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The tub of a washer goes into its spin-drycycle, starting from rest and reaching an angular speed of 7.8 rev/s in 3.4 s.
An electron is trapped in an infinite potential well with L = 2nm. Suppose the wave function of the electron is given: (see attachment for wave function)
Calculate the expectation values , , and for the ground state, | 0 >, and the first excited state, | 1 >, of the harmonic oscillator.
Rigid rod OA is 2 ft long and rotated around fixed pt O. This rod is pinned at A to rigid connecting rod AB, 6 ft long, which in turn is pinned at B to piston C
Consider the state of a harmonic oscillator initially (t=0) to be given by |phi >= 5|0 + 12| 1>.
A boeing 747 jet with 385 people cruising 39000 ft travels 280 yds on gallon of fuel. How many gallons will it need to travel 2000 km.
An electron with amass of 9.11*10 -31 kg has a velocity of 4.3*10 6m/s in the innermost orbit of a hydrongen atom. What is the de Broglie wavelength
The wheel of a motor, accelerated uniformly from rest, rotates through 2.5 rad during the first second. Find the angle rotated during the next second.
Show mathematically how two 3rd-class levers joined together in a series increase angular velocity versus using a single 3rd-class lever.
A ceiling fan has one red blade. Initially rotating in a counterclockwise (positive direction) with angular velocity Wo= +30 radians per second.
In the dirac notation for a quantum state of a system, an eigenstate wave function u_n is replaced by the vector |n>, and a general state wave function ?
Determine the principal stresses and the maximum shear stress at the bearings (ie locations B and D) and also at the mid-spindle position.
How fast (in rpm) must a centrifuge rotate if a particle 8.06 cm from the axis of rotation is to experience an acceleration of 79000 g?
A chandelier suspended from the ceiling swings out to an angle of 15.7 degrees throughout the turn. What is the speed of the train?
A 243 N sphere 0.199 m in radius rolls, without slipping, 6.06 m down a ramp that is inclined at 36.9° with the horizontal.
It is given a tiny push. What will be the speed of the upper end of the pole just before it hits the ground? Assume the lower end does not slip.
A solid, horizontal cylinder of mass 10.4 kg and radius 1.13 m rotates with an angular speed of 6.81 rad/s about a fixed vertical axis through its center.
A wheel of radius 0.20 meters is mounted on a frictionless horizontal axis. The rotational inertia of the wheel about the axis is 0.050 kgm^2.
Recall that a 1-D delta-function potential well of the form V (x) = -B delta(x) had exactly one bound state, with a double-tailed exponential wave function.
What is the rotational inertia of the rotor assembly about the axis of rotation? (Each blade can be considered to be a thin rod rotated about one end.)
Does a centripetal force that acts on an object rotating in a circular path do work on an object?
An angular momentum system is prepared in the state
A 38-mH inductor stores 4.0 x 10^-5 J when carrying a dc current. What is the magnitude of that current?
Consider a cubic infinite potential well of length L. (Assume that the particle is confined to stay withing 0 and L in all the directions.)
Suppose the ring rotates once every 4.70s. If a rider's mass is 52.0kg, with how much force does the ring push on her at the top of the ride?