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4 years ago

11

You charge a capacitor and then discharges it through a resistor. You notice that, after four time constants, the voltage across

the capacitor has decreased to _____ of its value just prior to the initiation of the discharge.

1 answer:

ollegr [7]4 years ago

5 0

Answer: half of it's value?

Explanation:

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In order to increase thermal energy, the temperature must ___________.

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In order to increase thermal energy, the temperature must <span>increase</span>

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3 years ago

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An object on a number line moved from x = 15 cm to x = 165 cm and then

olasank [31]

Answer:

v_avg = 2.9 cm/s

Explanation:

The average velocity of the object is the sum of the distance of all its trajectories divided the time:

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x_all is the total distance traveled by the object. In this case you have that the object traveled in the first trajectory 165cm-15cm = 150cm, and in the second one, 165cm - 25cm = 140cm

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The average velocity is, for t = 100s

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Explanation:

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3 years ago

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Julli [10]

I can't see the answers clearly, but I can see the question. So, I'll just give you a clue/hint.

A stars brightness actually depends on how far it is from your location. If it's far away, it will be dimmer than its counterpart that is closer. To summarize it, if two stars have the same brightness level and one is farther away than the other, the one farther away will appear dimmer than its closer counterpart.

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3 years ago

Does dropping a magnet down a copper tube produce a current in the tube? explain your answer.

Ratling [72]

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The current generated in the pipe by the falling magnet is induced where the magnetic field is changing, which is only close to the magnet. Try slitting the pipe lengthwise along one side.

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3 years ago