A ray of light in diamond (index of refraction 2.42) is incident on an interface with water. What is the largest angle the incident ray can make with the normal in diamond and not be totally reflected back into the diamond?

By solving the given equation on [² f(u)du = t_ -L₁ €² 2 f(u)du is obtained, we can find t.= J 1+e²t / 1 + e2t / 1-e²tdt. Now, we need to solve the integral,∫ 1+e²t / (1 + e2t)(1-e²t) dt.

For this integral, let u = 1+ e²tSo, du/dt = 2e²And, dt = du/2e²= 1/2e² ∫1+e²t / (u)(1-e²t) du= 1/2e² ∫ (1/u) - (e²/(1-e²t)) du= 1/2e² [ln|u| - ln|1-e²t|] + c.

Now, substituting back the value of u,= 1/2e² [ln|1+ e²t| - ln|1-e²t|] + c= 1/2e² ln|1+ e²t / 1-e²t| + c.

Now, putting the limits in the above expression and solving it, we get the value of t.= [1/2e² ln|1+ e²t / 1-e²t|] t = 1 2t / [1 + e²t] - L₁ 2t / [1-e²t].

Hence, the answer is D) f(t)= 2t / [1 + e²t] - L₁ 2t / [1-e²t].

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Answer:

a c d

Explanation:

yeet

Answer:

a c d

Explanation:

Answer:

i have no clue

Explanation:

The power output from the source is \(4.17 * 10^{-5}\) watts. The calculation is based on the electric field amplitude and distance from the source.

For calculating the power output, use the relationship between power, electric field amplitude, and distance from the source. The power is given by the formula:

\(P = (c * \epsilon_0 * E^2) / (2 * \mu_0)\)

where P is the power output, c is the speed of light, \(\epsilon_0\) is the permittivity of free space, E is the electric field amplitude, and \(\mu_0\) is the permeability of free space.

Substituting the given values into the formula:

\(P = (3.00 * 10^8 m/s * (8.85 * 10^{-12} C^2/N.m^2) * (2.95 V/m)^2) / (2 * 4\pi * 10^{-7} T.m/A)\)

Simplifying the expression yields the power output:

\(P = 4.17 * 10^{-5} W\).

Therefore, the power output from the source is \(4.17 * 10^{-5}\) watts.

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The complete question is:

A very small source of light that radiates uniformly in all directions produces an electric field amplitude of 2.95V/m at a point 41 m from the source. What is the power output from the source? (c = 3.00 × 108 m/s, μ 0 = 4π* 10^{-7} T.m/A, ε_0 = 8.85 * 10-12 C^2/N.m^2)

Answer:

the solid steel ball...more mass more weight more gravity

Explanation:

Answer:

Solid steel ball. It has more mass therefore more force will be acting on it.

Explanation:

The thickness of the air column above 1 m² of the Earth's surface that would have a weight of about 100,000 N is equal to 8,680.56 meters assuming the density of air remained constant at 1.2 kg/m³.

If the density of air were a constant 1.2 kg/m³ throughout the atmosphere, we can calculate the thickness of the air column that would have a weight of about 100,000 N on an area of 1 m².

The weight of the air column can be calculated using the formula:

Weight = density × volume × gravitational acceleration

We can rearrange the formula to solve for the volume:

\(\text{{Volume}} = \frac{{\text{{Weight}}}}{{\text{{density}} \times \text{{gravitational acceleration}}}}\)

Substituting the given values:

Weight = 100,000 N

Density = 1.2 kg/m³

Gravitational acceleration (g) ≈ 9.8 m/s²

\(Volume = \frac{100000 N}{(1.2 kg/m^3) \times (9.8 m/s^2)}\)

Volume ≈ 8,680.56 m³

Therefore, if the density of air were a constant 1.2 kg/m³, the thickness of the air column above 1 m² of the Earth's surface that would have a weight of about 100,000 N is approximately 8,680.56 meters.

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Answer:

B. unitless, surfaces

Answer:

roddy i guess?

Explanation:

Answer:

Dababy and Roddy Ricch. Jason's songs use to be fire years back but now....not so much.

Explanation:

After watching the Ted Talk, there were still a few questions that I had about supermassive black holes. Firstly, I wanted to know more about the event horizon and what it exactly entails. Although the speaker briefly touched upon this subject, I would have appreciated a more in-depth explanation. Additionally, I would have liked to know more about the role of supermassive black holes in the universe.

