PHYSICS HIGH SCHOOL

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

Answer 1
Answer: 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

Related Questions

Adam applies an input force to the pulley as he pulls down to lift the object. As he does this, Adam wonders about how the pulley is helping him. How is the pulley helping Adam lift the object?a. All of these answers are correct. b. A fixed pulley lowers the amount of force needed to do the same amount of work. c. A fixed pulley increases the distance over which the force is applied. d. A fixed pulley helps Adam change the direction of the effort force.
Explain why ultra-high voltages are used to carry electricity over transmission lines.
If you have a projectile and you double its mass, how would this affect its horizontal velocity?
A projectile is launched with an initial velocity of 1.414 m/s at 45° above the horizontal. What is the vertical component of the projectile's velocity when it strikes a wall 0.50 m away?
Typically, water runs through the baseboard copper tubing and, therefore, fresh hot water is constantly running through the piping. However, consider a pipe where water was allowed to sit in the pipe. The hot water cools as it sits in the pipe. What is the temprature change, (ΔT), of the water if 193.0 g of water sat in the copper pipe from part A, releasing 2665 J of energy to the pipe? The specific heat of water is 4.184 (J/g)⋅∘C.

Force of attraction between the Earth(m=5.98x10^24) and a 70 kg student. distance of 6.38x10^6

Answers

F=G(m₁m₂/r²)
= 9.81(70*5.98x10²⁴/6.38x10⁶)
=9.81(6.56x10³¹)
=6.44x10³²

A wave with a period of 1/3 second has a frequency of

Answers

The frequency of the wave is 3hz

What is the function of brushes ​

Answers

Answer:

A brush is a device which conducts current between stationary wires and moving parts, most commonly in a rotating shaft.

What do an electron and a neutron have in common? Each particle has a mass of 1 amu.
Each particle exists inside an atom.
Each particle has an electrical charge.
Each particle is located in the nucleus.

Answers

The correct answer to this question is B) Each particle exists inside an atom.

EXPLANATION:

Before going to answer this question , first we have to understand the nature of electron and neutron.

Electrons and neutrons are the subatomic particles which are present inside the atom.

Electron is that subatomic particle which is present in the extra nuclear part of the atom, and it moves around the nucleus in different permitted, stationary orbits. The charge of electron is negative.

The neutron is that subatomic particle which is present in the nuclear part of the atom along with protons. The charge of proton is positive and the neutron is neutral in nature.

Hence, the correct option of this question is that both electrons and neutrons are present inside the atom.

Answer:

B. I did it on my quiz.

Explanation:

ik this was in 2015

If a step-up transformer has a primary coil with 15 turns, how many turns would be required in the secondary coil in order to increase the voltage from 80 volts to 160 volts? A. 8 turns B. 30 turns C. 80 turns D. 160 turns

Answers

Answer:

N_2=30turns

So option (b) will be correct option

Explanation:

We have given that there is a step up transformer in which number of turns in primary coil is 15

That is, N_1=15

Primary voltage V_1=80volt, and secondary voltage V_2=160volt

We have to find the number of turns in the secondary \

We know that for the transformer

(N_1)/(N_2)=(V_1)/(V_2)

(15)/(N_2)=(80)/(160)

N_2=30turns

So option (b) will be correct option

Blue light and yellow light combine to produce white light becausea. they absorb each other s wavelengths.
b. blue, yellow, and white are primary colors.
c. they are complementary colors of light.
d. they are both primary colors of light.

Answers

Answer: The correct answer is c.

Explanation: According the RGB color model, the light of the two complementary colors will combine to form a white light. This happens because the complementary colors combine at full intensity.

Complementary colors according to RBG color model is:

  1. Red - Cyan
  2. Green - Magenta
  3. Blue - Yellow

From the above information, we conclude that blue light and yellow light are complementary colors of light and hence, the combination of two will produce white light.
Blue and yellow light combine to produce white light because they are complementary colors of lights.
When you say complementary colors, it refers to a combination of 2 colors that when mixed, they fade out their color. That's why when blue light and yellow light are combined they produces white light.
Other Questions
An object is 30.0 cm to the left of a convex lens with a focal length of +8.0 cm. Draw a ray diagram of the setup showing the location of the image. Calculate the distance of the image from the lens. Is the image upright or inverted?
-g A small block is attached to an ideal spring and is moving in SHM on a horizontal frictionless surface. The amplitude of the motion is 0.165 m. The maximum speed of the block is 3.90 m/s. What is the maximum magnitude of the acceleration of the block?
All living things are made up of two or more cells true or false
Compute the resistance in ohms of a copper block 5.0 cm long and 0.10 cm2 in cross-sectional area. (ρ = 1.77 × 10-6 ohm-cm)