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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)
An particle with a charge value of 0.21 C is moving in the presence of an electric field of 5.5 N/C. What force does the particle experience
A 20.0 kg box is pulled up a ramp a distance d = 15.0 m with a force of Fp = 165 N parallel to the ramp, as shown in the figure to the right. Find the work done on the block by gravity
Two large, parallel, conducting plates are 17 cm apart and have charges of equal magnitudeand opposite sign on their facing surfaces. What is the potential difference between the plates
You are working out on a rowing machine. Each time you pull the rowing bar (which simulates the oars) toward you, find the magnitude of the force that you exert on the handle
A 330-g air track cart on a horizontal air track is attached to a string that goes over a pulley with a moment of inertia of 5.00 x 10-6 kg?m2 and a radius of 1.35 cm. Write Newton's second law equation for each of the three objects
An automobile can be considered to be mounted on four identicalsprings as far as vertical oscillations are concerned. The springsof a certain car are adjusted so that the oscillations have afrequency of 2.62 Hz.
q1. a proton orbits a long charged wire making 1.50 times 10 6 revolutions per second. the radius of the orbit is 1.60
An upright object is placed a distance in front of a converging lens equal to twice the focal length (f1) of the lens. On the other side of the lens is a converging mirror of focal length f2 separated from the lens by a distance 2(f1+f2).
A person pushes a 13.0 kg lawn mower at constant speed with a force of 74.0 N directed along the handle, which is at an angle of ? = 40.0° to the horizontal (Fig. 4-40).b.Calculate the horizontal retarding force on the mower
A thin spherical shell has a radius of 2 m and a mass of 380 kg, and its center is located at the origin of a coordinate system. Another spherical shell with a radius of 1 m and mass 105 kg is inside the larger shell with its center at 0.6 m on the x..
In a strictly scientific experiment, a student athlete throws rock out the window in all direction. All rocks have the same initial speed v. Find the height h of the window above the ground
At one instant a bicyclist is 53m due east of a park's flagpole, going due south with a speed of 12m/s. Then 37s later, the cyclist is 53m due north of the flagpole, going due east with a speed of 12m/s. For the cyclist in this 37s interval.
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