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Karo-lina-s [1.5K]
3 years ago
7

A solid piece of clear transparent material has an index of refraction of 1.61. If you place it into a clear transparent solutio

n and it seems to disappear, approximately what is the index of refraction of the solution
Physics
1 answer:
NISA [10]3 years ago
7 0

Answer:

1.61

Explanation:

According to Oxford dictionary, refractive index is, ''the ratio of the velocity of light in a vacuum to its velocity in a specified medium.''

If the clear transparent solid disappears when dipped into the liquid, it means that the index of refraction of the solid and liquid are equal.

Hence, when a transparent solid is immersed in a liquid having the same refractive index, there is no refraction at the boundary between the two media. As long as there is no refraction between the two media, the solid can not be seen because the solid and liquid will appear to the eye as one material.

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To summarise the findings, in 2012, there is a significant and positive relationship between higher education level and income (i.e., higher education qualifications lead to higher income). ... Next, we examine the incomes of between bachelor's degree and graduate degree holders.
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3 years ago
Zirconium has an atomic number of 40. How many neutrons are there in an isotope of zirconium-92? A. 40 B. 52 C. 92 D. 132
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B. 52. 40 protons plus 52 neutrons, adds up to 92.
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3 years ago
You have a 1.8m long copper wire. You want to make an N-turn current loop that generates a 2.0mT magnetic field at the center wh
NikAS [45]

Answer:

The diameter is  0.022m.

Explanation:

The magnetic field B at the center of the coil is given by

(1). B = \dfrac{\mu_0 NI}{d}

where \mu_0 = 1.26*10^{-6} m\:kg\:s^{-2} A^{-2} is the magnetic constant, I is the current, N number of coils, and d is the diameter of the coil.

Now, if we call L the length of the wire, then it must be true that

\pi dN = L <em>(this says </em>N<em> coil circumferences (</em>c=\pi d<em>) fit into </em>L<em> )</em>

\therefore N = \dfrac{L}{\pi d }

putting this into equation (1) we get:

B = \dfrac{\mu_0 IL }{\pi d^2}

solve for d:

\boxed{d = \sqrt{\dfrac{\mu_0I L }{\pi B} }}

putting in the numerical values

\mu_0 = 1.26*10^{-6} m\:kg\:s^{-2} A^{-2}

I =1.3A

L= 1.8m

B =2.0*10^{-3}T

we get:

d = \sqrt{\dfrac{(1.26*10^{-6})(1.3) *1.8 }{\pi (2.0*10^{-3})} }

\boxed{d = 0.022m}

4 0
4 years ago
A visitor is staying in a tent that is 11 kilometers west of the closest point on a shoreline to a coral reef. The coral reef is
Vaselesa [24]

Answer:

Explanation:

From the question, it says that their tent is 11 km away from the shore which is also 3 km away from the coral reef. Essentially, the tent us 11 + 3 km away from the coral reef, and that's 14 km. He has to run at a rate of 7 know to cover an 11 km length and swim at 2 kmph to cover a 3 km length.

All the visitor needs to do is run more than 7 kmph to reduce the days time. For example, running at 11 kmph takes him or her exactly 1 hour to reach the shore, before taking another swim of about an hour to reach the reef

4 0
3 years ago
List 3 process that can change matter from one state to another​
olya-2409 [2.1K]

Answer:

evaporation, melting, freezing

Explanation:

matter is a solid, gas, or liquid

evaporation turns a liquid to gas

melting changes a solid to liquid

freezing changes a liquid to a solid

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3 years ago
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