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The potential energy relative to ground will be 1245.445 J. If mass= 63.5 kg, height =2m.

Potential energy in physics is the energy that an item retains as a result of its position in relation to other objects, internal tensions, electric charge, or other elements. 

The gravitational potential energy of an item, the elastic potential energy of a stretched spring, and the electric potential energy of an electric charge in an electric field are examples of common types of potential energy. The joule, denoted by the letter J, is the energy unit in the International System of Units (SI).

Although it has connections to the Greek philosopher Aristotle's concept of potentiality, the word potential energy was coined by the Scottish engineer and physicist William Rankine in the 19th century[3][4]. Forces acting on a body in a way that increases the total work have potential energy attached to them.

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When two massless springs of force constants k1 and k2 are joined end to end, the resultant force constant k of the system can be calculated.

In this configuration, the springs are connected in series. For springs connected in series, the resultant force constant is given by the reciprocal of the sum of the reciprocals of the individual force constants:

1/k = 1/k1 + 1/k2

To find k, we take the reciprocal of both sides of the equation:

k = 1 / (1/k1 + 1/k2)

To simplify the expression, we can use the concept of the least common denominator:

k = 1 / ((k2 + k1) / (k1 * k2))

  = k1 * k2 / (k1 + k2)

Therefore, the resultant force constant k of the system is given by

k1 * k2 / (k1 + k2).

When two massless springs of force constants k1 and k2 are joined end to end in series, the resultant force constant k of the system is given by k = k1 * k2 / (k1 + k2). This can be derived using the formula for springs connected in series, which states that the reciprocal of the resultant force constant is equal to the sum of the reciprocals of the individual force constants.

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Energy must be transferred for motion, which is displacement, between the item and its system or environment. The energy's direction might either be toward or away from the object.

In your case, the energy must originate from the item itself in order for the force and subsequent movement to be in the opposite direction. For instance, rocket propulsion and jet engines. Propellers operate on a totally different mechanism that may be stated simply as "big pull, tiny push," therefore you cannot think of them in this way. Because they combine gasoline sparking to provide more thrust in turbojet engines (hence turbo).

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Answer:

A joule equals the amount of work done on an object when a force of 1 Newton displaces that object 1 metre

Answer: B: Rehabilitation and is known to increase flexibility.

PNF stands for Proprioceptive Neuromuscular Facilitation, which is a type of stretching that involves the contraction and relaxation of muscles. It is commonly used in rehabilitation settings to improve range of motion, flexibility, and muscle strength.

your welcome (:

Answer: 2 PARAGRAPH ESSAY

Explanation:Flexibility and stretching: preventing sports injuries

  Many may know about all the different types of sports around the world. Lots can leave serious injuries. All across the world more than 1.2 million people have been injured because of sports or maybe more than that. Most of the injuries have been kids. To prevent these injuries from happening. One thing is stretching if you  don’t stretch your bones more than likely you are not into your flexibility and reflexus that for they are very weak. If there is not enough flexibility within your movement you are more than likely not able to stretch. It can help the growth within your bone as well. If you have growth in your bones then you will get less injuries. If you break a bone such as your leg or sprain there is a chance that you will have problems with that specific leg later on in life. To prevent these types of events from happening I say stretch before a sporting game. Stretching can help with the impact of your  flexibility. For example, Olympic gymnasts are able to do lots of tricks because their bones have flexibility in their bones. That's not saying that they will not hurt themselves, it's just such a low risk because their bone grew strength and flexibility. Some people's bones can be very sensitive then others so it might be kind of hard for them to be flexible. Another way to help people with their bone flexibility is drinking milk. Milk helps grow your bones. This can help prevent sport injuries in many ways. Lots of people get hurt in football to be more specific because it's such a durable sport as in tough. If they drink a lot of protein and milk before a game maybe even Carbohydrates their bones will be ready for the game. Flexibility and stretching can go lots of ways when it has to do with your body.  JUST STAY FIT

Answer:

when you learn to lift weights with the proper body mechanics good form becomes a habit It's true

Answer:

Use the method on the image and solve it.

The train is accelerating with an initial velocity of 23 m/s, a final velocity of 190 m/s in the time period of 54 seconds, then the acceleration will be 3.09 m/s².

Velocity is the measurement of a particle's or object's displacement with relation to time. The recognized unit of magnitude for velocity is the meter per second (m/s) (also known as speed).

