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A solar cell generates a potential difference of 0.1452 V when a 500 ? resistor is connected across it, and a potential difference of 0.2195 V when a 1000 ? resistor is substituted.
a) What is the internal resistance of the solar cell?
b) What is the emf of the solar cell?
c) The area of the cell is 5.0 cm2, 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 ? external resistor? (percent = Do not enter a unit)
A particle attached to a spring with k 50 N/m is undergoing simple harmonic motion, and its position is described by the equation x (5.7 m)cos(7.5t), What is the maximum potential energy
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You want a screen to be illuminated with an intensity of 440 mW/m2. The screen is 12.97 m away from the light source, What is the rms value of the electric field at the screen
An object is 15 cm in front of a diverging lens that has a focal length of -8.7 cm. How far in front of the lens should the object be placed
A huge explosion is heard 77.7 miles away. How long does it take the sound to travel that far
How much time elapses before the geologists hears the sound from the eruption? Discuss what we are assuming about the propagation of the wave. How much time does it take the seismic waves produced by the eruption to reach the geologist’s camp, ass..
The current supplied by a battery in a portable device is typically 0.131 A. Find the number of electrons passing through the device
A brave child decides to grab on to an already spinning merry-go-round. The child is initially at rest and has a mass of 34.5 kg. What is the moment of inertia of the merry-go-round
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The jet accelerates uniformly, and during that time, the pendulum oscillates about the equilibrium position shown by the solid line, with D = 0.370 m. find the magnitude of the plane's acceleration.
An electric car accelerates for 8.0 s by drawing energy from its 345-V battery pack. During this time, Find the minimum horsepower rating of the car
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