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Alex17521 [72]
3 years ago
11

Light travels from crown glass (n=1:52) into air (n=1.00). The angle of refraction in

Physics
1 answer:
RUDIKE [14]3 years ago
8 0

The angle of incidence in glass is 34.7^{\circ}

Explanation:

We can solve this problem by applying Snell's law of refraction, which states that:

n_1 sin \theta_1 = n_2 sin \theta_2

where

n_1, n_2 are the index of refraction of the first and second medium, respectively

\theta_1, \theta_2 are the angle of incidence and refraction, respectively

In this problem we have:

n_1 = 1.52 is the index of refraction of the first medium (glass)

n_2 = 1.00 is the index of refraction of the second medium (air)

\theta_2 =60^{\circ} is the angle of refraction in glass

Solving for \theta_i, we find the angle of incidence:

\theta_1 = sin^{-1} (\frac{n_2 sin \theta_2}{n_1})=\sin^{-1}(\frac{(1.00)(sin 60^{\circ})}{1.52})=34.7^{\circ}

Learn more about refraction:

brainly.com/question/3183125

brainly.com/question/12370040

#LearnwithBrainly

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A basketball player standing under the hoop shoots the ball straight up with an initial velocity of v0Part (a) What is the maxim
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Maximum height will be h=\sqrt{\frac{v_0^2}{2g}}

Explanation:

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A ball is thrown with a speed of 20 m/s at an angle of 40o above the horizontal from the top of a 22-m tall building.
MrRissso [65]

Answer:

(a). The distance is  49.79 m.

(b). The speed of the ball is 24.39 m/s.

Explanation:

Given that,

Speed = 20 m/s

Angle = 40°

Height = 22 m

Time = 3.25 sec

(a). We need to calculate the distance

Using formula of distance

d=u\cos\theta\times t

Put the value into the formula

d=20\cos40\times3.25

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(b). We need to calculate the horizontal velocity

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We need to calculate the vertical velocity

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v_{y}=u\sin\theta-gt

Put the value into the formula

v_{y}=20\sin40-9.8\times3.25

v_{y}=-19\ m/s

Negative sign shows the opposite direction.

We need to calculate the speed of ball

Using formula of speed

v=\sqrt{v_{x}^2+v_{y}^2}

v=\sqrt{(15.3)^2+(19)^2}

v=24.39\ m/s

Hence, (a). The distance is  49.79 m.

(b). The speed of the ball is 24.39 m/s.

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