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serg [7]
3 years ago
11

Most papers do not reflect light very well because its surface is somewhat rough. State True or False.

Physics
1 answer:
bixtya [17]3 years ago
5 0
True.
I do believe since the only reflective paper is photo paper, and it's coated to be smooth. 
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Find the average energy E for (a) An n-state system, in which a given state can have energy 0,,2,...,n . (b) A harmonic oscillat
kicyunya [14]

Answer:

a♦1  E_average = n E₀ / 2 , b) E_average= infinity

Explanation:

The energy values ​​form an arithmetic series, whose sum is

          S = n (a₁ + aₙ) / 2 = n (2a₁ + (n-1) r)/ 2

Where n is the number of terms, a₁ is the first term, aₙ the last term and r is the difference between two consecutive numbers in the series

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Therefore the sum is

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      S = n² E₀ / 2

     

The average value is

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         E_average = n E₀ / 2

b) the case of harmonic oscillation

We have two possibilities.

- if we take a finite number and terms gives the same previous value

- If we take an infinite number of fears the series gives infinity and the average is also infinite

          E_average= infinity

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