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elena-14-01-66 [18.8K]
3 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]3 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]3 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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When you and a friend move a couch to another room you exert a force of 75 N over 5m how much work will you do
sesenic [268]

The work done is 375 J

Explanation:

The work done by a force in moving an object is given by

W=Fd cos \theta

where

F is the magnitude of the force

d is the displacement

\theta is the angle between the direction of the force and the displacement

In this problem,

F = 75 N is the force applied to the couch

d = 5 m is the displacement

Assuming the force applied to the couch is parallel to the motion, \theta=0

And so, the work done is

W=(75)(5)(cos 0)=375 J

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3 years ago
If a car increases its velocity from zero to 60 m/s in 10 seconds, its acceleration is
andrezito [222]
We know that a=vf_vi/t equals equation "a" . Where a is the acceleration of the body , vf is the final velocity , vi is the initial velocity and t is equal to time . Since vi equals o m/s , vf equals to 60 m/s and t equals 10 s. Put in equation "a". a=60-0/10 =6m/s2
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3 years ago
A 1500 kg truck is acted upon by a force that decreases its speed from 25 m/s to 15 m/s in 8 s. What is the magnitude of the for
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Answer:

F = 1,875 N

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force=

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and ∆V ----> change in velocity

( final velocity - initial velocity )

and m ----> is mass

then f =

\frac{1500 \times (25 - 15)}{8}

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If the current in a wire increases from 5 A to 10 A, what happens to its magnetic field? If the distance of a charged particle f
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(1) Doubling of the current through the wire will result in doubling of its magnetic  field.

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B = \frac{\mu\cdot I }{2\pi r}

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(2) Using the same formula as in (1), we can see that the magnetic field is inversely proportional to the radial distance from the wire. So, a particle at 20cm will experience half the magnitude compared to a particle at 10cm.

(3) Answer

If a particle with a charge q  moves through a magnetic field B with velocity v, it will be acted on by the magnetic force

F_m = B\cdot v\cdot q

So, a particle with charge -2uC will experience a magnetic force of same magnitude but opposite direction (and perpendicular to B) as compared to a particle with a charge of 2uC

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The two neutral atoms A and B have the same number of electrons and atomic number 11. So, the two elements are said to be same.

The electronic configuration of the element is the arrangement of the electrons in the atom of the element in energy levels, orbitals around the nucleus.

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The electronic configuration of atoms are given as

A = 1s² 2s² 2p⁶ 3s¹

B = 1s² 2s² 2p⁶ 5s¹

The number of electrons in both the elements is 11. Therefore, their atomic number is also the same i.e, 11. So, both the elements are the same.

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