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ser-zykov [4K]
3 years ago
11

Hi can anyone help with my two questions posted a little while ago. I need to know ASAP :)

Physics
1 answer:
mihalych1998 [28]3 years ago
5 0
What's the questions !!
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A black, totally absorbing piece of cardboard of area a = 2.1 cm2 intercepts light with an intensity of 8.8 w/m2 from a camera s
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Answer:

The value of radiation pressure is 2.933 \times 10^{-8} Pa

Explanation:

Given:

Intensity I = 8.8 \frac{W}{m^{2} }

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From the formula of radiation pressure in terms of intensity,

   P = \frac{I}{c}

Where P = radiation pressure, c = speed of light

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 c = 3 \times 10^{8} \frac{m}{s}

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  P = \frac{8.8}{3 \times 10^{8} }

  P = 2.933 \times 10^{-8} Pa

Therefore, the value of radiation pressure is 2.933 \times 10^{-8} Pa

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