All categories

3 years ago

What happens when light waves travel from air through a denser medium

Physics

1 answer:

Hitman42 [59]3 years ago

7 0

Answer:

When a ray of light passes from a denser material into a less dense material it is bent towards the surface between the two materials. This means that in this situation the angle of refraction is always greater than the angle of incidence. ... They also apply to light passing through lenses

You might be interested in

Two trains are on separate but parallel tracks running east and west. One has a speed of 90 km/h, the other 80 km/h. Initially,

Tanzania [10]

Answer: 4 hours

Explanation: Their approach rate is 100+140 or 240 km/h and 960/240 which equals 4 hours

4 0

4 years ago

A 330-km-long high-voltage transmission line 2.00 cm in diameter carries a steady current of 1,110 A. If the conductor is copper

vodka [1.7K]

Answer:

t = 402 years

Explanation:

To find the number of year that electrons take in crossing the complete transmission line, you first calculate the drift speed of the electrons. Then, you use the following formula for the current in a wire:

$I=nqv_dA$ (1)

n: number of mobile charge carrier per volume = 8.50*10^28 e/m^3

q: charge of the electron = 1.6*10^-19 C

vd: drift velocity of electron in the metal = ?

A: cross sectional area of the wire = π r^2 = π (0.02m/2)^2 = 3.1415*10^-4 m^2

I: current in the wire = 1110 A

You solve the equation (1) for vd:

$v_d=\frac{I}{nqA}=\frac{110A}{(8.50*10^{28}m^{-3})(1.6*10^{-19}C)(3.1415*10^{-4}m^2)}\\\\v_d=2.59*10^{-4}m/s$

Next, you calculate the time by using the information about the length of the line transmission:

$x=v_dt\\\\x=330km=330000m\\\\t=\frac{x}{v_d}=\frac{330000m}{2.59*10^{-4}m/s}=1,270,184,865s\\\\1,270,184,865s*\frac{1\ year}{3,156,107}=402.45\ years$

hence, the electrons will take aproximately 402 years in crossing the line of transmission

6 0

3 years ago

Two objects of the same size will always have the same mass ? Is this statement correct

vlabodo [156]

Answer: The statement is false , if Jupiter and Venus somehow became the same size, Jupiter would still have more mass due to its density and composition and rocks, minerals, and etc.

Explanation:

8 0

3 years ago

Read 2 more answers

One watt is wqual to 1kg .m/s³

djverab [1.8K]

1 watt = 1 joule per second = 1 newton meter per second = 1 kg m2 s-3

6 0

3 years ago

Read 2 more answers

What are spooky rays? How were they discovered? How are they related to visible light?

trapecia [35]

<h2>What are spooky rays? :Spooky rays are Halloween; Spooky mystic background light beams rays.</h2>

<h2>How was spooky rays discovered; In 1895,a German Engineer Wilhelm Röntgen, was experimenting with making cathode rays .His device was blacked out.But he noticed a piece of cardboard painted with barium platinocyanide flouresced when it was placed near the cathode ray tube.</h2>

<h2>How are they related to visible light?: This occurs when two particles are inextricably linked.</h2>

5 0

4 years ago