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3 years ago

6

Two objects move toward each other and then repel. Two objects move toward each other and then attract. Which statement is true

about these scenarios?

1 answer:

Svet_ta [14]3 years ago

5 0

What are the statements? both of the objects do move attract and maybe that is the answer

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Sedaia [141]

Answer:

- Which of the following does not move as a transverse wave?

<em>B. sound waves</em>

because sound waves are longitudinal waves having compressions and rare factions.

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Which of the following does not make use of total internal reflection.

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3 years ago

Developed countries typically have _______.

Anna35 [415]

Answer:

Good government

Explanation:

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3 years ago

List 4 ways to separate mixtures

Sergeeva-Olga [200]

1.Paper Chromatography. This method is often used in the food industry. ...

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3 years ago

A light ray incident from medium 1 to medium 2, where n1>n2. When the incident angle exceed the critical angle ac, the refrac

vovikov84 [41]

Explanation:

(a)

Critical angle is the angle at the angle of refraction is 90°. After the critical angle, no refraction takes place.

Using Snell's law as:

$n_1\times {sin\theta_i}={n_2}\times{sin\theta_r}$

Where,

${\theta_i}$ is the angle of incidence

${\theta_r}$ is the angle of refraction = 90°

${n_2}$ is the refractive index of the refraction medium

${n_1}$ is the refractive index of the incidence medium

Thus,

$n_1\times {sin\ \theta_{critical}}={n_2}\times{sin\ 90^0}$

The formula for the calculation of critical angle is:

${sin\theta_{critical}}=\frac {n_2}{n_1}$

Where,

${\theta_{critical}}$ is the critical angle

(b)

No it cannot occur. It only occur when the light ray bends away from the normal which means that when it travels from denser to rarer medium.

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4 years ago

The amount of light that enters the pupil is controlled by the:<br> retina.<br> lens.<br> inis.

nignag [31]

Answer: The amount of light that enters the pupil is controlled by the Iris

Explanation:

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3 years ago