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2 years ago

According to the Law of Reflection, a light ray strikes a mirror ________________________________.

Physics

1 answer:

Leto [7]2 years ago

7 0

Answer:

bounces off the mirror at the same angle it hits the solid surface.

Explanation:

According to the Law of Reflection, a light ray strikes a mirror at the point of incidence bounces off the mirror at the same angle it hits the solid surface.

The incident ray and the reflected ray lie in the same plane

The angle of incidence is equal to the angle of reflection as a ray of light reflects off a solid surface.

So,

correct answer is ''bounces off the mirror at the same angle it hits the solid surface.''

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(4.31±0.38) million Solar masses.

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2 years ago

When solid surfaces slide over each other, the kind of friction that occurs is called_____ friction.

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Sliding Friction

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2 years ago

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Assume that the Deschutes River has straight and parallel banks and that the current is 0.75 m/s. Drifting down the river, you f

DedPeter [7]

Answer:

d = 142.5 m

Explanation:

This is a vector exercise. Let's calculate how much the boat travels in the 40s

d₀ = $v_{b}$ t

d₀ = 0.75 40

d₀ = 30 m

Let's write the kinematic equations

Boat

x = d₀ + $v_{b}$ t

x = 0 + $v_{h}$ t

At the meeting point the coordinate is the same for both

d₀ + $v_{b}$ t = $v_{h}$ t

t ( $v_{h}$ - $v_{b}$ ) = d₀

t = d₀ / ( $v_{b}$ - $v_{h}$ )

The two go in the same direction therefore the speeds have the same sign

t = 30 / (0.95-0.775)

t = 150 s

The distance traveled by man is

d = $v_{h}$ t

d = 0.95 150

d = 142.5 m

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3 years ago