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matrenka [14]
3 years ago
14

laser with wavelength 633 nm illuminates a single slit of width 0.185 mm. The diffraction pattern is seen on a screen. The dista

nce between the first and second dark fringes is 8.25 mm. How far is the screen from the slit
Physics
1 answer:
soldier1979 [14.2K]3 years ago
5 0
A helium-neon laser (λ = 633 nm) illuminates a single slit and is observed on a screen 1.30 m behind the slit. The distance between the first and second minima in the diffraction pattern is 3.95 mm .
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Number value and direction

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8125

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A solid concrete block weighs 150. N and is resting on the ground. Its dimensions are 0.400 m ✕ 0.200 m ✕ 0.100 m. A number of i
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27 blocks

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P = F/A

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Now , we need to know the number of blocks needed to exert a pressure that equals at least 2 atm. To know this, we should rewrite the equation. We know that certain number of blocks, with the same weight and dimensions are putting one after one over the first block, so we can say that:

P = W/A

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n would be the number of blocks, and W1 the weight of the block.We have all the data, and we need to calculate the area of the block which is:

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