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In a hydrogen atom, the electron jumps from the n=1 to the n=4 level. During the transition from n=1 to n=4, is a photon emitted or absorbed and what is the change in energy of the electron?
The first part asked for voltage across the capacitor at t=0.011s which is -11V. What is the capacitive reactance? Xc=1/(2pi*f*c) but what is f? Is this the right approach?
Write the equations of motion for the system shown in Figure, and determine its natural frequencies and mode shapes.
Two dogs fight over a bone. The larger of the two pulls on the bone to the right with a force of 42 Newton. The smaller one pulls to the left with a force of 35 Newton. Find the net force acting on the bone
Potential inside nonconducting sphere (08c24p11) A nonconducting sphere has a radius R=10 cm and uniformly distributed charge q=5.5e-12 C. Take the electric potential at the sphere's center to be zero. What is V at radial distance r=1.5 cm?
A converging lens with a focal length of 7.00cm forms an image of a 3.80mm -tall real object that is to the left of the lens. Where are the object and image located
A 2 kg ball moving towards the West with a speed of 10m/s collides with a 4 kg ball moving towards the North with a speed of 3m/s. Find the velocity of the combination after collision
Unpolarized light passes through two Polaroid sheets. The transmission axis of the analyzer makes an angle of 40.1° with the axis of the polarizer. What fraction of the original light is absorbed by the analyzer
What is the average power consumed by the circuit?
The speaker coil consists of 100 turns of wire, 2cm in diameter. The current in the speaker will be 1.6 A when the force on the speaker coil is 14.8 N. What strength magnetic field will give this force.
A +50oC point charge is placed 52cm from an identical +50oC charge. How much work would be required for an external force.
Suppose that a fission neutron, emitted with an energy of 2 Me V, slows down to an energy of 1 eV as the result of successive collisions in a moderator. How many collisions are required if the moderator is Hydrogen
Two identical resistors are connected in parallel across a 23Vbattery, which supplies them with a total power of 8.7W. While thebattery is still connected, one of the resistors is heated so thatits resistance doubles. The resistance of the other r..
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