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sp2606 [1]
3 years ago
5

Applications of infrared wave​

Physics
1 answer:
zavuch27 [327]3 years ago
5 0
Optical fibres, short range communication, electric cookers and infrared cameras/ security systems
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The time in hours it takes a satellite to complete an orbit around the earth varies directly as the radius of the orbit (from th
nikitadnepr [17]

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Taking 3960miles to be the radius of the earth, we use simple proportions to solve

(1500+3960)/(660+3960) × (32000/38000)× 13 = T in hours to complete orbit.

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If acceleration of a body starting from the rest is 0.5m/s^2 how long will it take the body to travel 400m(if u are genius answe
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Unlike matter, energy is not cycled through an ecosystem. true or false
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Vector sum of 15 m, East and 9 m, West is 24 m, East. True False
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False

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Because when you go through east

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What is the energy (in evev) of a photon of visible light that has a wavelength of 500 nmnm?
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<h3>Answer:</h3>
  • E≈2,5 eV
<h3>Explanation:</h3>

_______________

λ=500 nm = 500·10⁻⁹ m

c=3·10⁸ m/s

h=6,63·10⁻³⁴ J·s = 4,14·10⁻¹⁵ eV·s

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E - ?

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\displaystyle \boldsymbol{E}=h\nu =h \frac{c}{\lambda} =4,14\cdot 10^{-15} \; eV\cdot s\cdot \; \frac{3\cdot 10^8\; m/s}{500\cdot 10^{-9}\; m} =2,484\;  eV\approx \boldsymbol{2,5\; eV}

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2 years ago
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