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

Answer 1

Answer: 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

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A light ray traveling in air enters a secondmedium and its speed slows to 1.71 × 10^8 meters
per second. What is the absolute index of
refraction of the second medium?
(1) 1.00 (3) 1.75
(2) 0.570 (4) 1.94

Answers

Light travels at 300,000,000 meters per second, in scientific notation 3 * 10^8 meters per second. Note that in the medium it travels at 1.71 * 10^8. Taking the ratio of these two numbers with the final speed over the initial speed, we get (1.71*10^8)/(3*10^8) = 1.71/3 = 0.57

Your answer is (2) 0.570

If The dimensions of a brick that weighs 25N are 0.19m x 0.07m x 0.095m. What pressure does the brick exert on the ground if it is resting on its largest face?

Answers

1 newton per square meter = 1 pascal of pressure.

The largest face of the brick is (0.19 x 0.095) = .01805 square meter

25N/0.01805 = 1,385 newtons per square meter = 1,385 pascal = 1.385 kPa

In a motor dozens or hundreds of wire loops wrapped around a ferromagnetic core is called

Answers

I believe the word you are looking for is called an armature.

Which of the following substances are NOT formed by chemical bonds?A. mixture
B. molecule
C. compound
D. pure substance

Answers

Answer:

The answer is D. pure substance.

Explanation:

A pure substance is a particular class of homogeneous matter whose composition is fixed and chemically defined, that is, it has a stable chemical composition since it is a matter that remains chemically unaltered in its different states of aggregation, endowed with properties singular and characteristic. A pure substance is composed of entities such as molecules, formular units and atoms.

Pure substance becuase if it is pure it is not a bond

jamie is not sure a new medication will work because it has not had a large test group. Is jamie being creative?

Answers

No, he is being skeptical.

In the situation above Jamie doubts because the test was done with a small sample. He thinks the results are uncertain because it is needed a big sample to avoid mistakes and icrease the reliability of the study. So, this leads to scepticism, which means doubt about the truth of something, this is what Jamie does in the situation, this is why he is being skeptical.

no, they're being skeptical.

The water at the top of a waterfall has _____ energy.potential
kinetic
heat
metabolic

Answers

I believe the answer isPOTENTIAL ENERGY. The water at the top of the waterfall has Potential Energy.Potential Energy is defined as the energy that is stored when an object is atrest. At the top of the waterfall, water will have maximum potential energy. Whenthe water falls down, it is will already have kinetic energy which is energythat is produced through continuous motion. When it is finally in the bottom,water will have maximum kinetic energy.

Answer:

The water at the top of a waterfall has __potential___ energy.

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