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1. A solar cell generates a potential difference of0.0806 V when a 500 Ω resistor is connected acrossit, and a potential difference of 0.1241 V when a 1000Ω resistor is substituted. What is the internal resistance of the solar cell?
2. What is the emf of the solarcell?
3. The area of the cell is 5.0cm2, and the rate per unit area at which it receives energy from light is 2.0m W/cm2. What is the efficiency of the cell for converting the light energy to thermal energy in the 1000 Ωexternal resistor? (percent = Do not enter a unit)
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Estimate the molar heat of vaporization of a liquid whose vaporpressure doubles when the temperature is raised from 85C to95C
A student in a parked car honks the horn, which has a `proper' frequency of 310 Hz. Calculate the speed of the approaching vehicle
A 4900 kg lunar lander is in orbit 60 km above the surface of the moon. How much work must the thrusters do
If you place the box on a dolly of mass 5.3 {rm kg} and with coefficient of rolling friction 1.3×10−2, illustrate what horizontal acceleration would that 171 {rm N} force provide?
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