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aev [14]
3 years ago
7

According to the law of reflection, the angle at which light strikes a surface is

Physics
1 answer:
Valentin [98]3 years ago
6 0

Answer:

Option a

Explanation:

The light that strikes this surface is referred to as the incident ray, and the light reflected is referred to as the reflected ray - as one might have guessed. Respectively, the angle with which the incident ray struck the surface is known as the " incident angle, " while the angle with which the reflected ray reflects off this surface is known as the " angle of reflection. "

_______________________________________________________

By the law of reflection, you would say that the incident angle is equal to the angle of reflection. Thus, the answer is option a.

<u><em>Hope that helps!</em></u>

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A model car is 29 cm in length. How many inches long is it?
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The internal energy of a system increases by 36 joules. The system does work using 17 joules. What amount of heat was added to t
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General internal energy expression:

Uf = (Ui-W) + Q

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Why is boiling water considered a physical change?
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a rugby player passes the ball 5.34 m across the field, where it is caught at the same height as it left his hand. at what angle
MakcuM [25]

Answer:

31.035^{\circ}

Explanation:

x = Displacement in x direction = 5.34 m

t = Time taken to travel the displacement

y = Displacement in y direction = 0

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g = Acceleration due to gravity = 9.81\ \text{m/s}^2

Displacement in x direction is given by

x=u\cos\theta t\\\Rightarrow t=\dfrac{5.34}{7.7 \cos\theta}

Displacement in y direction is given by

y=u\sin\theta t-\dfrac{1}{2}gt^2\\\Rightarrow 0=7.7\sin\theta \dfrac{5.34}{7.7\cos\theta}-\dfrac{1}{2}\times 9.81 (\dfrac{5.34}{7.7\cos\theta})^2\\\Rightarrow 0=7.7\sin\theta-4.905\times \dfrac{5.34}{7.7\cos\theta}\\\Rightarrow 0=7.7^2\sin\theta \cos\theta-4.905\times 5.34\\\Rightarrow 0=7.7^2\dfrac{\sin2\theta}{2}-4.905\times 5.34\\\Rightarrow 0=7.7^2\sin2\theta-4.905\times5.34\times 2\\\Rightarrow \sin2\theta=\dfrac{4.905\times 5.34\times 2}{7.7^2}\\\Rightarrow 2\theta=\sin^{-1}\dfrac{4.905\times 5.34\times 2}{7.7^2}

\Rightarrow \theta=\dfrac{62.07}{2}\\\Rightarrow \theta=31.035^{\circ}

The angle at which the ball was thrown is 31.035^{\circ}.

7 0
3 years ago
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