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zheka24 [161]
3 years ago
14

For using the law of reflection and Snell's law for refraction, the angles are measured Group of answer choices between the surf

ace and the light ray between the normal to the surface and the light ray either way of measuring the angle will work for both reflection and refraction
Physics
1 answer:
Scrat [10]3 years ago
8 0

Answer:

correct answer is the c

Explanation:

The laws of optical geometry are the law of reflection and refraction, in them the relationship between the incident angles and reflected or transmitted by a given surface is established, in these laws it is not specified how the angles should be measured by which they could measure as follows

.- between the beam and the surface

.- between lightning and normal, the most used

Let's check the answers

a) True.

b) True

c) True

We see that the three answers are true, but the answer c involves the other two, so the correct answer is the c

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The Event Horizon Telescope needs a 22 micro-arcsecond resolution to view the event horizon regions around black holes. If the a
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Answer:

14869817.395 m

Explanation:

\theta=22 microarcsecond

λ = Wavelength = 1.3 mm

Converting to radians we get

22\times 10^{-6}\frac{\pi}{180\times 3600}\ radians

From Rayleigh Criterion

\theta=1.22\frac{\lambda}{D}\\\Rightarrow D=1.22\frac{\lambda}{\theta}\\\Rightarrow D=1.22\frac{1.3\times 10^{-3}}{22\times 10^{-6}\frac{\pi}{180\times 3600}}\\\Rightarrow D=14869817.395\ m

Diameter of the effective primary objective is 14869817.395 m

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Carbohydrates, fats, proteins: These organic molecules ALL have this element in common. This element can form multiple bonds, an
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Carbon is the answer. IF oxygen were on the list it would also be correct but for this its Carbon<span />
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3 years ago
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Nervous tissue makes up most of the
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, Nervous tissue is composed of two types of cells, neurons and glial cells. Neurons are the primary type of cell that most anyone associates with the nervous system. They are responsible for the computation and communication that the nervous system provides.

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Two sound waves have equal displacement amplitudes, but wave 1 has two-thirds the frequency of wave 2. What is the ratio of the
zlopas [31]

Answer:

\dfrac{I_1}{I_2}=\dfrac{4}{9}

Explanation:

c = Speed of wave

\rho = Density of medium

A = Area

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\nu_1=\dfrac{2}{3}\nu_2

Intensity of sound is given by

I=\dfrac{1}{2}\rho c(A\omega)^2\\\Rightarrow I=\dfrac{1}{2}\rho c(A2\pi \nu)^2

So,

I\propto \nu^2

We get

\dfrac{I_1}{I_2}=\dfrac{\nu_1^2}{\nu_2^2}\\\Rightarrow \dfrac{I_1}{I_2}=\dfrac{\dfrac{2}{3}^2\nu_2^2}{\nu_2^2}\\\Rightarrow \dfrac{I_1}{I_2}=\dfrac{4}{9}

The ratio is \dfrac{I_1}{I_2}=\dfrac{4}{9}

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A tablet is made by crushing several chemicals, combining the chemicals as powders, and pressing the powders together to make a
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