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A solar cell generates a potential difference of 0.094 V when a 560 ? resistor is connected across it, and a potential difference of 0.14 V when a 1100 ? resistor is substituted. What are the
(a) internal resistance and
(b) emf of the solar cell?
(c) The area of the cell is 1.6 cm2 and the rate per unit area at which it receives energy from light is 6.3 mW/cm2. What is the efficiency of the cell for converting light energy to thermal energy in the 1100 ? external resistor?
Explain how does a magnitude of the electrical force between a pair of charged particles change when they are brought to half their original distance of seperation?
Using Newton's laws find the normal force on the object. Determine the force of kinetic friction on the object
Assume that the Sun radiates like an ideal thermal source at a temperature of 6000 K, What is the intensity of the solar radiation emitted in the range 550.0 nm to 552.0 nm
A hotel elevator ascends 110 {rm m} with a maximum speed of 4 {rm m/s}. Its acceleration and deceleration both have a magnitude of 1.20 {rm m/s^2}.
A 92 kg climber rappels down the rope applying friction with figure eight (piece of climbing equipment ) to reduce his his downward acceleration.
While on an elevator, Jaden's apparent weight is 550N, When he is on the ground, the scale reads 600N, What is Jaden's acceleration while on the elevator
A 795 kg car moving at 26 m/s brakes to a stop. The brakes contain about 15 kg of iron, that absorbs the energy. What is the increase in temperature of the brakes.
Take the questionnaire of Psychology and Your Life. Are you more consistent with right or left brain orientation? How will your strengths help you with your future goals.
Two charged bodies exert an electrostatic force of 144 N on each other. If the distance between them is quadrupled and magnitude of one charge is cut in half, what is the new force between them.
What is the Acceleration of an object moving on a circular track
Consider two widely separated conducting spheres, 1 and 2, the second having six times the diameter of the first. Find the final charge q1 and q2
However, the current begins to decrease as the resistive element warms up. When the toaster reaches its final operating temperature, the current has dropped to 1.53 A.
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