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3 years ago

Can somebody plz help me with this one the question is in the screen shot.

Physics

1 answer:

kolezko [41]3 years ago

5 0

this is in order.

LANDFILL

GROUNDWATER

PESTICIDE

FERTILIZER

HAZARDOUS WASTE

SEPTIC SYSTEM

SEEPAGE

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By what factor does the sound intensity increase if the sound intensity level increases from 60 db to 61 db?

tiny-mole [99]

Answer:

$\frac{I_{2}}{I_{1}} = 10^{0.1}$

Explanation:

The sound intensity level β can be mathematically defined as

$\beta(dB) = 10log_{10}(\frac{I}{I_{o} } )$

where $I_{o}$ is the reference intensity and is equal to $10^{-12}$ $W/m^{2}$ .

Now,

$\beta_{2} - \beta_{1} = 10 log\frac{I_{2} }{I_{o}} - 10 log\frac{I_{1} }{I_{o}}\\62-60= 10log(\frac{\frac{I_{2} }{I_{o} } }{\frac{I_{1} }{I_{o} } } )\\1=10log(\frac{I_{2} }{I_{1} } )\\\\\frac{I_{2} }{I_{1} }=10^{0.1}$

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4 years ago

Car headlights use concave mirrors. There's a concave mirror in the back of the headlight socket, and the actual light bulb is p

katen-ka-za [31]

Answer:

At the focus

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3 years ago

Mary and Jane are standing at each end of an ice board 1.0 m in length. 2 points

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Why is the position vs. time graph for an object in free fall a curve?

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Under free fall, the object is falling with a velocity that is increasing uniformly. Since the gradient of position-time graph reflects the velocity, the gradient is increasing, i.e. curve.

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d1i1m1o1n [39]

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