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nlexa [21]
3 years ago
13

When students work in a chemistry lab, the location of which item would be the most important for each student to know?

Physics
2 answers:
siniylev [52]3 years ago
7 0
Fire extinguisher and eye wash station? hope that helps
denis-greek [22]3 years ago
4 0

Answer: safety shower

Explanation: edge2020 answer

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Light of wavelength 500 nm is incident perpendicularly from air on a film 10-4cm thick and of refractive index 1.375. Part of th
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Answer

given,

wavelength (λ)= 500 n m

thickness of film= 10⁻⁴ cm

refractive index = μ = 1.375

distance traveled is double which is equal to 2 x 10⁻⁴ cm

a) Number of wave

     N = \dfrac{d}{\mu\lambda}

     N = \dfrac{2 \times 10^{-6}}{1.375\times 500 \times 10^{-9}}

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           N = 3

b) phase difference is equal to

Reflection from the first surface has a 180° (½λ) phase change.

There is no phase change for the 2nd surface reflection and there is no phase difference for the 2nd wave having traveled an exact whole number of waves.

net phase difference = 180^0\times \dfrac{3}{2}

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3 years ago
Celina has a water sample that’s contaminated with salt and microorganisms. Which method should she use to purify the water?
Dmitry_Shevchenko [17]

Celina should perform the following method to get pure water:

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