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2 years ago

The angle of incidence of another red ray is 65º. The refractive index of the glass of block

Physics

1 answer:

Mamont248 [21]2 years ago

6 0

Answer:

34º

Explanation:

The computation of the angle of refraction in the glass for this ray is shown below:

Given that

the angle of incidence of another red ray is 65º

And, n_1 = 1

n_2 = 1.62

According to shell law

n_1 sin $\theta$ _1 = n_2 sin $\theta$ _r

sin $\theta$ _r = 1 sin 65÷ 1.62

= 0.559

$\theta$ _r = sin^-1 (0.559)

= 34º

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Initially a car accelerates at 2 m/s2 for x seconds. The car then travels at a velocity of -6 m/s for x seconds. If the car disp

Luda [366]

Answer:

The time travel is

t=8 s

Explanation:

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Check

$t_{2}=8s$

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3 years ago

Two cars cover the same distance in a straight line. Car a covers the distance at a constant velocity. Car b starts from rest an

Artyom0805 [142]

a) For the motion of car with uniform velocity we have , $s = ut+\frac{1}{2}at^2$ , where s is the displacement, u is the initial velocity, t is the time taken a is the acceleration.

In this case s = 520 m, t = 223 seconds, a =0 $m/s^2$

Substituting

$520 = u*223\\ \\u = 2.33 m/s$

The constant velocity of car a = 2.33 m/s

b) We have $s = ut+\frac{1}{2} at^2$

s = 520 m, t = 223 seconds, u =0 m/s

Substituting

$520 = 0*223+\frac{1}{2} *a*223^2\\ \\ a = 0.0209 m/s^2$

Now we have v = u+at, where v is the final velocity

Substituting

v = 0+0.0209*223 = 4.66 m/s

So final velocity of car b = 4.66 m/s

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3 years ago

Define infer in science.

tia_tia [17]

Answer :Scientific Definition of Inference

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Explanation:

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3 years ago

Investing in yourself and your career often requires you to “play it safe”.

SashulF [63]

i'd say false, is this for health or lifeskills?

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3 years ago

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jenyasd209 [6]

Answer:

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We have

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2 years ago