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Lana71 [14]
2 years ago
5

Which frequency would be the third harmonic in a series for an open-pipe resonator if the fundamental is 440 Hz

Physics
1 answer:
Yanka [14]2 years ago
8 0

Answer:

1320 Hz

Explanation:

The third harmonic is given as 3fo, where fo is the fundamental frequency.

The fundamental frequency is the lowest frequency that can occur in a pipe. In an open pipe, both even and odd harmonics occur which are multiples of the fundamental frequency fo. Hence the harmonics in an open pipe are; 2fo, 3fo,4fo..... etc.

For the third harmonic; 3fo = 3 (440 Hz) = 1320 Hz

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What is night vision pls tell fast
mario62 [17]

Answer:

Night vision is when you can see in the dark or at night like owls

Explanation:

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2 years ago
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A formula for the normal systolic blood pressure for a man age a , measured in mmhg, is given as p=0. 006a2−0. 02a 120. Find the
djyliett [7]

The age of a man whose normal blood pressure measures 123 mm of hg

9 years

<h3>What is Quadratic equation ?</h3>

A quadratic equation as an equation of degree 2, meaning that the highest exponent of this function is 2. The standard form of a quadratic equation is y = ax^{2} + bx + c, where a, b, and c are numbers and a cannot be 0

P(A) = 0.006 a^{2} - 0.02a + 120

123 = 0.006- 0.02a + 120

0=0.006 a^{2} - 0.02a - 3

you can use the quadratic equation  formula to solve for the man's age.

A = (-b ± (\sqrt{b^{2} - 4*a*c})  ) / (2a)

A = (0.02 ±  \sqrt{(-0.02)^{2} - 4*0.006*(-3)}/ (2*0.006)

A = (0.02 ± \sqrt{0.0076}) / 0.012

A = 9 , -5.67

Age of the man will be 9 years

To learn more about quadratic equation  here

brainly.com/question/17177510?referrer=searchResults

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5 0
2 years ago
A 68 kg student runs up a flight of stairs that is 7 m high in 9 seconds. Calculate
NeTakaya
Power = Work/time
Work= energy
Potential energy =mxgxh
Power=mxgxh/t
Power=68x10x7/9
Power=529 watts
8 0
3 years ago
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A person walks 30m due north, then 50m at 35 degrees. Find their total displacement.
Harman [31]
Using the cosine rule (a^2 = b^2 + c^2 - 2bc cos A), we can work out the displacement:
Displacement = a
b = 30
c = 50
A = 180 - 35 = 145 degrees.

a^2= 900 + 2500 -1500*-0.81915...
      = 3400 + 1228.728...
      = 4628.72...
a = 68.034...
   = 68.0m (to 3s.f.).

To work out the angle from starting place, use another configuration of the cosine rule: 
cos(C)= \frac{a^{2} +b^{2}-  c^{2}  }{2ab}:
cos (C)= \frac{4628.72...+900-2500}{2*68*30}
           = 3028.7.../4080
           = 0.7423...
C = 42.069... degrees
   = 042 bearing
5 0
2 years ago
-g A diving board 3.00 m long is supported at a point 1.00 m from the end, and a diver weighing 500 N stands at the free end (Fi
Vera_Pavlovna [14]

Answer:

Explanation:

Let the force at the support end is R and at the left end is F.

According to the equilibrium condition

F + R = 280 + 500

F + R = 780 .... (1)

Take moments about G.

F x 1.5 + R x 0.5 = 500 x 1.5

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Subtract equation (1) from equation (2), we get

2F = 1500 - 780

F = 360 N

R = 780 - 360

R = 420 N

(a) Force at support is 420 N

(b) force at the left end is 360 N.

4 0
3 years ago
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