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A new material for possible use in photovoltaic cells has an energy gap (Eg) of 1.06 eV. What is the maximum wavelength in meters that would work for light on such a photo-cell?
A 2.93kg stone is tied to a thin, light wire wrapped around the outer edge of the uniform 9.83kg cylindrical pulley, Find the angular acceleration of the pulley
A coil of 160 turns and area 0.20 m2 is placed with its axisparallel to a magnetic field of 0.40 T. The magnetic field changes from 0.40 T in the x-direction to 0.40 Tin the negative x-direction in 2.0 s. If the resistance of the coil is 16 Ω, at ..
Television stations broadcast in VHF and UHF (VHF is very high frequency). The VHF bands for digital broadcast lie within the frequency range of 54.0 MHz and 216 MHz. What is the broadcast frequency range for channel
Find the expression for the electric field, E? , of the ring as the point P becomes very far from the ring (x >> R) in terms of the radius R
Suppose Magnetic monopoles may exist, first start off by writing maxwells equations in electro- and magneto-statics and also write down the usual Lorentz force law for a charge in E and B fields. Now modify these 5 equations to allow for the possi..
Sheena can row a boat at 3.03 mi/h in still water. She needs to cross a river that is 1.10 mi wide with a current flowing at 1.55 mi/h. How long does it take her to cross the river
1. a capacitor in an rc circuit is charging. which one of the following statements is correct?a there is a magnetic
An electron is in a vacuum near earth's surface and located at y =0 on a vertical y axis. At what value of y should a second electronbe placed such that its electrostatic force on the first electronbalances the gravitational force on the first electr..
Illustrate what is the maximum height of each ball after the elastic collision? What are the coordinates of the CM of the two balls when the lighter ball was pulled up? Consider the heavier ball to be at the origin before the collision.
A standardized biological microscope has an 8.0--focal-length objective. What focal-length eyepiece should be used to achieve a total magnification of.
A circular disk of radius 2.0 m rotates, starting from rest, with a constant angular acceleration of 20.0 rad/s2. What is the tangential acceleration of a point on the edge
The wavelength of the laser beam used in a compact disc player is 510 nm. Estimate the spacing between the slits of the grating
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