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A He-Ne laser cavity has a cylindrical geometry with length 30cm and diameter 0:5cm. The laser transition is at 633nm, with a frequency width of 10nm.
(a) Determine the number of modes in the laser cavity that are within the laser transition linewidth.
(b) A power meter is then placed at the cavity output coupler for 1 minute. The reading is constant at 1mW. Determine the average number of photons per cavity mode.
A string with a length of 3.0 m has two adjacent resonances at frequencies 112 Hz and 140 Hz. What is the wavelength of the first harmonic
Consider a pipe of length 80.0 open at both ends. What is the lowest frequency of the sound wave produced when you blow into the pipe? A hole is now drilled through the side of the pipe and air is blown again into the pipe through the same opening...
A 2.00 kg frictionless block is attached to a horizontal spring as shown. At t = 0, the position x = 0.225 m, and the velocity is 4.25 m/s toward the right in the positive x direction. Position x as a function of t is: x = A*cos(?t ) , where A ..
you throw a book straight up from s height of 2 meters above the ground with a speed of 15m/s. what is the maximum height above the ground that the book reaches
A 0.40-kg iron horseshoe is dropped into 1.15L of water in a 0.34-kg iron pot initially at 20.0?C. Determine the initial temperature of the hot horseshoe.
A velocity selector has a magnetic field of magnitude 0.32 T perpendicular to an electric field of magnitude of 0.34 MV/m. What must be the speed of a particle for it to pass through undeflected
If the initial speed of the block is increased to infinity, it turns out that the time taken for the block to come to a rest approaches a finite value whereas the distance traveled approaches infinity, Find the maximum time taken for the block to c..
A series RCL circuit is comprised of a 3.00-mH inductor and a 5.00-µF capacitor. What is the resonant frequency of this circuit
The coefficients of static and kinetic friction are 0.2 and 0.1 respectively. What is the minimum magnitude of the force F, parallel to the plane, that will prevent the block from slipping
q1. what is the electric field strength at the point in space where a proton m1.67x10 -27 kg experiences an
If the spring is pulled until it stretches 2.40cm and the pack remains at rest, what is the force of friction exerted on the backpack by the table
A square loop (length along one side = 20 cm) rotates in a constant magnetic field which has a magnitude of 2.0 T. At an instant when the angle between the field and the normal to the plane of the loop is equal to 20? and increasing at the rate of 10..
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