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A TV remote control emits IR light. If the detector on the TV set is not to react to visible light, could it make use of silicon as a "window" with its energy gap Eg =1.27 eV? What is the shortest-wavelength light that can strike silicon without causing electrons to jump from the valence band to the conduction band.
If a violin string is tuned to a certain note, by how many times must the tension in the string be increased if it is to emit a note of 4 times the original frequency
In daily life we see many cases of people who are caught misrepresenting things who soon thereafter are excused and accepted by their contemporaries. How is This different in science.
In the two-slit experiment, the distance between the slits and the screen is 1.10 m and the distance between the slits is 0.100 mm. what is the wavelength of light
Consider an object on an incline where friction is present. The angle between the incline and the horizontal is ?, Find an expression for the acceleration of this object. Treat down the incline as the positive direction
Calculate the Work required (in eV) to move a stationary electron from the location r3 to r5 in a hydrogen atom
The intensity on the screen at a certain point in a double-slit interference pattern is 72.0% of the maximum value. What minimum phase difference (in radians) between sources produces this result
A 9.27-m-long glider with a mass of 545.48 kg (including the passengers) is gliding horizontally through the air at 29.02 m/s, What is the glider's horizontal velocity
An X-ray photon with a wavelength of 0.120 nm scatters off a free electron at test rest. What is the direction of the scattered electron
The fresh water behind a reservoir dam is 15.0 m deep. A horizontal pipe 2.50 cm in diameter passes through the dam 7.5 m below the water surface, What volume of water flows out of the pipe in 4.0 hours
A horse draws a sled horizontally across a snow-covered field. The coefficient of friction between the sled and the snow is 0.175, and the mass of the sled, what is the power needed to accomplish this
A 82 kg student sits on a chari which is soley supported by a solid 0.92 meter long steel rod 0.98 cm in diameter
A piano wire with mass 2.90g and length 82.0cm is stretched with a tension of 35.0N. Calculate the average power carried by the wave
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