Is the sky blue???????

















No No the sky is not blue.

A clear cloudless day-time sky is blue because molecules in the air scatter blue light from the sun more than they scatter red light. When we look towards the sun at sunset, we see red and orange colours because the blue light has been scattered out and away from the line of sight.

To understand why the sky is blue you need to remember how color works. Color is largely caused by how well an object absorbs the light spectrum. When you see a blue sky you only see blue because all the other colors were absorbed in the air. Any object with color works that way. For example a red ball is read because all the colors of light are absorbed by the ball except for red. This reflected light is what gives the object color.

This is what happens with the sky. The atmosphere is denser than we imagine and the different gases give the atmosphere unique properties in how it absorbs, diffuses, and reflects light. When sunlight passes through our atmosphere a portion of it is scattered and absorbed. The remainder either reaches the surface or is reflected back. The portion that makes it to us observers is 75 percent.

This process is called diffused sky radiation. So to review, we color because objects due to texture of dyes and surfaces absorb all light wavelengths and reflect back one or more. The reason we see the sky as blue is because the molecules in the air scatter the light absorbing most wavelengths of light except for blue.

In addition to this the sky is gray and overcast because of the water droplets in the atmosphere in the forms of clouds and humidity. water refracts light equally unlike air molecules in the atmosphere. This means we get the entirety of white light only it is dimmer just like when you shine a light through a white sheet.

The fact we see a blue sky is good thing because its shows that are atmosphere is at work shielding us from the full energy of the sun’s rays. While the sun is the largest source of energy to our planet, a lot of its high energy radiation that is deadly for living things. Our atmosphere plays it part by shielding us from that. So when you see a blue sky with your kid you can tell them it means the sky is acting like a huge shade blocking out the bad parts of the sun.

Answer:

D^2 = (x^2 + y^2) + z^2

and taking derivative of each term with respect to t or time, therefore:

2*D*dD/dt  =  2*x*dx/dt  + 2*y*dy/dt  + 0 (since z is constant)

divide by 2 on both sides,

D*dD/dt = x*dx/dt + y*dy/dt

Need to solve for D at t =0,  x (at t = 0) = 10 km,  y (at t = 0) = 15 km

at t =0,

D^2 =  c^2 + z^2 = (x^2 + y^2) + z^2  =  10^2 + 15^2 + 2^2  = 100 + 225 + 4  = 329

D = sqrt(329)

Therefore solving for dD/dt, which is the distance rate between the car and plane at t = 0

dD/dt = (x*dx/dt + y*dy/dt)/D  =  (10*190 + 15*60)/sqrt(329)  = (1900 + 900)/sqrt(329)

= 2800/sqrt(329) = 154.4 km/hr

154.4 km/hr

Step-by-step explanation:

Answer:

Step-by-step explanation:

Answer:

c dkdkk

yes cause i said so

Answer:

Step-by-step explanation:

this graph does not pass the vertical line test as it has many y values for the on x value. the answer is no, it is not a function

Answer:

its the second one y=870x-5300

Step-by-step explanation:

Answer:

[tex]1\frac{1}{2}[/tex]

Step-by-step explanation:

The first step to solving this problem is to convert these into improper fractions.

[tex]7\frac{2}{3} =\frac{21+2}{3}=\frac{23}{3}[/tex]

[tex]5\frac{1}{9} =\frac{45+1}{9}=\frac{46}{9}[/tex]

The second step is to determine the reciprocal of the second term.

Reciprocal of [tex]\frac{46}{9} =\frac{9}{46}[/tex]

The third step is to multiply the first term by the reciprocal of the second term.

[tex]\frac{23}{3}*\frac{9}{46}=\frac{207}{138}[/tex]

The fourth step is to reduce this fraction.

[tex]\frac{207}{138}=\frac{3(69)}{3(46)}=\frac{23(3)}{23(2)}=\frac{3}{2}=1\frac{1}{2}[/tex]

Answer:

1 1/2 or 3/2

Step-by-step explanation:

First you need to make your fractions improper.

7 times 3 + 2 = 23, so the fraction is 23/3

5 times 9 + 1 = 46, so the fraction is 46/9

Since this is division, flip the second fraction.

So instead of 46/9, it's now 9/46

Now you can multiply.

23/3 + 9/46 = 207/138

207/138 simplified is 3/2, or  1  1/2

Hope this helped! Leave a comment if it did. :)

Answer:

100 / 20 = 5

5 * 7 = 35

So the dog ate 35% of it

Step-by-step explanation:

yea so your welcome. im 7 btw

Answer:

35

Step-by-step explanation:

7/20 multiply by 100 = 35

Answer:

10 + 2x = y

Step-by-step explanation:10 + 2x = y

This is because 10 is the main cost then plus 2 per bingo card

When two numbers are next to each other it means multiplication

Answer:

the answer is

7x+9y_19=0

the sceond one is

3x_2y_14=0

Answer:

2y + 11x

Step-by-step explanation:

4y + 6x + 5x - 2y

=> 2y + 11x

Hoped this helped.

Step-by-step explanation:

-9y - 10 = x

x = -9y - 10

5x + 6y = -11

5(-9y - 10) + 6y = -11

-45y - 50 + 6y = -11

(-45 + 6)y = -11 + 50

-39y = 39

y = 39/-39

y = -1

x = -9y - 10

x = -9(-1) - 10

x = 9 - 10

x = -1

Answer:

49

Step-by-step explanation:

<EDA + <ADC = 180 (half an angle)

So:

180 - 61 = 119 = <ADC

The interior angles of the quadrilateral add up to 360- we already know three of them, so:

73 + 119 + 119 + C = 180 ->

311 + C = 180 ->

C = 180 - 311 ->

C = 49

:)

Answer:

34ft

Step-by-step explanation:

Line OQ is 46ft which is half of line SR which was 92ft. This means that half of line SP is the same as line QP or g: 68 ÷ 2 = 34. Therefore, g = 34ft

Hope this helps!

