In your own words, explain why we see a rainbow or colorful sunset. Explain the properties and interactions that make this display possible.

Answers

Answer 1

Answer: Wee see rainbows due to the geometries of the raindrops. when the sun shines behind, rays of light enter the raindrops and this light are refracted. The lights are then reflected from the back of the raindrop and refracted again as it passes the rain drop. Refraction in this sense is the cause for splitting the light into several colors.

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A ray of monochromatic light (f=5.09x10^14 hz) passes through air and a rectangular transparent block calculate the absolute index of refraction for the medium of the transparent block Angle of incidence of the light ray as it enters the transparent block from air =40 degrees
The angle of refraction of the light ray as it enters the transparent block from air = 20 degrees
Calculate the absolute index of refraction from the medium of the transparent block

Answers

The right answer for the question that is being asked and shown above is that: "The angle of refraction of the light ray as it enters the transparent block from air = 20 degrees." A ray of monochromatic light (f=5.09x10^14 hz) passes through air and a rectangular transparent block calculate the absolute index of refraction for the medium of the transparent block

A wave travels down the length of a 25-meter rope in 5.0 seconds. The speed of the wave is _____.5.0 m/s
0.2 m/s
125 m/s
25 m/s

Answers

The answer is 5.0 m/s. It is asking for the SPEED of the wave, therefore, you need to know that speed = distance / time. You just simply divide 25 meters (distance) to 5.0 seconds (time) which will leave you the speed of 5.0 m/s.

Answer:

5.0 m/s

Explanation:

Distance/Time Taken

You're caring for three children in your home: a three-year-old, a four-year-old, and a two-month-old infant. The infant often becomes hungry and wants to be fed just when you're involved in something with the two older children. What should you do with the infant? A. Put the infant in a location so he or she can watch you and the other two children; then feed the infant when you're through.
B. Hold and feed the infant while you supervise the activity of the older children.
C. Have the older two children continue the project on their own while you feed the infant in a separate room.
D. Prop the infant's bottle in the crib so he or she can eat while you continue to help the older children

Answers

Answer: B. Hold and feed the infant while you supervise the activity of the older children.

Explanation: On one side, a two-month-old is too young to understand that he has to wait until you finish with your other activities so you are free to feed him. His needs are urgent. Of course he is also too young to take the bottle on his own. These are the reason why options A and D are incorrect. On the other side, the other two children also need your supervision. You have to take care of them and leave them alone is not a good option. This is why option C is incorrect. Taking all these things into account I find option B as the best answer.

B i belive, :) :) :) ..

1. What conditions must exist in order for a force to do work on an object?

Answers

Energy? whether it is kinetic or potential, force usually requires some sort of energy to do work

Does sit-ups reduce belly fat?

Answers

yes it does because it exercises the muscles :))

It does. When you are doing sit ups, it makes your core work and if you have a good strong core then you are burning fat.

Given: Q1 = 3.0 × 10-5 CQ2 = 4.0 × 10-5 C
K = 9.00 × 109 N ×
r = 3.0 m, determine F.

_____ N

Answers

The force is obtained from the charges Q₁ = 3×10⁻⁵ C and Q₂ = 4×10⁻⁵ C and distance r = 3 m is 1.2 N.

What is Coloumb's law?

Coloumb's law is defined as the force of attraction and repulsion between two charges is directly proportional to the product of charges and inversely proportional to the square of the distance between them.

The attractive and repulsive force, F∝ (q₁×q₂) / r². It is also known as F = k (q₁×q₂) / r², where k is the proportional constant. The unit of force is newton N.

From the given,

Q₁ = 3×10⁻⁵ C

Q₂ = 4×10⁻⁵ C

r = 3m

k = 9×10⁹ Nm²C⁻²

The attractive and repulsive force,

F = k (q₁×q₂) / r²

= (9×10⁹× 3×10⁻⁵×4×10⁻⁵) / (3)²

= 12×10⁻¹

= 1.2 N

Force = 1.2 N

Thus, the force of repulsion and attraction of given charges is 1.2 N.