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3 years ago

Describe how the speed of light waves changes when they travel from air into a

Physics

2 answers:

Naddika [18.5K]3 years ago

5 0

Answer:

Speed of light decreases when it goes from a rarer medium to denser medium and increases when it travels from denser to rarer.

Explanation:

when light will fall on aquarium the glass wall and water inside it are denser compared to the air outside. so, the ray will refract from its original path (bending towards the normal) and decrease its speed. The reverse happens when it travels out of aquarium. the air is less dense compared to the water and glass so it will increase the speed.

Stolb23 [73]3 years ago

3 0

Answer:

speed of light waves change when they travel in air to aquarium because want's the light hits the water you see bunches of color along with bigger looking objects

Explanation:

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Identify each unit as belonging to SI units or US Customary units.

torisob [31]

Answer:

<em>SI Units</em>

Meter

Kilogram

Kelvin

<em>US Customary Units and English Units</em>

Gallon

Mile

Pound

Degrees Fahrenheit

Explanation:

The SI units or International System of Units are the widely used metrics of measuring a physical quantity. It has specific abbreviations.

The US customary units is a measurement system where it is widely used in the united states. This system of unit also has abbreviations.

There are also conversion scales that are used to convert a unit from one metric system to the other.

For example, the conversion of mile to SI unit is given by the formula

1 mile = 1609.4 meters

Similarly,

1 pound = 0.453592 Kg

6 0

3 years ago

We can only tell the earth is rotating almost 960 miles an hour if we

alexira [117]

Answer:

It is C i have to type this because i need 20 characters.

8 0

2 years ago

In an attempt to escape his island, Gilligan builds a raft and sets to sea. The wind shifts a great deal during the day, and he

lana [24]

Answer:8.28 km

Explanation:

Given

First it drifts $45^{\circ}$ 2.5 km

$r_1=2.5cos45 i+2.5sin45 j$

Secondly it drifts $60^{\circ}$ 4.70 km

$r_{12}=4.7cos60 i-4.7sin60 j$

After that it drifted along east direction 5.1 km

$r_{23}=5.1 i$

After that it drifts $55^{\circ}$ 7.2 km

$r_{34}=-7.2cos55 i-7.2sin55 j$

After that it drifts $5^{\circ}$ 2.8 km

$r_{54}=-2.8cos5 i+2.8sin5 j$

$r_{5O}$ = $\left [ 2.5cos45+4.7cos60+5.1-7.2cos55-2.8cos5\right ]\hat{i}$ + $\left [ 2.5sin45-4.7sin60-7.2sin55+2.8sin5\right ]\hat{j}$

$r_{5O}=2.299\hat{i}-7.95\hat{j}$

$|r_{5O}|=8.28 km$

for direction

$tan\theta =\frac{7.95}{2.299}=3.4580$

$\theta =73.87^{\circ}$ south of east

7 0

3 years ago

Read 2 more answers

I'm studying the equilibrium of forces so hard that I got confused for a sec. Is the force due to gravity included in summing up

jenyasd209 [6]

Answer:

Yes, you would consider the mass × gravity at the centre of gravity of the object in question to cause a moment, hence it should be included in your resolution

3 0

2 years ago

Which of these statements is false? Question 18 options:

Katarina [22]

True because the kind of light we get is white light and everything we see is actually every colour except the color we are seeing because that is wwhat is reflected

6 0

3 years ago