Now consider θc, the angle at which the blue refracted ray hits the bottom surface of the diamond. If θc is larger than the critical angle θcrit, the light will not be refracted out into the air, but instead it will be totally internally reflected back into the diamond. Find θcrit.

Answer:

Roots are basically hooked into the ground?

Explanation:

Maybe you could comment here the choices if it's multiple choice.

Answer:

0.451

Explanation:

The protons in molecules II and IV are expected to absorb furthest downfield in a ¹H NMR spectrum due to the presence of electron-withdrawing groups (-C=O and -NO₂, respectively).

To determine the proton that would absorb the furthest downfield in a ¹H NMR spectrum, we need to consider the factors that influence chemical shift.

Chemical shift is influenced by the electron density around the proton being observed. The presence of electron-withdrawing groups or deshielding effects can lead to a higher chemical shift value, resulting in absorption further downfield (to the left) in the NMR spectrum.

Let's analyze the indicated protons in each molecule:

I: There is no specified molecule given for I.

II: In this molecule, we need to consider the electron-withdrawing effect of the carbonyl group (-C=O). The proton indicated is adjacent to the carbonyl group, and the deshielding effect of the oxygen atom makes this proton likely to absorb further downfield.

III: In this molecule, there is no specified group or functional group mentioned for III.

IV: In this molecule, we need to consider the deshielding effect of the nitro group (-NO₂). The proton indicated is adjacent to the nitro group, and the electron-withdrawing nature of the nitro group makes this proton likely to absorb furthest downfield.

O: There is no specified molecule given for O.

Based on the analysis, the protons in molecules II and IV are expected to absorb furthest downfield in a ¹H NMR spectrum due to the presence of electron-withdrawing groups (-C=O and -NO₂, respectively).

Please note that without the full structures of the molecules or additional information, it is difficult to provide a definitive answer. The presence of other functional groups or steric effects can also influence the chemical shifts.

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Answer:

In the NBA that's true

The acceleration of the baseball is 500 m/s².

A force is an influence that has the power to alter an object's motion. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull.

The mass of the baseball, m = 0.2 kg

The force acting on the baseball is 100 N.

By Newton's second law of motion,

F = ma

Substituting the values in the above equation,

100 N = 0.2 kg × a

a = 100 / 0.2

a = 500 m/s²

The total mass when the baseball and baseball bat are in contact is:

m = 0.2 + 0.94 = 1.14 kg

Then the acceleration will be:

F = ma

100 = 1.14 × a

a = 87.7 m/s²

The acceleration of the ball after the contact is 500 m/s².

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The permittivity of free space is a fundamental physical constant that describes the ability of a vacuum or free space to permit the passage of electric fields.

The permittivity of free space, often denoted as ε₀ (pronounced "epsilon naught"), is a fundamental physical constant that describes the ability of a vacuum or free space to permit the passage of electric fields. In other words, it is the measure of the resistance that free space offers to the formation of an electric field.

It is a fundamental constant of nature and is one of the defining values of the International System of Units (SI). Its value is approximately 8.85 x 10⁻¹² farads per meter (F/m).

The permittivity of free space plays a crucial role in the study of electromagnetism, and it is used in various equations and formulas that describe the behavior of electric fields, such as Coulomb's law, Gauss's law, and the capacitance of a capacitor. It also helps to determine the speed of electromagnetic waves in free space, which is the speed of light.

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Answer:

43.4 N (newton)

Answer:

False the universe has not always existed the way it does now.

Explanation:

Answer: False

Explanation: The Universe continues to expand even today, growing at a rate of 6.5 light-years in all directions per year as time goes on.

Answer:

5mu = carry a vaulting pole ( 12 m/s) Also

fast

All the vaulter's kinetic energy is transformed into gravitational potential energy. 7.35m is the that person's height.

Kinetic energy is the energy that an object has as a result of its movement. If we want to accelerate an object, we must apply force to it. Using force requires us to put in effort. After work is completed, energy is transferred to the object, and the object moves at a new constant speed.

