Convert 35 centimeters to inches

Light traveling in water (n = 1.33) into an unknown medium.If rhe angles if incidence and refraction are 40 degrees and 25 degre

Bess [88]

40 degreased and 25 dregrees=65 degrees‍♀️

8 0

3 years ago

A beam of light strikes a sheet of glass at an angle of 57.0°. with the normal in air. You observe that red light makes an angle

Lena [83]

Answer:

a) Red: 1.34

Violet: 1.40

b) Red: $2.23\times10^8\frac{m}{s}$

Violet: $2.14\times10^8\frac{m}{s}$

Explanation:

a) We should use Snell's law to find the index of refraction:

$n_{1}sin\theta_{i}=n_{2}sin\theta_{t}$

with n1 the index of refraction of air, n2 the index of refraction of the glass, θi the angle of the incident ray respects the normal an θt the angle between the refracted ray an the normal. It's common to approximate n1=1

solving n2 for red light:

$\frac{sin\theta_{i}}{sin\theta_{t}}=n_{2}$

$n_2=\frac{sin57.0}{sin38.1}= 1.34$

solving n2 for violet light:

$\frac{sin\theta_{i}}{sin\theta_{t}}=n_{2}$

$n_2=\frac{sin57.0}{sin36.7}= 1.40$

b) Index of refraction on a medium is defined as the ratio between the velocity of electromagnetic waves on vacuum (velocity of light c) and the velocity in medium (v):

$n_2=\frac{c}{v}$

solving v for red:

$v=\frac{c}{n_2}=\frac{3\times10^8}{1.34}=2.23\times10^8\frac{m}{s}$

solving v for violet

$v=\frac{c}{n_2}=\frac{3\times10^8}{1.40}=2.14\times10^8\frac{m}{s}$

8 0

3 years ago

How can a tennis ball and a bowling ball have the same momentum ?

Verdich [7]

C would be the right answer edu

7 0

3 years ago

This diagram shows about question 3 In this diagram, the forces on the runner and on the ground are equal. Why does the runner m

Dovator [93]

According to newton's third law: every action has an equal and opposite reaction, so yes the ground does move backwards. You have 4 forces acting on you at any given time: pushing force, friction force, gravity, and normal force. you push against something to propel forward, you have to overcome gravity and friction, and normal force keeps things upright to prevent them from falling into each other.

<span>If everything is motionless at every instant, and time is entirely composed of instants, then motion is impossible, so it must be an illusion.
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if you really want things to get confusing you can read up on zeno's dichotomy paradox stating that there is infinate amount of times you can divide something such as a distance traveled over time and you will stil

7 0

4 years ago

A car travels at a constant rate for 100 miles going due west for one hour. Then it travels at a constant rate for another 75 mi

nirvana33 [79]

Answer:

C. 100 mph west

Explanation:

Average velocity is total displacement over total time. During the first hour, the average velocity is:

v_avg = 100 mi / 1 hr

v_avg = 100 mph west

Since the velocity is constant, the instantaneous velocity at any time equals the average velocity.

v = v_avg

v = 100 mph west

7 0

4 years ago