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What is maximum light wavelength to be absorbed for creating electron-hole pairs in one type of Copper indium gallium (di)selenide (CIGS) photovoltaic cell? Assume this cell has a band gap of 1.35 eV. What happens, if this CIGS solar cell is irradiated with light having a wavelength of 950 nm? Explain how the CIGS semiconductor interacts with this 950 nm light.
a 2 meter long air column is open at both ends. the frequency of a certain harmonic is 410 hz and the frequency of the
A certain camera lens has a focal length of 149 mm. Its position can be adjusted to produce images when the lens is between 152 mm, Over what range of object distances is the lens useful
A 35-kg child rides a playground merry-go-round, standing 1.6 m from its center. What was the distance travelled by the child during this time
If an electron (e=-1.6*10^-19C) is placed at the distance of 2m away, how much energy is required to move it essentially out of this potential field
A 4 kg mass is hung from a string which is wrapped around a cylindrical pulley (a cylindrical shell). If the mass accelerates downward at 4.90 m/s2, what is the mass of pulley.
A string on a guitar vibrates at 420 Hz. If the tension on the string is 102 N, what is the mass of the string if the portion that vibrates is 63.7 cm long
A boat crosses the river from the south shore to the north shore by maintaining a constant velocity of 15.0 m/s due north relative to the water. Illustrate what is the velocity of the boat relative to shore?
Tom and Mary are riding a merry-go-round. Tom is on a horse about half way between the center and the outer rim, Which child has the larger angular speed
In an electricity experiment, a 0.800g plastic ball is suspended on a 51.0cm long string and given an electric charge. what is the tension of the string
What is the magnitude of the electric field between two parallel plates 6.1mm apart if the potential difference between them is 150V
What is electric field in the wire
A 121 Watt driveway light bulb is on 6.5 hours per day. Assuming the power company charges 8.6 cents for each kilowatt-hour of electricity used. Calculate the annual cost to operate the bulb
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