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Svetllana [295]
4 years ago
11

I need some help with question 4. I believe the answer is 3 h to 4 h but I'm not sure

Physics
1 answer:
Talja [164]4 years ago
4 0
The answer is C. 3h to 4h because they are the the fastest on the graph go look ;)
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All of the following are examples of nonrenewable resources except __________.
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What is it that makes a magnet different from a piece of iron that is not mangetic?​
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Could someone please explain isotopes, and what they do/are? If not thats fine, thank you
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Explanation:

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7 0
3 years ago
A solenoid having an inductance of 5.41 μH is connected in series with a 0.949 kΩ resistor. (a) If a 16.0 V battery is connected
vekshin1

Answer:

(A) 9.14\times 10^{-9}sec

(B) 6.20\times 10^{-3}A

Explanation:

We have given inductance L=5.41\mu H=5.41\times 10^{-6}H

Resistance R=0.949kohm=0.949\times 10^3ohm

Time constant of RL circuit is equal to \tau =\frac{L}{R}

\tau =\frac{5.41\times 10^{-6}}{0.949\times 10^3}=5.70\times 10^{-9}sec

Battery voltage e = 16 volt

(a) It is given current becomes 79.9% of its final value

Current in RL circuit is given by

i=i_0(1-e^{\frac{-t}{\tau }})

According to question

0.799i_0=i_0(1-e^{\frac{-t}{\tau }})

e^{\frac{-t}{\tau }}=0.201

{\frac{-t}{\tau }}=ln0.201

{\frac{-t}{5.7\times 10^{-9} }}=-1.6044

t=9.14\times 10^{-9}sec

(b) Current at t=\tau sec

i=i_0(1-e^{\frac{-t}{\tau }})

i=\frac{16}{0.949\times 10^3}(1-e^{\frac{-\tau }{\tau }})

i=6.20\times 10^{-3}A

3 0
3 years ago
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