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Trava [24]
3 years ago
7

Einstein's theory of relativity is currently the best explanation of gravity. What is likely to happen to this theory in the fut

ure?
A.It will be replaced by a new theory when popular opinion changes.
B.It will become a law when there is consensus among scientists 
C.It will be replaced by a new theory when enough evidence is collected
D.It will become a law when enough evidence is supported
Physics
2 answers:
Trava [24]3 years ago
8 0
I believe the answer is C
koban [17]3 years ago
5 0

Answer:

D. It will become a law when enough evidence is supported.

Explanation:

Based on observations of natural phenomenon, a possible scientific explanation is written and tested. If the results are positive, it becomes a theory. If enough evidence is gathered and can be used generally, it becomes a law. For example Newton's laws of motion are used to describe all kinds of motion on Earth.

Einstein's theory of relativity cannot be tested directly but it's indirect evidence can be gathered because it deals with speeds near to the speed of light and space-time curve.

Thus, when the scientists would gather more evidence in future supporting Einstein's theory of relativity, it would be converted to law.

Option D. is correct.

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1. A listener stands 20.0 m from a speaker that pumps out music with a power output of 100.0 W.
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(1.a) The surface area being vibrated by the time the sound reaches the listener is 5,026.55 m².

(1.b) The intensity of the sound wave as it reaches the person listening is 0.02 W/m².

(1.c) The relative intensity of the sound as heard by the listener is 103 dB.

(2.a) The speed of sound if the air temperature is 15⁰C is 340.3 m/s.

(2.b) The frequency of the sound heard by the suspect is 614.3 Hz.

<h3>Surface area being vibrated</h3>

The surface area being vibrated by the time the sound reaches the listener is calculated as follows;

A = 4πr²

A = 4π x (20)²

A = 5,026.55 m²

<h3>Intensity of the sound</h3>

The intensity of the sound is calculated as follows;

I = P/A

I = (100) / (5,026.55)

I = 0.02 W/m²

<h3>Relative intensity of the sound</h3>

B = 10log(\frac{I}{I_0} )\\\\B = 10 \times log(\frac{0.02}{10^{-12}} )\\\\B = 103 \ dB

<h3>Speed of sound at the given temperature</h3>

v= 331.3\sqrt{1 + \frac{T}{273} } \\\\v = 331.3\sqrt{1 + \frac{15}{273} } \\\\v = 340.3 \ m/s

<h3>Frequency of the sound</h3>

The frequency of the sound heard is determined by applying Doppler effect.

f_o = f_s(\frac{v \pm v_0}{v \pm v_s} )

where;

  • -v₀ is velocity of the observer moving away from the source
  • -vs is the velocity of the source moving towards the observer
  • fs is the source frequency
  • fo is the observed frequency
  • v is speed of sound

f_0 = f_s(\frac{v-v_0}{v- v_s} )

f_0 = 512(\frac{340.3 - 10}{340.3 - 65} )\\\\f_0 = 614.3 \ Hz

Learn more about intensity of sound here: brainly.com/question/17062836

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The answer is A 0 degrees is the freezing point of water



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