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An LED is constructed from a pn-junction based on a certain GA-As-P semiconducting material whose energy gap is 1.9 eV. What is the wavelength of the emitted light?
Your roommate is working on his bicycle and has the bike upside down. He spins the 70.0cm -diameter wheel, What is the speed and acceleration of the pebble
A pair of speakers separated by 0.7 m is driven by the same oscillator at a frequency of 674Hz. An observer, first positioned at one of the speakers, begins to walk along a line perpendicular to the line joining the speakers. (Assume the speed of ..
A heat engine has an effiency of 35.0 % and recieves 150 K of heat per cycle. How much heat does it exhaust in each cycle
In 9.7 s a fisherman winds 2.8 m of fishing line onto a reel whose radius is 3.0 cm, Determine the angular speed of the reel
If lithium ion Li+2 is treated as a classical system of one electron of charge ?e going around a nucleus of charge 3e on a circle of radius 1.77× 10?11 m
During WWII some paratroopers landed in gliders instead of dropped by parachute. The gliders had no power of their own, Find the lift force provided by the glider's wings
A single-turn rectangular coil with a width of 0.3m and a height of 0.2m is in the yz plane. Find the change in flux across the rectangular loop
Briefly describe how the resulting interference pattern will differ for the various types of particles passing through: protons, electrons, neutrinos (mass close to zero) and photons. Assume that the distribution of particle energies is the same f..
or a given initial projectile speed, For what other launch angle will the projectile have the same range
Defend or refute the statements based upon your reading or any other outside sources you can quote. All statements must be backed up with citable references that are to be included in your discussion.
A 2.8 kg block slides along a frictionless horizontal with a speed of 5.5 m/s. After sliding a distance of 8m, the block makes a smooth transition to a frictionless ramp inclined at an angle of 43 degrees to the horizontal. The acceleration of gravit..
q1. a spring of force constant k2.5102 nm is suspended form a rigid support. an object o mass 1.00 kg is attached to
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