Physics, 27.12.2019 10:31 rniadsharri16

Aray of light is traveling from water into a diamond. upon hitting the diamond, a light ray bends toward the normal. with this information, what can you say about the speed of light as it passes from water into a diamond?

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As the light pass through different media, it experiences a refraction. This is a phenomenon where the speed and direction of light changes. If the ray of light moves towards the normal line, the angle is decreased. So, is the speed of that light.

Answer from: BlackMilkTea

The speed of light in diamond is less than the speed of light in water

Explanation:

Refraction is the phenomenon that occurs when light (or another type of wave) moves from one medium to another medium, crossing their interface.

When this occurs, the speed of the wave (as well as its direction) changes, according to Snell's law:

$n_1 sin \theta_1 = n_2 sin \theta_2$

where

n1 and n2 are the refractive index of the two mediums

$\theta_1, \theta_2$ are the angles that the light forms with the normal to the boundary between the two mediums, in the first and the second medium respectively

Moreover, the index of refraction is defined as:

$n=\frac{c}{v}$

where c is the speed of light in vacuum and v is the speed of light in the medium we are considering.

Substituting this last formula into Snell's law, we get:

$\frac{c}{v_1} sin \theta_1 = \frac{c}{v_2} sin \theta_2\\\frac{sin \theta_1}{v_1}= \frac{sin \theta_2}{v_2}$

where in this problem, "1" refers to water and "2" refers to diamond.

We can re-write the equation as follows:

$\frac{sin \theta_2}{sin \theta_1}=\frac{v_2}{v_1}$

The problem tells us that when moving through diamond, the light ray bends toward the normal: this means that the angle in diamond, $\theta_2$ , is smaller than the angle in water, $\theta_1$ . So we have

$\frac{sin \theta_2}{sin \theta_1}$

which means

$\frac{v_2}{v_1}$

And therefore,

v_2 < v_1

so the speed of light in diamond is less than the speed of light in water.

Answer from: Quest

answer: i think he can see forward ten seconds and move forward ten seconds but giorno can undo his actions with ger.

explanation:

Answer from: Quest

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

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Aray of light is traveling from water into a diamond. upon hitting the diamond, a light ray bends to...