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3 years ago

7

Which of the following experiments or phenomena provided evidence for the particle nature of light?

2 answers:

Marysya12 [62]3 years ago

8 0

<h3><u>Answer;</u></h3>

Expulsion of electrons with varying frequencies of light observed in the photoelectron effect.

<h3><u>Explanation</u>;</h3>

<em><u>The photoelectric effect supports a particle theory of light in that it behaves like an elastic collision between two particles, the photon of light and the electron of the metal.</u></em>
Albert Einstein observed the photoelectric effect in which ultraviolet light forces a surface to release electrons when the light hits. He explained the reaction by defining light as a stream of photons, or energy packets.

Dima020 [189]3 years ago

6 0

Answer:

Expulsion of electrons with varying frequencies of light observed in the photoelectron effect.

Explanation:

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In short-track speed skating, the track has straight sections and semi-circles 16 m in diameter. Assume that a 66 kg skater goes

kotykmax [81]

Answer:

a. 1,188 N

b. 1.836

Explanation:

The computation is shown below:

a. For horizontal force, first we need to find out the circular path radius which is shown below:

As we know that

$r = \frac{d}{2}$

$= \frac{16}{2}$

= 8m

Now the horizontal force is

$F = \frac{m\times v^2}{r}$

where,

m = 66 kg

v = 12 m/s

and r = 8 m

Now placing these values to the above formula

So, the horizontal force is

$F = \frac{66\times 12^2}{8}$

= 1,188 N

b. Now the ratio of force to the weight of skater is

$= \frac{1,188 N}{66\ kg \times 9.8m/s^{2}}$

= 1.836

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olya-2409 [2.1K]

Answer:

Explanation:

The difference between panda and rhino are :

<u>panda</u>

1. The giant panda, also known as the panda bear, is a bear native to South Central China

2. Their thick black and white fur equips them for life in cool forests

<u>Rhino</u>

1. There are 5 species of rhino.

2. Rhinos have poor vision

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jolli1 [7]

Answer:

Work is the change in energy and power is the rate of doing work.

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3 years ago