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san4es73 [151]
4 years ago
8

A microfarad capacitor is charged via a 12v battery. there is 1 kohms resistor in series with the capacitor. how much current is

flowing in the circuit after 1 second?
Physics
1 answer:
olga2289 [7]4 years ago
7 0
The answer completely depends on the number that belongs in the space before the word "microfarad".
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A 0.54 kg particle has a speed of 5.0 m/s at point A and kinetic energy of 7.5 J at point B. What is
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<u>Answers</u>

(a)  6.75 Joules.

(b)  5.27 m/s

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<u>Explanation</u>

Kinetic energy is the energy possessed by a body in motion.

(a) its kinetic energy at A?

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       = 1/2 ×  0.54 × 5²

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K.E = 1/2 mv²

7.5 = 1/2 × 0.54 × V²

V² = 7.5 ÷ 0.27

     = 27.77778

V = √27.77778

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(c) the total work done on the particle as it moves from A to B?

Work done = 7.5 - 6.75

                 = 0.75 Joules

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