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4 years ago

When light passes from a faster medium into a slower medium, which of the following explains what will occur?

Physics

2 answers:

tester [92]4 years ago

7 0

Answer:

It would be B

Explanation:

beks73 [17]4 years ago

5 0

When light passes from a faster medium into a slower medium, light will be refracted toward a line drawn perpendicular to the point of refraction. (B)

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If 20 beats are produced within one second, which of the following frequencies could possibly be held by two sound waves traveli

NeTakaya

Answer:

D. 22 Hz and 42 Hz

Explanation:

When two waves with different frequency travelling in the same medium meet each other, they produce an interference pattern called beat.
The frequency of the beat produced is equivalent to the difference between the individual frequencies of the two waves involved.
Therefore; in this case since the frequency of the beat is 20 Hz, that is from 20 beats per second.
We need to find a pair from the choices whose frequency difference is 20 Hz.
This happens to be choice D. 22 Hz and 42 Hz, that is 42 Hz - 22 Hz = 20 Hz

8 0

3 years ago

Read 2 more answers

How does an increase in greenhouse gases in the atmosphere cause an increase in global temperature?

daser333 [38]

Answer:

<h2>Greenhouse gases absorb and emit radiation and less heat dissipates to space</h2>

Explanation:

when heat is trapped it is conducted to the trapped area and gradually heats up its surrounding

8 0

3 years ago

Photoelectrons are observed when a metal is illuminated by light with a wavelength less than 383 nm. What is the metal's work fu

Ulleksa [173]

Answer:

Work function of the metal is 3.24 eV.

Explanation:

It is given that,

Wavelength, $\lambda=383\times 10^{-9}\ m$

Let W is the work function of the metal. It is given by using Einstein's photoelectric effect equation. It is given by :

$W=\dfrac{hc}{\lambda}$

$W=\dfrac{6.63\times 10^{-34}\times 3\times 10^8}{383\times 10^{-9}}$

$W=5.193\times 10^{-19}\ J$

Since, $1\ eV=1.6\times 10^{-19}\ J$

So, W = 3.24 eV

So, the work function of the metal is 3.24 eV. Hence, this is the required solution.

3 0

3 years ago

Read 2 more answers

Can you explain how population changes in size

geniusboy [140]

Answer:

The population growth rate is the rate at which the population changes in size.

Explanation:

The rate of change is determined by subtracting the number of people that leave the population, through death or emigration, from the number of individuals that enter the population, through birth or immigration.

7 0

3 years ago

Please help with last two questions please

Brrunno [24]

Answer:

I know only answer second.

Explanation:

An objective sports and heigh

a lens produces its image 12 cm high.

so the formula of magnification is image height upon object height.So,

12/4=3 Answer

hope it helps

6 0

3 years ago