The two most important factors influencing kinetic energy are mass and speed. Because an object's motion is determined by its velocity as well as its mass, though velocity is th

Given:

v = 12m/s

g = 9.8 m/s²

Kinetic energy = potential energy

K.E = P.E

1/2 mv² = mgH

H = v² /2g

H = 7.35m

Thus, 7.35m is the that person's height.

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The measure of central tendency that should be used to calculate the cutoff time for the final race is the median.

Option C.

The median is the middle point in a dataset—half of the data points are smaller than the median and half of the data points are larger.

To find the median: Arrange the data points from smallest to largest. If the number of data points is odd, the median is the middle data point in the list.

So from the given data of the 100 meter dash, the measure of central tendency that should be used to calculate the cutoff time for the final race is the median.

The median will help to separate half of the data points that are smaller than the cutoff time and half of the data points are larger than the cutoff time.

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Answer:

So the answer would be no, because the medium 1 value must be greater than the value of medium 2.

Explanation:

The value of n1 must be greater than the value of n2.

Medium 1 - Index of Refraction (n1): 1.52  

Medium 2 - Index of Refraction (n2): 1.92

I think that is correct

Answer: microwaves, infrared light, ultraviolet light, X-rays and gamma-rays

Hopes this helps!

Red light

Orange light

Green light

Violet light

Laser light

Bright light

Dim light

Sun light

Answer:

The correct answer is "-1.5 cm".

Explanation:

The given values are:

Object is placed,

u = 2.5 cm

Focal length,

f = 1.5 cm

On applying the lens formula, we get

⇒ \(\frac{1}{u} +\frac{1}{v} =\frac{1}{f}\)

or,

⇒ \(\frac{1}{v} =\frac{1}{u} -\frac{1}{f}\)

On substituting the given values, we get

⇒    \(=\frac{1}{2.5} -\frac{1}{1.5}\)

⇒    \(=\frac{1.5-2.5}{3.75}\)

⇒    \(=\frac{-1}{3.75}\)

⇒ \(v=-3.75 \ cm\)

As we know,

Magnification, \(m=\frac{v}{u}\)

On substituting the values, we get

⇒                           \(=\frac{-3.75}{2.5}\)

⇒                           \(=-1.5 \ cm\)

Answer:

-6 x 10^-6  C

Explanation:

The two spheres will equilibrate to the same charge on each

 -6 x 10^-6 C

The two spheres are touched together and then separated. The total number of excess electrons on sphere A is 3.75×10¹³ electrons after the separation.

Electric charge is the physical property of matter that experiences force when it is placed in electric field. F = qE where q is amount of charge, E = electric field and F = is force experienced by the charge. there are two types of charges, positive charge and negative charge which are generally carried by proton and electron resp. like charges repel each other and unlike charges attract each other. the flow charges is called as current. Elementary charge is amount of charge a electron is having, whose value is 1.602 x 10⁻¹⁹ C.

When the spheres touch together, they obtain equal charges. Since the spheres are same in dimension, they obtain equal charges.

Given,

q₁ = −4.0 × 10⁻⁶ C

q₂ = −8.0 × 10⁻⁶ C

q₁ + q₂ = −4.0 × 10⁻⁶ C + −8.0 × 10⁻⁶ C = -12.0 × 10⁻⁶ C

When two charged spheres touch together, they will have equal amount of charge. Means there attain equilibrium of charge.

Hence each charged sphere will have -6.0 × 10⁻⁶ C  of charge.

The number of excess electrons on both the spheres will be,

(6.0 × 10⁻⁶ C) ÷ (1.6 × 10⁻¹⁹C) = 3.75 × 10¹³

The number 1.6 × 10⁻¹⁹C is called as Elementary charge.

Hence the number of excess electrons on Sphere A is 3.75 × 10¹³.

