2 years ago

Please help! this is timed!

Physics

2 answers:

sweet-ann [11.9K]2 years ago

7 0

Im pretty sure it is the first answer

Alik [6]2 years ago

5 0

Answer:

I'm positive that it is the first one. Sorry if it wrong.

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Yes or no

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Answer:

1. No, it is a colloid

2. Yes

Explanation:

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2 years ago

What distance does light travel in water, glass, and diamond during the time that it travels 1.0 m in vacuum? The refractive ind

lidiya [134]

Answer:

refractive index for water,glass,diamond are 0.752m, 0.667m, 0.413m respectively

Explanation:

refractive index (n) = $\frac{velocity of light in air/vacuum}{velocity of light in substance}$

velocity = $\frac{distance}{time}$

The time for travel is kept constant for all mediums.

refractive index (n) = $\frac{\frac{distance in vacuum}{time} }{\frac{distance in medium}{time} }\\ \\=\frac{distance in vacuum}{distance in medium}$

distance in medium = $\frac{distance in vacuum}{refractive index of medium}$

$S_{medium} = \frac{S_{vacuum} }{n_{medium} }$

For water, n= 1.33

$S_{water} = \frac{1 }{1.33}$

$S_{water} = 0.752m$

For glass, n=1.5

$S_{glass}= \frac{1 }{1.5}$

$S_{glass} = 0.667m$

For diamond, n= 2.42

$S_{diamond} = \frac{1 }{2.42}$

$S_{diamond} = 0.413m$

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3 years ago

Write down the principle of lever? <br>= ????

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The principle of a lever is when two equal forces act in opposite directions and ultimately come to a state of equilibrium if distanced properly

i hope that helps?^

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2 years ago

What kind of energy is stored in a flashlight battery enabling it to function? electrical energy, chemical energy, mechanical en

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Electrical Energy because the electrons in the battery travel from out one end of the battery through a circuit and back to the other end

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3 years ago

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which words are readable red word on white paper in red light or blue words on white paper in blue light

Angelina_Jolie [31]

Answer:

second

Explanation:

the first let's everything appear red, the send would produce black(-ish) words on paper that's appealing blue

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3 years ago

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