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A homemade capacitor is assembled with placing two 9 in pie pans 8 cm apart and connecting them to the opposite terminals of a 9 V battery.
1. Estimate the capacitance. in pF
2. Estimate the charge on each plate. in pC
3. Estimate the electric field halfway among the plates. in V/m
4. Estimate the work done by the battery to charge the plates. in J
Two blocks made of different materials, connected by a thin cord, slide down a plane ramp inclined at an angle 32 degrees to the horizontal. Determine the tension in the cord
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A Carnot engine uses a steam boiler at 100°C as the high-temperature reservoir. Determine the useful power output of the heat engine
Determine the energy needed to accelerate a spaceship with a mass m = 25 × 103 kilogram to a speed of 0.40c. Compare this number with the approximate annual energy usage of Earth, 1021 Joule
What is the coefficient of kinetic friction between the table and floor.
A box of mass 72.0 kg is connected to a second box with a mass of 34.0 kg. find the magnitude of the tension in the string between the two boxes
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A Carnot heat engine takes 2000J of heat from the high temperature reservoir at 227 degrees Celsius, What is the Carnot efficiency
The force of attraction between a -20.0 ?C and +80.0 ?C charge is 4.00 N, What is the separation between these two charges
A point charge q of mass m is held a distance from an infinite grounded conducting plane. There is no gravitation. When released, the charge starts to move toward the plane. What is the charge velocity when it hits the plane?
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