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The characteristics of the kinematics allow to find the results for the questions about the movement of the body are:

a)  we have four sections;

b)  The acceleration is the first 8 s is:  a = 0.25 m / s²

c) The maximum acceleration is:    a = 1 m / s²

d) The displacement   is:  i) d₁ =  8m,     ii)  \(d_{total}\)= 16 m

e) maximum speed  is:      v = 6 m / s

Kinematics studies the movement of bodies by finding relationships between the position, speed and acceleration of bodies.

        v = v₀ + a t

        y = v₀ t + ½ a t²

where v and v₀ is the current and initial velocity, respectively, a is the acceleration and t is time.

In many circumstances graphs are made for their analysis, in a graph of speed versus time when we have a horizontal line the speed is constant, the acceleration is zero and in the case of a slope there is an acceleration, we have two cases:

Let's answer the different questions about the system.

a) in the attached we have a graph of the velocity versus time, each section corresponds to a change in the slope of the graph, we have four sections;

b) The acceleration is the first 8 s

          v = v₀ + a t

          \(a = \frac{v-v_o}{\Delta t}\)  

          \(a = \frac{2-0}{8-0}\)  

          a = 0.25 m / s²

c) The maximum acceleration is when the slope is maximum.

          \(a = \frac{6-2}{ 14-10}\)  

          a = 1 m / s²

Therefore the acceleration is maximum in the section between 10 and 14 s

d) The total displacement is the sum of the displacements of each section.

         \(d_{total } = d_1 +d_2 + d_3 +d_4\)  

We look for every displacement.

       d₁ = v₀ + ½ a₁ Δt²

       d₁ = 0 + ½ 0.25 8²

       d₁ = 8 m

In the second section the velocity is constant

         d₂ = v₂ Δt₂

         d₂ = 2 (10-8)

         d₂ = 4 m

The third section.

    d₃ = v₀ + ½ a t²

    d₃ = 2 + ½ 1 (14-10) ²

    d₃ = 10 m

The distance of the fourth section.

we look for acceleration

          a₄ = \(\frac{v-v_o}{\Delta t}\)  

          a₄ = \(\frac{0-6}{18-14}\)  

          a₄ = -1.5 m / s²

          d₄ = 6 + ½ (-1.5) (1814) ²

          d₄ = -6 m

The total displacement is;

          \(d_{total}\) = 8 + 4 + 10 -6

          \(d_{total}\) = 16 m

e) The maximum speed is the highest point in the graph of speed versus time that in the attachment we can see corresponds to

          v = 6 m / s

In conclusion using the characteristics of kinematics we can find the results for the questions about the motion of bodies are:

  a)  we have four sections;

b)  The acceleration is the first 8 s is:  a = 0.25 m / s²

c) The maximum acceleration is:    a = 1 m / s²

d) The displacement   is:  i) d₁ =  8m,     ii)  \(d_{total}\)= 16 m

e) maximum speed  is:      v = 6 m / s

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(a) The magnetic field will be 8.49 x 10⁻⁴T

(b) The field is mild in comparison to the one we experienced at 5.1 cm away.

When magnetic field changes with time then it will induce electric field in a closed loop.

A magnetic field is a vector field that describes the magnetic influence on moving electric charges, electric currents, and magnetic materials. It exists the area around a magnet in which the effect of magnetism exists felt.

I = 20KA = 20,000A

r = 5.1 m

how large a magnetic field would you experience =  u.I/2πr

how large a magnetic field would you experience = (4π x10⁻⁷) × 20000/2π × 5.1

Therefore, the magnetic field experienced will be 8.49 x 10⁻⁴T.

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One of Newton's laws is the law of inertia, which states that an object at rest will remain at rest, and an object in motion will remain in motion unless acted upon by an external force.                                                                                                                          

Airbags and seatbelts are important in saving lives because they act as the external force that can stop the motion of an object  in the event of a collision. Without these safety measures, the body would continue to move forward at the same speed as the vehicle, causing serious injuries or even death upon impact. By quickly inflating and creating a cushion, airbags reduce the force of impact and prevent the head and chest from hitting hard surfaces inside the car. Seatbelts, on the other hand, prevent passengers from being thrown out of the car or hitting the dashboard or windshield.
Seatbelts restrain this motion, while airbags provide a cushion to reduce the impact force. Both safety features work together to prevent injuries and save lives.