There are several ways to show a velocity vector's direction, depending on how many dimensions are provided.

The given values in the question are,

Initial velocity, u = 23 m/s

Final velocity, v = 190 m/s and,

Time, t =54 seconds.

By putting the formula of the equation of motion :

v = u + at

190 = 23 + (a)(54)

a = 167/54

a = 3.09 m/s².

Hence, the acceleration of the train is equal to 3.09 m/s².

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Answer:

i think its resonance but if im wrong its my fault

Explanation:

The weight of a 75 kg person on Earth is 735 N, The correct option is D.

Acceleration due to gravity is the acceleration that an object experiences due to the gravitational force exerted by a massive body, such as Earth. The acceleration due to gravity on Earth is approximately 9.8 meters per second squared (m/s^2) and is denoted by the symbol "g".

The acceleration due to gravity is a vector quantity, which means that it has both magnitude and direction. The direction of the acceleration due to gravity is always downwards, towards the center of the massive body.

The acceleration due to gravity is a constant value near the surface of the Earth, but it can vary slightly depending on altitude, latitude, and the composition of the Earth's interior. For example, at higher altitudes, the acceleration due to gravity decreases slightly, while at the equator, it is slightly greater than at the poles due to Earth's rotation.

The acceleration due to gravity plays an important role in many physical phenomena, including free fall, projectile motion, and the behavior of fluids in containers.

Here in the Question,

The weight of a 75 kg person on Earth can be calculated using the formula:

weight = mass x acceleration due to gravity

Substituting the given values, we get:

weight = 75 kg x 9.8 m/s^2

weight = 735 N

Therefore, the weight of a 75 kg person on Earth is 735 N, which is option D.

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Answer:

Only one parent is needed, and it is faster than sexual reproduction.

Explanation:

Sorry I'm not the best at explaining it but that's the answer.

asexual reproduction provides an advantage to the organisms that live on a rotting log by generating huge number of creatures in a very short amount of time

Asexual reproduction refers to a type of reproduction where a child is born to a single parent. The newly created people are clones of their parents since they have the same genetic makeup and physical characteristics.

Both multicellular and unicellular species can reproduce asexually. There will be no gamete fusion involved in this procedure, and the number of chromosomes will remain the same. With the exception of specific situations where there is a possibility that a rare mutation will occur, it will inherit the same genes as the parent.

The benefits of asexual reproduction are as follows:

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Sulfur dioxide is a colorless gas with a pungent odor. It is a liquid when under pressure, and it dissolves in water very easily. Sulfur dioxide in the air comes mainly from activities such as the burning of coal and oil at power plants or from copper smelting

A thermal power station that burns coal to produce electricity is known as a coal-fired power station or coal power plant. Around 8,500 coal-fired power plants with a combined capacity of over 2,000 gigawatts are present worldwide.

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Answer: By studying seismic waves scientists have learned about the layers of the Earth.

Answer: 480 N is required to maintain the arrangement .

Explanation:

Given, 320 N  force is required to hold 2 protons in a particular arrangement .

Then the force required to keep 1 proton in a particular arrangement = 320/2

= 160 N

Then if  a proton is replaced by an alpha particle , it is given that a alpha contains 2 protons , then we conclude that after replcament , the arrangement has 1 alpha and 1 proton = 3 protons

Then , the force exerted by 3 protons = 3×160 = 480 N

The force exerted by the arrangement , if one of the protons is replaced with alpha is 480 N

Answer:

try this

Explanation:

The energy of a falling object when it hits the ground is equaled to the energy it starts with because the potential energy is converted into kinetic energy entirely with the height at 0. This means the energy would be 200 J.

RESULT

Answer:

Changing the amplitude of a sound wave changes its loudness or intensity.

Explanation:

Constructive interference is what can make a sound louder, destructive interference will make a sound quieter. Two waves that add together may have different frequencies.

Answer:

V = 72000 volts

Explanation:

calculates the electric potential of a point B that is 75cm from a positive charge q = 9 × 10-6c

Given that,

Electric charge, \(q=9\times 10^{-6}\ C\)

We need to find the electric potential of a point B that is 75 cm from this charge. The formula for the electric potential is given by :

\(V=\dfrac{kq}{r}\\\\V=\dfrac{9\times 10^9\times 6\times 10^{-6}}{0.75}\\\\V=72000\ V\)

So, the electric potential is equal to 72000 Volts.