1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Brums [2.3K]
2 years ago
9

A brand of earplugs reduces the sound intensity level by 27 dB.By what factor do these earplugs reduce the acoustic intensity?

Physics
1 answer:
Fofino [41]2 years ago
3 0

Answer:

Explanation:

27dB = 2.7 B

So I / I₀ = 10⁻²°⁷ ,  I₀ is intensity of main sound and I is intensity after reduction.

= 1.99 X 10⁻³

So intensity will reduce by 1.99 X 10⁻³  .

You might be interested in
Name TWO WEAKNESSES of the model pictured below
Nikolay [14]

Answer:

Here are a few:

1) The orbital radius of these planets is ridiculously small an in no way representative of their actual radii.

2) The planets will only line up like that once every 5200 years, making this very unrepresentative of their usual relations - although this does make their order in distance from the sun.

3) The nebulae, comet, lens flare,  and other junk in the background is incorrect.

4) If this is meant as a representation of the planets, then Pluto should not be there as it is now considered a planetoid.

5) The planets are incorrectly scaled both to each other and to the sun.

7 0
2 years ago
Optical tweezers use light from a laser to move single atoms and molecules around. Suppose the intensity of light from the tweez
WITCHER [35]

Answer:

Explanation:

a )

If it is totally absorbed pressure is calculated as follows .

Pressure = I / c where I is intensity of light falling .

= 1000 / 3 x 10⁸

= 3.33 x 10⁻⁶ N / m²

b ) weight of tritium atom

=  3 x 1.67 x 10⁻²⁷ kg

acceleration = force / mass

=    3.33x 10⁻⁶ / 3 x 1.67 x 10⁻²⁷

= .6646 x 10²¹ m /s²

= 66.46 x 10¹⁹ m / s²

7 0
2 years ago
How is the radiating electric field (or electromagnetic signal) produced when radio stations broadcast
Natali5045456 [20]

Answer:

Radio stations have dipole type antennas

this field increases in intensity and propagates outwards,

Explanation:

Radio stations have dipole type antennas, that is, all sides are isolated from each other, when the AC signal from the radio station arrives, the lcharge begins at times and by the Lens law a field appears that opposes this movement, this field increases in intensity and propagates outwards, when the voltage reaches a maximum, the generated wave also reaches the maximum, now the incident wave begins to decrease, an electric hand appears to oppose this prisoner, and in this way a cap is created. electric .

5 0
3 years ago
6x10^8 kg<br> —————<br> 2x10^4 m^3
barxatty [35]
The answer to the question

4 0
3 years ago
Please help fast i need urgent
Sloan [31]
Is there more information ?
5 0
3 years ago
Other questions:
  • Water and cooking oil have the same density because they're both liquids. <br> TRUE OR FALSE
    9·2 answers
  • When an object with a negative charge is moved from point A to point B through an external electrical field, it gains electrical
    15·1 answer
  • What does temperature measure?
    10·1 answer
  • Light travels in...<br> A) electromagnetic waves B) electrons <br> C) photons <br> D) a and c
    13·1 answer
  • Is time a <br><br> vector,<br> scalar,<br> both,<br> neither
    15·1 answer
  • Find an expression for the electric field e⃗ at the center of the semicircle. hint: a small piece of arc length δs spans a small
    12·1 answer
  • On my bike I was able to travel 40 miles in one hour from this information we can determine the bikes
    13·1 answer
  • The force of gravity acting upon an object is the objects mass. True or false
    6·1 answer
  • wich statement is true about the law of conservation of energy for an object released from a certain height above the ground​
    10·1 answer
  • Hello please help i’ll give brainliest
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!