Physics, 10.11.2020 16:40 sloansters9315

1. The arctic tern flies from the Arctic to the Antarctic and back every year, a total distance of 22,000 miles! In late summer, the terns start their migration south, and it takes about 3 months to go the 11,000 miles. What is the average velocity, in miles per day, that these birds travel?

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Answer from: Bladen6579

The average velocity that these birds travel is 122.22 miles per day to the south.

Explanation:

Speed is the physical quantity that expresses the variation in position of an object and as a function of time. In other words, speed is a physical quantity that expresses the relationship between the space traveled by an object, the time used for it and its direction.

Speed is expressed mathematically as the quotient between distance and time:

$v=\frac{d}{t}$

where "v" is the speed of the mobile, "d" is the distance traveled by the mobile, and "t" is the time taken by the mobile to carry out the movement.

In this case:

d= 11,000 milest=3 months= 90 days ( considering that in 1 month there are 30 days)

Replacing:

$velocity=\frac{11,000 miles}{90 days}$

velocity = 122.22 $\frac{miles}{day}$

The average velocity that these birds travel is 122.22 miles per day to the south.

Answer from: Quest

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.

Answer from: Quest

A). redi wish i´ve

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1. The arctic tern flies from the Arctic to the Antarctic and back every year, a total distance of 2...

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