass. How far does the 60 kg skater move
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