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A copper wire wrapped into a coil is hooked to a 3.00V battery and a switch. At t=0 the switch S is closed. At t=20 seconds the current in the circuit is 24mA. After a long time the current in the circuit is 50mA. a. Find the resistance of the coil. b. Find the inductance of the coil. c. Find the energy stored in the coil when the current is maximum.
A hydrogen atom undergoes a transition from a 2p state to the 1s ground state. In the absence of a magnetic field, the energy of the photon emitted is 122nm. The atom is then placed in a strong magnetic field in the z-direction.
The path of a charged particle moving parallel to a uniform magnetic field will be:
A 200 kg object and a 500 kg object are separated by 1.2 m. A 150 kg object is placed half way between the two objects, What is the gravitational potential energy of the three masses
A uniformly charged sphere has a potential on its surface of 460 V. At a radial distance of 24 cm from this surface, the potential is 190 V. What is the radius of the sphere
The change in the kinetic energy of the system
A 2.00kg projectile is launched from the earth's surface with an initial velocity of 38.0 m/s at an angle of 45 degrees with respect to the horizon. What is the work done by gravity on the projectile
A cylinder rolls down a ramp of height h = 1.1 m with ? = 36°, starting from rest at the top. How long does it take to reach the bottom of the ramp
When you take your 1200 kg car out for a spin, you go around a corner of radius 57.7 m with a speed of 15.7 m/s. The coefficient of static friction between the car and the road is 0.80. Assuming your car doesn't skid, what is the force exerted on it ..
A kaon is moving in the +x direction decays by this process, where that pi^+ is moving off at a speed of 0.9c in the +x-direction, determine the speed of the kaon before the decay
Misako is about to do a push-up. Her center of gravity lies directly above a point P on the floor, what is the force exerted by the floor on her hands
A baskerball player makes a jump shot. The 0.600 kg ball is released at a height of 2.0 m above the floor with a speed of 7.20 m/s. What is the work done on the ball by air resistance
A diver completes somersaults during a 2.1 sec dive. What was the diver's average angular speed during the dive
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