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Andrew [12]
3 years ago
14

A light ray strikes a flat, smooth, reflecting surface at an angle of 80° to the normal. What angle does

Physics
2 answers:
charle [14.2K]3 years ago
7 0

Answer:

80 angle of incidence=angle of reflection

Explanation:

viktelen [127]3 years ago
3 0

Answer:

80 angle of reflection!

Explanation:

Because it is a flat, smooth surface it will reflect like that of a normal plane mirror, so the angle of reflection will be equal to that of the angle of incidence!

Hope this helps you understands!

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An 85 kg man and his 35 kg daughter are sitting on opposite ends of a 3.00 m see-saw. The see-saw is anchored in the center. If
wolverine [178]

Answer:

0.54m

Explanation:

Step one:

given data

length of seesaw= 3m

mass of man m1= 85kg

weight = mg

W1= 85*10= 850N

mass of daughter m2= 35kg

W2= 35*10= 350N

distance from the center= (1.5-0.2)= 1.3m

Step two:

we know that the sum of clockwise moment equals the anticlockwise moment

let the distance the must sit to balance the system be x

taking moment about the center of the system

350*1.3=850*x

455=850x

divide both sides by  850

x=455/850

x=0.54

Hence the man must sit 0.54m from the right to balance the system

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Answer:

I think there six points

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It is called condensation. Hope this helped!
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The process by which metamorphic rock changes to igneous rock begins with?
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Melting, as igneous rock is magma or lava that has cooled and hardened.
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