Physics, 03.08.2019 10:30 105001038

An incident ray strikes a piece of diamond at an angle of 40.5 degrees. the index of refraction of air is 1.0003 and the index of the refraction of diamond is 2.42. what is the angle of refraction?

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Answer from: allieballey0727

The angle of refraction is 15.6 deg.

When a ray of light passes from medium 1 to medium 2, the refractive index of medium 2 with respect to 1 is the ratio of the absolute refractive index of medium 2 and medium 1

$_1n_2 =\frac{n_2}{n_1}$

When light passes from air into diamond, with the given values of refractive indices,

$_an_d =\frac{n_d}{n_a} =\frac{2.42}{1.0003} =2.4193$

According to Snell's law,

$_an_d=\frac{sini}{sinr} \\ sinr=\frac{sini}{_an_d} =\frac{sin(40.5)}{2.4193}=0.2684\\ r=arcsin(0.2684)=15.57 deg$

The angle of refraction is 15.6 deg

Answer from: Quest

the grams of oxygen gas that can be produced is 20.6 grams of o₂

calculation

2liclo₃ → 2 licl + 3 o₂

step 1: find the moles of liclo₃

moles = mass÷ molar mass

from periodic table the molar mass of liclo₃ =6.9 +35.5 +(16 x3) =90.4 g/mol

moles=38.7 g÷90.4 g/mol=0.4281 moles

step 2: use the mole ratio to calculate the moles of o2

from equation above, liclo₃: o₂ is 2: 3

therefore the moles of o₂=0.4281 moles x3/2 =0.6422 moles

step 3: find mass of o₂

mass= moles x molar mass

from periodic table the molar mass of o₂ = 16 x2= 32 g/mol

mass=0.6422 moles x 32 g/mol = 20.6 grams of o₂

Answer from: Quest

Neptune is the eighth planet from the sun. it was the first planet to get its existence predicted by mathematical calculations before it was actually seen through a telescope on sept. 23, 1846. irregularities in the orbit of uranus led french astronomer alexis bouvard to suggest that the gravitational pull from another celestial body might be responsible. german astronomer johann galle then relied on subsequent calculations to spot neptune via telescope. previously, astronomer galileo galilei sketched the planet, but he mistook it for a star due to its slow motion. in accordance with all the other planets seen in the sky, this new world was given a name from greek and roman mythology — neptune, the roman god of the sea.

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An incident ray strikes a piece of diamond at an angle of 40.5 degrees. the index of refraction of a...

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