Answer:

a < -1

Step-by-step explanation:

    The question is asking what coefficient a could possibly be. By comparing the blue and red parabolas, it can be observed that the red parabola has been flipped and vertically stretched. Let's break this down.

    First, in order for the red parabola to mirror the blue parabola, it needs the opposite sign. The blue parabola's coefficient is positive. In order to mirror this, the red parabola's coefficient will need to be negative.

    Lastly, the red parabola has been stretched. In order for the red parabola to stretch, its coefficient has to be greater than 1.

    In conclusion, the red parabola needs to be negative and have a value greater than 1. Therefore, the answer is a < -1.

Answer:

I can even see anything can you reupload your answer, please?

Step-by-step explanation:

Answer:

20412

Step-by-step explanation:

because I mutiply everything together

Answer:   3024

Step-by-step explanation:  

4x3=12

12x6=72

72x6=432

432x7=3024

(2x - 20) = 20

(4x - 10) = 70

Step-by-step explanation:

y = x² + x + 5

y = x + 1

x² + x + 5 = x + 1

x² + 4 = 0

x² = -4

x = ±√-4 undefined

No solutions

Option → B

Answer:

d) 16.7%

Step-by-step explanation:

Answer:

D, 16.7%

Hope that helps (:

Answer:

what is part 2?? ey? ;)

Step-by-step explanation:

Answer: $62.5

Step-by-step explanation:

50 x 25% = 12.5

50+12.5=62.5

Answer:

At the end of 4 years, your savings will have grown to $6,077.

Step-by-step explanation:

Answer:

x=4

x=64

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

the zero is significant

7540

Answer:

Firstly, we are told that the value we are supposed to convert is "330 meters per second." When we see the word "per," we know that the unit should be divided.

So, really, the value is:

[tex]330\ \frac{meters}{second}[/tex]

Which can be abbreviated to:

[tex]\frac{330\ m}{1\ sec}[/tex]

We can scratch off the last two answers because they involve an x, and that is not our given value.

We can also eliminate the second answer because we are supposed to convert to kilometers, which is abbreviated by "km."

So, the answer is A or:

[tex](\frac{330\ m}{1\ sec})(\frac{1\ km}{1000\ m})[/tex]

The equivalent expression is [tex](a)\ \frac{330m}{sec} \times \frac{1\ km}{1000\ m}[/tex]

Speed is the rate of change of distance over time

The speed in meter per second is given as:

[tex]Speed =330m/sec[/tex]

To convert from meters to kilometers, we simply multiply the distance by 0.001.

So, we have:

[tex]Speed =\frac{330m}{sec} \times 0.001[/tex]

Express 0.001 as 1/1000

[tex]Speed =\frac{330m}{sec} \times \frac{1}{1000}[/tex]

Rewrite as:

[tex]Speed =\frac{330m}{sec} \times \frac{1\ km}{1000\ m}[/tex]

Hence, the equivalent expression is [tex](a)\ \frac{330m}{sec} \times \frac{1\ km}{1000\ m}[/tex]

Read more about equivalent expressions at:

https://brainly.com/question/2972832

Answer:

V = 268 cubic inches

Step-by-step explanation:

[tex]V = \frac{4}{3} \pi r^{3}[/tex]

[tex]V = \frac{4}{3} \pi (4^{3} )[/tex]

[tex]V =\frac{4}{3}\pi (64)[/tex]

V = 268.0825731

V = 268

The volume of the sphere with radius 4 inches is V = 268.08 inches³

A sphere is symmetrical, round in shape. It is a three dimensional solid, that has all its surface points at equal distances from the center. It has surface area and volume based on its radius. It does not have any faces, corners or edges.

The Surface Area of a Sphere = 4πr²

The Volume of a Sphere = ( 4/3 ) πr³

where r is the radius of the sphere

Given data ,

Let the radius of the sphere be r = 4 inches

Let the volume of the sphere be V

So , Volume of a Sphere = ( 4/3 ) πr³

Substituting the given value of the radius, r = 4 in, we get:

V = (4/3)π(4³)

V = (4/3)π(64)

V = 268.08 inches³

Hence , the equation that finds the volume of the sphere is

V = (4/3)πr³ = (4/3)π(4³) = 268.08 inches³

To learn more about sphere click :

https://brainly.com/question/27933834

#SPJ7

Answer:

x = 2

Step-by-step explanation:

Since we know one root is -3, we know one factor of the equation is (x+3)

From there we can use the factor we know to factor the rest of the equation:

x^2 + x - 6 = (x+3) * ?

Since know -6 is just 3 * -2 and since 3-2 is 1,

(x+3)(x-2) = x^2 + x - 6

From there,

x - 2 = 0

x = 2

Answer: 7/20

hope this helps XD

Answer:

first, simplify the equation, 5x-8x is -3x. So 6-7x = -3x+10

now subtract 6 from both sides, -7x = -3x+4

now add 3x on both sides. -4x = 4. now divide 4/-4 is -1. Thus X=-1

Answer:

x=-1

Step-by-step explanation:

6 - 7x = 5x - 8x + 10

First move the variables (x) to one side:

6 - 7x = 5x - 8x + 10

  +7x                +7x

6 = 5x - 8x + 7x + 10

Subtract 10 from both sides:

6 = 5x - 8x + 7x + 10

-10                           -10

-4 = 5x - 8x + 7x

Simplify:

4x = -4

Divide by 4 to isolate x:

4x = -4

÷4     ÷4

x=-1