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Ilya [14]
2 years ago
5

Which two options are examples of waves reflecting?

Physics
2 answers:
Murljashka [212]2 years ago
7 0

Answer:

D

Explanation:

Your image in a mirror

Zinaida [17]2 years ago
3 0
I think the answer is b
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In separate experiments, a large number of particles (all with the same charge, but with a wide variety of masses and speeds) ar
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Answer:

  they have the same mass

Explanation:

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3 years ago
What is the energy of a rock with a mass of 10.2 kg on a cliff that is 300 m height?
Anuta_ua [19.1K]

The potential energy of the rock is 30,000 J

Explanation:

The mechanical energy of an object is equal to the sum of its gravitational potential energy (PE) and its kinetic energy (KE):

E=PE+KE

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PE is the gravitational potential energy, which is the energy possessed by the object due to its position in the gravitational field

KE is the kinetic energy, which is the energy possessed by the object due to its motion

In this problem, the rock is at rest, so its kinetic energy is zero:

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E=PE=mgh

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g=9.8 m/s^2 is the acceleration of gravity

h = 300 m is the height of the rock above the ground

Substituting and solving, we find

PE=(10.2)(9.8)(300)=30,000 J

Learn more about potential energy:

brainly.com/question/1198647

brainly.com/question/10770261

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4 0
3 years ago
The coefficient of cubical expansion of a substance depends upon
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β is defined as the <span>increase in volume per unit original volume per Kelvin rise in temperature.
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With the above definition, it is safe to assume that the <span>coefficient of cubical expansion of a substance depends on the change in volume, which also changes in response to the change in temperature. </span>
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3 years ago
When light passes from a faster medium into a slower medium, which of the following explains what will occur?
beks73 [17]

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. <em>(B)</em>

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