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The Hamiltonian of a system of two (spin- 1/2) electrons, H= ?1?z1+?2?z2 where ?z is the Pauli Matrix, ? is an energy parameter and our subscripts represent the two electrons 1 and 2. What is the basis where this Hamiltonian is diagonal and what is the matrix of the Hamiltonian in this basis?
Two sinusoidal waves, identical except for phase, travel in the same direction along a string producing a net wave y'(x, t) = (2.5 mm) sin(17x - 4.0t + 0.840 rad), with x in meters and t in seconds. (Assume that the phase constant for one of the i..
A spy satellite is in circular orbit around Earth. It makes one revolution in 6.01 hours. How high above Earth's surface is the satellite
A solid wood door 1.00 m wide and 2.00 m hight is hinged alone one side and has a total mass of 40.0 kg, whats the final angular speed of the door
A rocket ship at rest in space gives a short blast of its engine, firing 90 kg of exhaust gas out the back end with an average velocity of 700 m/s.
A ball is thrown straight upwards from the roof of a tall building. The building is 60.0 m high. find the velocity of the ball right before it hits the ground
A person pulls a 5.0 kg sled by a rope across a floor. The coefficient of kinetic friction between the floor and the sled is 0.15. What is the magnitude of the normal force
Suppose a disk is 0.50 cm thick and 4.0 cm in diameter. If this disk supports half the weight of a 90 kg person, by what fraction of its thickness does the disk compress
A uniform disk with a mass of 813g and a radius of 17cm is rotating on frictionless bearings with a rotational speed of 18Hz, what is the new rotational speed of the disk
A parallel-plate capacitor has 3.95 cm2 plates that are separated by 4.29 mm with air between them. how much energy does it store
question1two window washers bob and joe are on a 3.00 m long 380 n scaffold supported by two cables attached to its
A particle of mass m in a three-dimensional harmonic oscillator of poterntial energy (m w^2 r^2)/2 has spectrum given by E=h bar w(2nr+l+3/2) where nr is the radial quantum number and l is the orbital angular momentum suppose the particle has charge ..
A 1.00 kg block Is resting against a light, compressed spring at the bottom of a rough plane inclined at an angle of 30 degrees. Kinetic friction between box and plane is 0.100. Suppose the spring is compressed 10 cm from its equilibrium length.
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