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tatyana61 [14]
3 years ago
10

Which statement best describes the relationship between an object's density and its index of refraction? as the optical density

increases, the refractive index decreases. as the tendency of the atoms to absorb energy before reemitting it increases, the refractive index increases. as the mass per unit volume of the substance increases, the refractive index decreases. as the physical density of the substance increases, the refractive index increases.
Physics
2 answers:
tino4ka555 [31]3 years ago
7 0

Answer:

as the tendency of the atoms to absorb energy before reemitting it increases, the refractive index increases.

Explanation:

The process of being absorbed and re-emitted by the atoms of the material decreases the speed of light from one end of the medium to the other. Therefore, the higher the absorption, the lower its speed in any medium with respect to the speed of light in a vacuum. The index of refraction indicates how slow the light in the material is compared to its speed in a vacuum. Thus, if the atoms absorb more energy before reemitting it increases, the refractive index increases

babunello [35]3 years ago
4 0
For future references, the answer is B.
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What percentage of the takeoff velocity did the plane gain when it reached the midpoint of the runway? a plane accelerates from
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vf =134.164 (m/s)  

At half runway the velocity of the plane is
v^{2}=2*5* \frac{1800}{2}=9000 ( \frac{m}{s} )^{2}
 
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Therefore at midpoint of runway the percentage of takeoff velocity is
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6 0
3 years ago
If ball C is 3 times the volume of ball D and ball D has 1/3 the mass of ball C, which has the greater density?
Alex Ar [27]

Answer:

They have same density

Explanation:

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d=\frac{m}{V}

where

m is the mass of the object

V is its volume

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d_c = \frac{m_c}{V_c}

We know that the volume of ball C is 3 times the volume of ball D, so

V_c = 3 V_d \rightarrow V_d = \frac{V_c}{3}

And we also know that ball D has 1/3 the mass of ball C:

m_d = \frac{m_c}{3}

So, the density of ball D is:

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Therefore, the two balls have same density.

6 0
3 years ago
9. A student walks 2 km in 30 minutes. What
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Answer:

4km/hr

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8 0
2 years ago
By including
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Answer:

Option D.

Data; changing attitudes, beliefs, or values

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When a speaker adds statistical data to prove the point, the audience's perception about things changes since the data implies that research has been conducted hence reliable. Consequently, the attitude of people and beliefs may change when such data is presented to them. Therefore, option D is correct.

3 0
3 years ago
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