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melomori [17]
3 years ago
6

Describe how absorption and scattering can affect a beam of light

Physics
1 answer:
Dovator [93]3 years ago
8 0
It can scatter the light in all different directions
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A sound has a sound level of 30 dB. Its intensity is what multiple of the standard reference level for intensities?
arsen [322]
<h2>Answer:</h2>

1000th multiple of the standard reference level for intensities.

<h2>Explanation:</h2>

The sound intensity level (β), measured in decibels, of a sound with an intensity of I is defined as follows;

β = 10 log (I / I₀)       --------------------(i)

Where;

I₀ = reference intensity

Given from the question;

β = sound level = 30dB

Substitute this value into equation (i) as follows;

30 = 10 log (I / I₀)

Divide both sides by 3;

3 = log (I / I₀)

Take antilog of both sides;

10^(3) = (I / I₀)

1000 = I / I₀

Solve for I;

I = 1000I₀

Therefore the intensity of the sound is 1000 times the standard reference level for intensities (I₀)

7 0
3 years ago
True or false, russian twists focus to strengthen the latissimus dorsi
Oliga [24]
The answer is true hope that helped!!
5 0
3 years ago
Read 2 more answers
An electric appliance is connected by wires to a 240-volt source of voltage. If the combined resistance of the appliance and wir
uranmaximum [27]
  • Voltage=V=240V
  • Resistance=R=12ohm
  • Current be I

Apply ohms law

  • V=IR
  • 240=12I
  • I=240/12
  • I=20A
6 0
2 years ago
A jeweler is determining the optical properties of an unknown blue gemstone. She uses an angle of incidence of 62°, and measures
Juliette [100K]

Answer:

n = 1.76

Explanation:

According to the rule of ( n1 sin theta1 = n2 sin theta2 )

we know both angles so we insert them to the law and apply n1 = 1

so 1/2 = n2 sin 62 and we get the final answer

3 0
3 years ago
A tool for studying motion is called?
kakasveta [241]

Answer:

phytochemical

Explanation:phytochemical is a tool for studying motion

8 0
3 years ago
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