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Anettt [7]
3 years ago
14

A 1.30-m long gas column that is open at one end and closed at the other end has a fundamental resonant frequency 80.0 Hz. What

is the speed of sound in this gas?
Physics
1 answer:
Soloha48 [4]3 years ago
7 0

Answer:

The speed of sound in this gas = 416 m/s

Explanation:

The wave produced in a column open at one end, closed at the other has the relation L = λ/4 with the length of the tube.

The standing wave pattern for the tube closed at one end has a node at the closed end & an antinode at the open end.

The distance between the node and antinode = wavelength/4 = λ/4

1.3 = λ/4

λ = 5.20 m

For any wave, v = fλ

v = velocity of the wave = ?

f = frequency of the wave = 80 Hz

λ = wavelength of the wave = 5.20 m

v = 5.2 × 80 = 416 m/s

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Two light waves will interfere constructively if the path-length difference between them is a whole number.

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The equivalent phase differences between the waves will be 2\pi or 360 degrees, 4\pi or 720 degrees, 6\pi 1080 degrees etc

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2 years ago
A spring has a spring constant of 20 N/m. How much potential energy is stored in the spring as it stretched 0.20 m
makkiz [27]
The elastic potential energy (Ep) is given by Ep = \frac{1}{2}*k*x^2

Data: 
Ep = ? (Joule)
k = 20 N/m
x (displacement) = 0.20 m

Solving:
Ep = \frac{1}{2}*k*x^2
Ep = \frac{1}{2}*20*0.20^2
Ep =  \frac{20*0.04}{2}
Ep =  \frac{0.8}{2}
\boxed{\boxed{Ep = 0.4\:J}}\end{array}}\qquad\quad\checkmark
7 0
2 years ago
What are the variables in Gay-Lussac's law? pressure and volume pressure, temperature, and volume pressure and temperature volum
Yanka [14]

Answer:

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Explanation:

3 0
2 years ago
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The depth of a pond is 1.5m. Calculate the pressure caused by the water at the bottom of the pond ?​?
zepelin [54]

Answer:

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Force of gravity=10N

\begin{gathered}\\ \sf\longmapsto Pressure=\dfrac{Force}{Area}\end{gathered}

⟼Pressure=

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Force

\begin{gathered}\\ \sf\longmapsto Pressure=\dfrac{10}{2.25}\end{gathered}

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2.25

10

\begin{gathered}\\ \sf\longmapsto Pressure=4.4Pa\end{gathered}

⟼Pressure=4.4Pa

5 0
3 years ago
one mole of water is equivalent to 18 grams of water. a glass of water has a mass of 200 g. how many moles of water is in this?
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1 mole = 18 g
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