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taurus [48]
3 years ago
15

Please answer fast ————-

Physics
1 answer:
Citrus2011 [14]3 years ago
4 0
I’m sorry i don’t know the answer
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As you lift a book into the air, what kind of energy are you increasing in the book?
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A woman in a sprint race accelerates from rest to 8.7 m/s in 2.7 s. What is her displacement?​
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8 0
3 years ago
A 10.0-cm-long solenoid of diameter 0.400 cm is wound uniformly with 800 turns. A second coil with 50 turns is wound around the
levacccp [35]

Answer:

M = 6.32 x 10⁻⁶ H

Explanation:

given,

Length of solenoid = 10 cm = 0.1 m

diameter = 0.40 cm

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mutual inductance will be equal to  

     M = \dfrac{\mu_0N_1N_2A}{l}

     M = \dfrac{4\pi \times 10^{-7}\times 800\times 50 \times \pi \times (0.002)^2}{0.01}

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7 0
4 years ago
How much energy does the electron have initially in the n=4 excited state?what is the change in energy if the electron from part
Ierofanga [76]
What it looks to be that you found in A was the "initial"...b/c the question asks: 
<span>"how much energy does the electron have 'initially' in the n=4 excited state?" </span>

<span>"final" would be where it 'finally' ends up at, ie. its last stop...as for this question...the 'ground state' as in its lowest energy level. </span>

The answer comes to: <span>−1.36×10^−19 J</span>


You use the same equation for the second part as for part a. 
<span>just have to subract the 2 as in the only diff for part 2 is that you use 1squared rather than 4squared & subract "final -initial" & you should get -2.05*10^-18 as your answer. </span>
8 0
3 years ago
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