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igor_vitrenko [27]
3 years ago
13

two Sound Waves Traveling In The Same Medium Interfere With Each Other. The Compression Of One Wave Falls On The Compression Of

The Other Wave. What Can You Say About The Resultant Sound?
Physics
2 answers:
meriva3 years ago
6 0

You can't say anything about them unless their frequencies are the same.
In that case, you've already said that they're in phase, so their interference
is constructive. The resultant sound is louder than either wave alone. If their
amplitudes also happen to be the same, then the resultant sound is double
the intensity of either one alone (6 dB louder).


skad [1K]3 years ago
6 0

Answer:

A

Explanation:

Because no sound is heard.

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6 0
2 years ago
If the line spectrum of lithium has a red line at 670.8 nm. How much energy does a a photon with this wavelength have?
Colt1911 [192]
We already know the formula for finding the energy of a photon with this wavelength as:
<span>E = ħc / λ
</span>The information's that we already know are:
h = Plancks constant
   = <span>6.626x10^-34 Js
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Then
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5 0
3 years ago
A flat, 179 179 ‑turn, current‑carrying loop is immersed in a uniform magnetic field. The area of the loop is 4.41 cm 2 4.41 cm2
Alecsey [184]

Answer:

The value of the magnetic field is  B =0.1423T

Explanation:

From the question we are told that

              The number of turns is  N = 179

               The area of the loop is A = 4.41cm^2 = \frac{4.41}{10000} = 0.000414m

                 The angle is  \theta  = 59^o

               The torque  is  \tau =2.25 * 10^{- 5} N

                The current is  I = 2.49\ mA

The torque acting on the current carry loop is  mathematically represented as

                     \tau = B * I * N * A * sin \theta

Where is the magnitude of the magnetic filed

Making B the subject

                     B= \frac{\tau}{I * N * A * sin\theta}

Substituting values

                    B = \frac{2.25*10^{-5}}{2.49*10^{-3} * 179 * 0.000414 * sin (59)}

                       =0.1423 T

4 0
3 years ago
A high fountain of water is located at the center of a circular pool. Not wishing to get his feet wet, a student walks around th
Alisiya [41]

Answer:

The fountain is 3.43 m high.

Explanation:

Circumference of the pool = 15 m.

C = 2\pir

where C is the circumference and r its radius.

r = \frac{C}{2\pi }

 = \frac{15}{2(\frac{22}{7}) }

r = 2.3864

radius of the pool = 2.40 m

So that the height of the fountain, h, can be determined by applying trigonometric function.

Tan θ = \frac{opposite}{adjacent}

Tan 55 = \frac{h}{2.4}

h = Tan 55 x 2.4

  = 1.4282 x 2.4

  = 3.4277

h = 3.43 m

The height of the fountain is 3.43 m.

8 0
2 years ago
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