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A parallel plate capacitor has plates of area A and seperation of d and is charged to a potential difference of V. The charging battery is then disconnected and the plates are pulled apart until their separation is 2d. Derive expressions in terms of A, d, and V for:
a. the new potential difference
b. the initial and final stored energies
c. work required to seperate plates
A potential difference of ?V = 12.0 V is found to produce a current of 0.40 A in a 3.2 m length of wire with a uniform radius of 0.40 cm, What is the resistivity of the wire
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Compute the number of electrons in a small, electrically neutral silver pin that has a mass of 9.0g. silver has 47 electrons per atom, and its molar mass is 107.87 g/mol.
If the partial pressure of water vapor is 47 mm Hg in the lungs at 760 mm Hg pressure, what percentage of air does the water vapor constitue
Illustrate a basketball momentum vectors
A useful model of a water molecule is sketched in the figure below, with point charges of 5.2 10-20 C at the H sites, What is the total electric potential energy of this model of a water molecule
Forces of 11.0 N norths, 19.5 N east, and 15.90 N south are simultaneously applied to a 3.70 kg mass as it rests on an air table. What is the magnitude of its acceleration.
A 67.3 kg sled starts at rest on a horizontal road. The coefficient of kinetic friction between the sled and the road is μk = 0.202. A man pulls the sled a distance 5.07 m along the ground by exerting a constant force of magnitude 532 N on a rope tha..
suppose that all the energy goes into the arrow, with what speed does the arrow leave the bow.
A plane flies from base camp to Lake A, 300 km away in the direction 36.9° south of east. After dropping off supplies it flies to Lake B, which is 260km at 30.0° west of north from Lake A. find out the distance and direction from Lake B to the bas..
How much ice was in bucket before the copper block.
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