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Answer: 11 m/s

vinitial=2 m/s

time=3 s

acceleration = 3 m/s^2

vfinal = ?

The key here is that it is a constant acceleration, so we can use the constant acceleration equations. The easiest one to use would be:

vfinal=vinitial + a*t

We need vfinal, so algebraically we are ready to put in numbers into the equation:

vfinal=vinitial + a*t = 2 m/s + (3 m/s^2)*(3 s ) = 11 m/s is the final velocity

The ball's final velocity is 11 m/s

From one of equations of kinematics for linear motion

We have that

v = u + at

Where v is the final velocity

u is the initial velocity

a is the acceleration

and t is the time

From the given information in the question

u = 2 m/s

t = 3 secs

a = 3 m/s²

Putting these parameters into the above formula

v = u + at

We get

v = 2 + (3×3)

v = 2 + 9

v = 11 m/s

Hence, the ball's final velocity is 11 m/s

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Part 1: The number of pathways in a circuit determines the possible routes for electric current to flow.

There are maximum of five pathways in this circuit, depending on its complexity and the arrangement of components.

Part 2: Determining whether the circuit is series or parallel requires more information.

In a series circuit, components are connected in a single path, and the current flows through each component sequentially.

If the circuit has only one pathway (zero or one pathway), it suggests a series circuit.

However, if the circuit has multiple pathways (two or more pathways), it indicates a parallel circuit.

To conclusively determine the circuit's nature, we need to analyze the circuit diagram or obtain additional details regarding the component connections and their interactions.

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Here is a problem.

Problem:-

A car of mass 1700kg accelerated with a rate of 17m/s^2. find the force applied on it.

Extra:-

F=ma is. the famous formula of Sir Eizak Newton

All we need to do in order to find out the direction is to take into account the sign of the charge. As they are both positive, the particles will repel each other, which can be seen on the following drawing:

Thus, particle q2 will try to push particle q1 to the left

The answer is: -

Answer:

Las células del interior son negativas, mientras que en el exterior son positivas.

Explanation:

Que tenga un buen día :)

Weather forecasts are made using barometers. An air pressure gauge, or barometer When the barometer reads "rising," the air pressure is rising; when it reads "falling," the air pressure is lowering.

Barometric pressure, to put it simply, is the measurement of air pressure in the atmosphere, more particularly, the measurement of the weight exerted by air molecules at a certain location on Earth.

barometer, a tool for calculating atmospheric pressure. A barometer may also be used to determine height since air pressure varies with elevation above or below sea level. Mercury and aneroid barometers are the two primary varieties.

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Answer:

This means that the strength of the magnet increases with increasing number of turns in the coil.

Explanation: We can say that, the strength of the electromagnet is directly proportional to the number of turns in the coil. If you double the number of turns, you double the strength of the electromagnet.

Answer: Noise above 70 dB can cause hearing damage

Explanation:

Answer:

The decibel level that starts to have hearing damage is 120 dB.

Explanation:

I have read it in the ncert science book

That any material charged with the same energy they repels each other while if they have opposite energy they attracts each other.

Hope it helps.

Please Mark as brainliest

Answer:

The net force is directed toward the center of the circular path.

The average velocity of the boat is -2.0 km/h, which means the boat was moving southward. Given, Distance moved due north, d₁ = 3.0 km and Distance moved due south, d₂ = 1.0 km.

Time taken to complete the trip, t = 1/2 h

We know that the average velocity of an object is given by the ratio of the total displacement to the total time taken to cover that displacement.

Mathematically, the average velocity is given as : v = (d₂ - d₁) / t

Where, v is the average velocity, d₁ and d₂ are the distances moved in the opposite direction

t is the time taken to cover the entire distance

Now, substituting the given values in the above formula, we get:

v = (1.0 km - 3.0 km) / (1/2 h)

= -2.0 km/h

Thus, the average velocity of the boat is -2.0 km/h, which means the boat was moving southward.

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