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Lerok [7]
2 years ago
5

Plz answer fast the question

Physics
1 answer:
alexgriva [62]2 years ago
3 0

Answer:

Angle of incidence = 20°

Angle of reflection = 20°

Explanation:

Applying,

The first Law of Refraction: The incident ray, the reflected ray and the normal at the point of incidence all lies in the plane.

From the diagram,

Angle of incidence = 90-70

Angle of incidence = 20°

From the law of reflection,

Angle of incidence = Angle of reflection

Therefore,

Angle of reflection = 20°

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Answer: 321 J

Explanation:

Given

Mass of the box m=3\ kg

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3 years ago
A 1.0-kg block of aluminum is at a temperature of 50 Celsius. How much thermal energy will it lose when it’s temperature is redu
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Answer:

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