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DedPeter [7]
3 years ago
15

A tightly sealed glass jar is an example of which type of system?

Physics
2 answers:
Katarina [22]3 years ago
7 0
Thermal expansion and contraction, specifically the different coefficients of thermal expansion between glass & metal is a closed system ; D
noname [10]3 years ago
4 0

D. hope it helps. :D

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A violin string is 45.0 cm long and has a mass of 0.242 g. When tightened on the neck of the violin, the distance between the pi
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The tension is 75.22 Newtons

Explanation:

The velocity of a wave on a rope is:

v=\sqrt{\frac{TL}{M}} (1)

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It's is important to note that in our case L the length of the string is different from l the distance between the pin and fret to produce a Concert A, so for the first harmonic:

\lambda_{1}=\frac{2(0.425m)}{1}=0.85 m

We can now find T on (3) using all the values we have:

T= \frac{2.42\times10^{-3}(0.85* 440)^2}{0.45}

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