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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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How does the gravitational force between two objects change if the distance between the objects doubles?
Ymorist [56]

if the distance between the objects is doubled the force is reduced by a factor of 4

<h3>Whats is gravitational force?</h3>

Gravitational force is the force of attraction between objects in the universe.

f = G * m1 * m2 / r^2

f = gravitational force

G = gravitational constant

m1 = mass of object 1

m2 = mass of object 2

r = distance between the objects

From the formular, the gravitational force and the distance is an inverse relationship so increasing the distance by a factor results to reduction of the force by the square of the factor. hence doubling the distance which is distance mutiplied by 2 will lead to reduction of the force by 2^2 = 4

Therefore: The force decreases by a factor of 4.

hope it helps

4 0
2 years ago
HELP PLEASE ASAP !!!!Question 5 of 15
lesantik [10]
I think the answer is C
6 0
3 years ago
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Two cars leave Calgary at the same time, travelling in opposite directions. Their average speeds differ by 5 km/h. After 2 h, th
dimulka [17.4K]
Let the first car's average speed be x

The second car's speed would be x+5

2(x+(x+5))=210

2x+5=105

2x=100

x=50

So the speed of the slower car is 50mph, and the speed of the faster car is 55mph


8 0
3 years ago
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A person's speed around the Earth is faster at the poles than it is at the equator.
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Answer:

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6 0
2 years ago
A car of mass m goes around a banked curve of radius r with speed v. If the road is frictionless due to ice, the car can still n
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Answer:

horizontal component of normal force is equal to the centripetal force on the car

Explanation:

As the car is moving with uniform speed in circle then the force required to move in the circle is towards the center of the circle

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Now it is given that car is moving on the ice surface such that the friction force is zero now

so here we can say that centripetal force is due to component of the normal force which is due to banked road

Now we have

N sin\theta = \frac{mv^2}{R}

N cos\theta = mg

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