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Natali5045456 [20]
3 years ago
7

Refraction or the bending of waves takes place when a light wave changes A) color. B) frequency. C) intensity. D) speed.

Physics
2 answers:
dolphi86 [110]3 years ago
8 0

Answer:

Option (D)

Explanation:

Refraction is defined as the process by which a wave changes its direction of propagation and bends towards the normal when moves from a rarer medium to a denser medium. The light after entering the new medium bends towards the normal. This process takes place due to the change in the wave speed and also due to the change in its wavelength.

As the waves enter a denser medium (such as glass) from the rarer medium (such as air), the wave speed decreases and so its wavelength also decreases. The speed and wavelength here are directly proportional to each other. It is because there are more particles in the denser medium that obstructs the direction of wave propagation.

Thus, the correct answer is an option (D).

DENIUS [597]3 years ago
6 0
The answer is D. speed
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Answer:

The acceleration motorcycle

a = 5.13 m / s²

Explanation:

Now to determine the acceleration of the motorcycle

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∑ F = m * a

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a = [ 3168 N - 230 N - 286 kg * 9.8  m / s² * sin ( 31.6° ) ] / (286 kg)

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3 years ago
How does the temperature of water affect the speed of the sound waves?
nikitadnepr [17]

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Temperature is also a condition that affects the speed of sound. Heat, like sound, is a form of kinetic energy. Molecules at higher temperatures have more energy, thus they can vibrate faster. Since the molecules vibrate faster, sound waves can travel more quickly.

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3 years ago
Calculate the change in entropy that occurs in the system when 3.10 mole of isopropyl alcohol (C3H8O) melts at its melting point
ozzi

Answer:

3.10 mole of C3H8O change in entropy is 89.54 J/K

Explanation:

Given data

mole = 3.10 moles

temperature = -89.5∘C = -89 + 273 = 183.5 K

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solution

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put these value so we get change in entropy that is

change in entropy 5.3 ×10^3 / 183.5

change in entropy is 28.88 J/mol-K

so we say 1 mole of C3H8O change in entropy is 28.88 J/mol-K

and for the  3.10 mole of C3H8O change in entropy is 3.10 ×28.88  J/K

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3 years ago
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Therefore,
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