What is the critical angle of a diamond having a refractive index of 2.42? Use air as the second medium. Air has the refractive index 1.00.A. 14.9°
B.24.4°
C.36.6°
D.40.9°

Answers

Answer 1

Answer: Given:
refractive index: diamond = 2.42 ; air = 1

90° should have been provided in the problem. I encountered similar problem before.

Using Snell's Law: n1*sin(a) = n2*sin(b)
where:
n1 and n2 are the refractive indexes
sin(a) and sin(b) are the corresponding angles.

n1 = 2.42
n2 = 1.00
b = 90°

n1 * sin(a) = n2 * sin(b)
2.42 * sin(a) = 1 * 1
2.42 * sin(a) = 1
sin(a) = 1 / 2.42
sin(a) = 24.4° Choice B.

Answer 2

Answer:

B.24.4

Explanation:

Plato user

Related Questions

Which of the following group 7A elements is the most reactive?
A scientist is conducting research to determine how much pressure a dam can withstand. Why are good observations important to his research?
What does temperature measure?a. the amount of disorder in a substance b. the average kinetic energy of molecules c. the average potential energy of molecules d. the direction of the moving molecules in a substance
Earth is the only planet known to have _____.an atmospherea lithospherea biospherea cryosphere
If the deflection of a spring is doubled, then how much does the force change?

How is sun related to nuclear, electromagnetic, and heat energy?

Answers

Answer;

The sun creates energy through nuclear fusion. Kinetic energy creates heat and light.

Explanation;

Solar energy from the sun is the primary source of energy on the surface of life that is important for sustaining life on earth.
Nuclear fusion occurring in the sun involves a nuclear reaction in which hydrogen nuclei fuse together to form helium nuclei and release energy.
Electromagnetic energy from the sun comes to Earth in the form of radiation. This energy travels through space at a speed equivalent to that of other electromagnetic radiations that is the speed of light.
The electromagnetic energy from nuclear fusion in the sun generates kinetic energy that in turn creates light and heat.

The nuclear energy is the source of energy production on the sun, then this travels to the Earth in the form of Electromagnetic radiation and as it heats up the other bodies in solar system, it gets converted into the heat energy.

Explanation:

The sun is considered to be the ultimate source of energy for the whole solar system. The energy produced in the sun reaches all the other planets in the solar system. The sunlight is a very big source of energy for the Earth also.

The energy produced on the sun is due to the nuclear reaction due to the immense pressure and temperature. This nuclear energy from the sun travels to the other bodies in the solar system by means of the electromagnetic radiations.

The electromagnetic radiations from the sun carry the heat energy to the bodies and as they reach the target, the target is heated up due to the conversion of the energy from the sun into the heat energy.

Thus, The nuclear energy is the source of energy production on the sun, then this travels to the Earth in the form of Electromagnetic radiation and as it heats up the other bodies in solar system, it gets converted into the heat energy.

Learn More:

1. Acceleration of the box under friction brainly.com/question/7031524

2. The kinetic energy of an object depends on the brainly.com/question/137098

3. The approximate time taken to walk for 2000 miles brainly.com/question/3785992

Answer Details:

Grade: High School

Subject: Physics

Chapter: Energy

Keywords:

sun, energy, nuclear, electromagnetic, heat, nuclear reaction, immense, pressure, temperature, source, solar system, planets.

What is the largest speed this projectile can have without causing the cable to break?

Answers

What projectile ?
What cable ?

What's the answer to this problem?

Answers

Acceleration = (change in speed) / (time for the change)

Acceleration = (12.15 - 0) / 4.5 = 2.7 meters per second²

walking converts what type of energy into mechanical energy? A) chemical B) electromagnetic C)nuclear D)thermal

Answers

it converts chemical energy into kinetic/mechanical energy

Answer:

A-Chemical Energy

Explanation:

Suppose a yo-yo has a center shaft that has a 0.230 cm radius and that its string is being pulled.(a) If the string is stationary and the yo-yo accelerates away from it at a rate of 1.80 m/s2, what is the angular acceleration of the yo-yo in rad/s2? rad/s2.
(b) What is the angular velocity in rad/s after 0.750 s if it starts from rest? rad/s.
(c) The outside radius of the yo-yo is 3.10 cm.What is the tangential acceleration in m/s2 of a point on its edge? m/s2

Answers

Answer:

Part a)

$\alpha = 782.6 rad/s^2$

Part B)

$\omega = 587 rad/s$

Part c)

$a_t = 24.3 m/s^2$

Explanation:

Part a)

As we know that

$a = R \alpha$

so we will have

$a = 1.80 m/s^2$

$R = 0.230 cm$

$\alpha = (a)/(R)$

$\alpha = (1.80)/(0.230 * 10^(-2))$

$\alpha = 782.6 rad/s^2$

Part B)

Angular speed of the yo-yo

$\omega = \alpha t$

so we have

$\omega = 782.6 * 0.750$

$\omega = 587 rad/s$

Part c)

Tangential acceleration is given as

$a_t = R \alpha$

$a_t = (3.10 * 10^(-2))(782.6)$

$a_t = 24.3 m/s^2$

What can be known about the density of sodiumhydroxide?
A. It will be 2.54 g/cm².
B. It will be different from the other chemicals.
C. It will be 1.67 g/cm3.
D. It will be the same as the other reactant.