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Nezavi [6.7K]
4 years ago
5

Does anyone know what these three are? I need help!

Physics
1 answer:
VashaNatasha [74]4 years ago
3 0

Answer:

1. A

2. C

3. A

Explanation:

I'm so sorry if I am wrong

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What is the difference between 5 mL of water and 5.0 mL of water?
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What is the intensity of a sound with a sound intensity level (SIL) 67 dB, in units of W/m^2?
vfiekz [6]

Answer:

The intensity of sound (I) = 3.16 x 10⁻⁶ W/m²

Explanation:

We have expression for sound intensity level (SIL),

              L=10log_{10}\left ( \frac{I}{I_0}\right )

Here we need to find the intensity of sound (I).

               L=10log_{10}\left ( \frac{I}{I_0}\right )\\\\log_{10}\left ( \frac{I}{I_0}\right )=0.1L\\\\\frac{I}{I_0}=10^{0.1L}\\\\I=I_010^{0.1L}

Substituting

          L = 67 dB and I₀ = 10⁻¹² W/m² in the equation

          I=I_010^{0.1L}=10^{-12}\times 10^{0.1\times 65}\\\\I_0=10^{-12}\times 10^{6.5}=10^{-5.5}=3.16\times 10^{-6}W/m^2

The intensity of sound (I) = 3.16 x 10⁻⁶ W/m²

8 0
3 years ago
How much work is done on 10.0C of charge to move it through a potential difference of 9V in 10s?
Norma-Jean [14]
Here is the link with ans on it
https://moorsscience.wikispaces.com/file/view/chapter+12+answers.pdf
hope it helps
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3 years ago
WILL GIVE BRAINLEST!!
polet [3.4K]
I think the answer is c
7 0
4 years ago
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