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elena-14-01-66 [18.8K]
2 years ago
15

The __ is responsible for determining the frequency of vibration of the air column in the pool with in a wind instrumen . A. Typ

e of reed use . B. Effective length of the tube. C humidity of the air
Physics
2 answers:
BlackZzzverrR [31]2 years ago
5 0

The effective length of the tube is responsible for determining the frequency of vibration of the air column in the tube within a wind instrument.

VladimirAG [237]2 years ago
3 0

Answer;

B. Effective length of the tube.

<h3><u>Explanation;</u></h3>
  • <u><em>Most wind instruments are of either the open-open tube or the open closed tube type. Open ends of the tubes makes contact with the outside, atmospheric air.</em></u>
  • At an open end, when the air is disturbed in the wind instruments, the air vibrates with a variety of frequencies, however the frequencies that correspond to the natural frequencies will persist.
  • <em><u>Effective Length of the tube is responsible for determining the frequency of vibration of the air column in the pool with in a wind instrument.</u></em>
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Give your answer with solution(Easy Question)
Furkat [3]

Volume of any rectangular prism is (length) x (width) x (height).

The box in the picture is definitely a rectangular prism, so its volume is

(length) x (width) x (height) .

That's (4.0 cm) x (6.0 cm) x (2.0 cm) = 48 cm³ .

So the volume of the box is 48 cm³ fer sher, but that's NOT the preferred answer to this question.  If you take your time and read all the fine print carefully, you'll see that this sneaky question wants the answer in units of meter³ .  In order to produce the answer that it's fishing for, YOU have to be sneaky too.  You have to convert units, either before you start doing the calculating, or else convert the units of your result before you choose the answer from the list.

Before you calculate: Convert the given dimensions to (meters).  Then

Volume = (0.04 m) x (0.06 m) x (0.02 m)

Volume = 0.000048 m³

<em>Volume = 4.8 x 10⁻⁵ m³</em>


After calculating but before picking the answer:

Volume = (4.0 cm) x (6.0 cm) x (2.0 cm)

Volume = (48 cm³)

Convert:

Volume = (48 cm³) x (1 meter / 100 cm)³

Volume = (48 cm³) x (1 meter³ / 10⁶ cm³)

Volume = (48 cm³ meter³ / 10⁶ cm³)

Volume = 48 x 10⁻⁶ m³

or

<em>Volume = 4.8 x 10⁻⁵ m³</em>

This is exactly the same number as 48 cm³, but this is the way they want to see it, and 48 cm³ isn't.  So you have to select choice - <em>D .</em>


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3 years ago
If the velocity of an object is zero at one instant, what is true about the acceleration of that object
Charra [1.4K]

Answer:

I. The acceleration could be positive.

II. The acceleration could be zero.

III. The acceleration could be negative.

Explanation:

Velocity can be defined as the rate of change in displacement (distance) with time. Velocity is a vector quantity and as such it has both magnitude and direction.

Mathematically, velocity is given by the equation;

Velocity = \frac{distance}{time}

If the velocity of an object is zero at one instant, then the acceleration of that object may have the following characteristics;

I. The acceleration could be positive.

II. The acceleration could be zero.

III. The acceleration could be negative.

In physics, acceleration can be defined as the rate of change of the velocity of an object with respect to time.

This simply means that, acceleration is given by the subtraction of initial velocity from the final velocity all over time.

Mathematically, acceleration is given by the equation;

Acceleration (a) = \frac{final \; velocity  -  initial \; velocity}{time}

a = \frac{v  -  u}{t}

Where,

a is acceleration measured in ms^{-2}

v and u is final and initial velocity respectively, measured in ms^{-1}

t is time measured in seconds.

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2 years ago
10.A car moving at 18 m/s accelerates at -2.5 m/s² as it approaches a stop sign.
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Answer:

Explanation:the time taken to stop is 7seconds

The distance traveled by the car as it breaks is 63m

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2 years ago
Answer all questions will mark as brainiest
Drupady [299]
11:C) sound travels fastest in solids
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3 years ago
A wave of amplitude 20mm has intensity Ix. Another wave of the same frequency but of amplitude 5mm has an intensity Iy.
Alexeev081 [22]

Answer:

(C) 16

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The amplitude of second wave (s₂) = 5 mm

Intensity of first wave = Iₓ

Intensity of second wave = I_y

The intensity associated with a wave depends on the amplitude of the wave.

The intensity (I) is directly proportional to the square of the amplitude (s) of the wave and is expressed as:

I=ks^2\\Where\ k\to constant\ of\ proportionality

Now, the intensities of the two waves are given as:

I_x=ks_1^2=k(20)^2\\\\I_y=ks_2^2=k(5)^2

Dividing both the intensities, we get:

\frac{I_x}{I_y}=\frac{k(20)^2}{k(5)^2}\\\\\frac{I_x}{I_y}=\frac{400}{25}\\\\\frac{I_x}{I_y}=16

Therefore, the option (C) is correct.

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2 years ago
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