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Over [174]
3 years ago
15

A student is blowing over a straw 25 cm long, which is closed at one end. If the sound produced has a frequency of 350 Hz, what

is the speed of sound in the straw?
Physics
1 answer:
NARA [144]3 years ago
7 0

Answer:

If the end of the tube is uncovered such that the air at the end of the tube can freely vibrate when the sound wave reaches it, then the end is referred to as an open end. If both ends of the tube are uncovered or open, the musical instrument is said to contain an open-end air column.

Explanation: hope this helps:)

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A 400 N steel ball is suspended by a light rope from<br>the ceiling. The tension in the rope is​
alina1380 [7]

Answer:

As force = tension in string so tension in string is 400N

Explanation:

8 0
3 years ago
Suppose that 4 charged particles, all having a positive charge Q, are placed and fixed at the vertices of a square, where every
algol [13]

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8 0
3 years ago
What is the magnitude of the electric force of attraction between an iron nucleus (q=+26e) and its innermost electron if the dis
iris [78.8K]

Answer:

The magnitude of the force on an electron is 0.069 N.

Explanation:

Given that,

Distance between 1.70 A from the plutonium nucleus, d=1.5\times 10^{-12}\ m

The number of electron in iron nucleus is +26e.

To find,

The magnitude of the force between an iron nucleus.

Solution,

Total charge in the plutonium nucleus is, q=26\times 1.6\times 10^{-19}=4.16\times 10^{-18}\ C. The electric force between charges is given by :

F=\dfrac{kq^2}{d^2}

F=\dfrac{9\times 10^9\times (4.16\times 10^{-18})^2}{(1.5\times 10^{-12})^2}

F = 0.069 N

So, the magnitude of the force on an electron is 0.069 N. Hence, this is the required solution.

4 0
3 years ago
Help please…………………,,,,,
Sever21 [200]

Answer:

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Explanation:

am smrt

5 0
3 years ago
The diagram below shows a ray of light moving from left to right, through the interface between two mediums. Snell's law is used
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The angle of refraction is <span>45°.</span>
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