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Vilka [71]
3 years ago
6

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

effective length of the tube B. reed's frequency of vibration C. humidity of the air D. type of reed used
Physics
1 answer:
Vladimir [108]3 years ago
8 0

"A is correct answer." 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. "Hope this helps!" "Have a great day!" "Thank you for posting your question!"

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Water enters a cylindrical tank through two pipes at rates of 250 and 100 gal/min. If the level of the water in the tank remains
tester [92]

Answer:

The total amount of water that enters the tank is:

250 gal/min + 100 gal/min = 350gal/min.

Then, if the level of the water remains constant, this means that the water leaves the tank at a rate of 350gal/min.

We know that the diameter of the pipe is 8 inches, then the area of the pipe is:

A = pi*(d/2)^2 = 3.14*(4in)^2 = 50.24in^2

now, the flow can be calculated as:

Q = v*A = (velocity*area)

if we want to write our velocity in inches per minute, then we need to write the entering flow in cubic inches:

1 gallon = 231 in^3

then:

350gal/min = (350*231) in^3/min = 80,850 in^3/min.

Then the water that leaves the tank must be the same amoun, we have:

Q = 80,850 in^3/min. = v*A = v*50.24in^2

v =  (80,850in^3/min)/50.24in^2 = 1609.3 in/min.

The velocity of the flow leaving the tank is 1609.3 in/min.

3 0
3 years ago
Students in science class were asked to do an experiment with a can of soda. They placed an unopened can of soda on a digital sc
ElenaW [278]
Because the gas has left which once you open the soda can u can see the fizzy which is gas coming out of it
5 0
3 years ago
If the nucleus of an atom contains 12 protons how many electrons are there in a neutral atom why
kicyunya [14]
For a neutral atom number of electrons equals number of protons, in other for the net charge of the atom to be zero...
no. of electrons = 12
7 0
3 years ago
Calculate the kinetic energy in joules of a 1500 kg automobile moving at 19 m/s
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Using
KE = ½mv² = ½×1500×19×19 = 270750 joules
5 0
3 years ago
A vessel contains 1 mol of O2 and 2mol of He.what is the value of'Cp/Cv ' of the mixture?
BlackZzzverrR [31]
Oxygen is diatomic, so its degree of freedom, (f1)= 5,
also its number of moles, n1= 1


Helium is monoatomic, so its degree of freedom (f2)= 3 
and its number of moles given is, n2=2

Now using formula of effective degree of freedom of mixture, (f), we have: 

f= (f1n1+f2n2)/(n1+n2)
  =  (5*1 + 3*2)/ (1+3)
   =11/3
Also, from first law of thermodynamics;
U= n Cv. T = nRT(f2)
 or, Cv = R. (f/2) (n & T cancel)

We know f=11/6, 
substituting the value in above relation, we have:

Cv= R. 11/3*2
    = R. 11/6

Also, Cp-Cv = R
 or, Cp- R.(11/6)= R
or, Cp= R(11/6 )+1
          = 17/6 R

Therefore, Cp/Cv = 17/11
    




6 0
2 years ago
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