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mote1985 [20]
3 years ago
7

Which weighs more a pound of feathers or a pound of bricks

Physics
1 answer:
Alecsey [184]3 years ago
5 0

Answer: neither

Explanation:

both weight exactly one pound. although the quantity of feathers may outnumber the bricks, they both weigh a pound

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A parallel-plate air capacitor is made from two plates 0.210 m square, spaced 0.815 cm apart. it is connected to a 120 v battery
GuDViN [60]

Answer:

at the beginning: 2.3\cdot 10^{-10} F

when the plates are pulled apart: 1.1\cdot 10^{-10} F

Explanation:

The capacitance of a parallel-plate capacitor is given by

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A=0.210 m^2 is the area of the plates

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Substituting into the formula, we find

C=(1)(8.85\cdot 10^{-12}F/m)\frac{0.210 m^2}{8.15\cdot 10^{-3} m}=2.3\cdot 10^{-10} F

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