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pantera1 [17]
3 years ago
15

Help me please

Physics
2 answers:
vodka [1.7K]3 years ago
7 0
#4 and #9 are true.
#10 is true IF it's an atom of Hydrogen.
The other 7 statements are false.
yarga [219]3 years ago
3 0
1. False
2.False
3.False
4.True
5. True
6. False
7.True
8.False
9. True
10. False

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Answer: 405.3 minutes

Explanation: In order to explain this problem we have to use the following:

Fisrtly we calculate the volume of the wire, this is given by:

Vwire=π*r^2*L where r and L are the radius and L the length of teh wire, respectively.

Vwire=π*1.25*10^-3*0.26=1.27*10^-6 m^3

then the number of the total electrons in tthe wire volume is given by;

n° electrons in the wire=ρ*Vwire=8.4*10^28*1.27*10^-6 m^3=1.07 *10^23

Finally, considering the current in the wire equal to 4.4*10^18 electrons/s

the time consuming to extract all the electrons from the wire is given by:

t= total electrons in the wire/ current=1.067*10^23/4.4*10^18=24,318 s

equivalent to 405.3 minutes

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3 years ago
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3 years ago
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Imagine a Rip-van-Winkle type who lives in the mountains. Just before going to sleep he yells "WAKE UP" and the sound echoes off
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Answer:

4939200 m

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