An airplane traveling north at 220. Meters per second encounters a 50.0-meters-per-second crosswind from west to east What is the resultant speed of the plane?

Importanceofozonelayer:

• The ozone shields the surface of the earth from ultraviolet UV radiation from the sun.
• These radiations are highly damaging as they can cause cancer in both plants and animals, damage to eyes and immune system.
• They can also lead to variations in global rainfall, ecological disturbances and dwingling of global food suppliers.

Explanation:

Formationofozonelayer:ozone at the higher level of the atmosphere is a product of UV radiations acting on oxygen O2 molecule. The higher energy UV radiations split apart some molecular oxygen( O2) into free oxygen (O) atoms.

Depletionodozonelayer:The amount of ozone in the atmosphere began to drop sharply in the 1980's . This decrease has been linked to synthetic chemicals like cholorofluorocarbons ( CFC's ) which are used as refrigerants and in fire extinguishers.

The dark fringes that appear represent where the waves interfere

C. Destructively

Explanation:

Interference is a phenomenon typical of waves, that occurs when two waves meet at a certain point in space. The amplitude of the resultant wave can be found by using the principle of superposition, which states that the displacement of the resultant wave is the sum of the displacements of each wave. In particular, there are two extreme cases that can occur:

- Constructive interference:  this occurs when the two waves meet in phase - i.e., the crest of one wave meets with the crest of the other wave. In this case, the amplitude of the resultant wave is twice the amplitude of each wave.

- Destructive interference: this occurs when two waves meet in anti-phase - i.e, the crest of one wave meets with the trough of the other wave. In this case, the amplitude of the resultant wave is equal to the difference between the two amplitues (and if the two waves have same amplitude, the resultant amplitude will be zero).

This phenomenon can occur also with light wave (which is a type of wave), and it leads to:

- The presence of bright fringes in case of constructive interference

- The presence of dark fringes in case of destructive interference

Therefore, the correct answer is

C. Destructively

Learn more about waves:

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Answer:

When demonstrating the interference of light waves, the dark fringes that appear represent where the waves are destructively interfere destructively.

Explanation:

The bright lines symbolize constructive interference and some dark lines symbolize destructive interference.

• Interference does a phenomenon typical of waves, that occurs during two waves meet at a particular point in space. The amplitude of the resultant wave can do determined by using the system of superposition, which states that the displacement of the resultant wave equals the sum of the displacements of each wave. Inappropriate, two extreme cases can occur:

• Constructive interference:  that happens when the two waves participate in the state - i.e., the peak of individual waves agrees with each peak of each and every other wave. For this situation, the adequacy of this resultant wave infers double the abundancy from all waves.
• Destructive interference: that occurs when two waves joins in anti-phase - i.e, the crest of one wave joins with the through of the other waves.  In this case, the amplitude of the resultant wave is equal to the difference between the two amplitudes (and if the two waves have the same amplitude, the resultant amplitude will be zero).
• This phenomenon can occur also with lightwave (which is a type of wave), and it leads to:
• The presence of bright fringes in case of constructive interference
• The presence of dark fringes in case of destructive interference

Therefore the correct answer is option C

To learn more about interface waves, refer:

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Answer:

its like to orginized your stuff and at the end have a answer

The relative size of earth and moon are a little bit of close  in astronomical world.One can find unique relationship between two planetary systems i.e the earth and moon.

In astrophysics the term binary planet system refers to two planets.Here both the planets are of planetary masses.Two planetary bodies will be considered as the binary system if their sizes are proportional to each other and comparable.

Moon is the one satellite in the entire solar system which is larger than other satellites.The weight of the earth is 81 times more than the weight of earth and it is just 384000 km away from earth .Ideally it can not be considered as binary planet system.But it is considered as a binary planet system as their relative size are so close.

Hence the answer of this question is binary planet system.