when a nucleus of 235u undergoes fission, it breaks into two smaller, more tightly bound fragments. - Calculate the binding energy per nucleon for ^235U? (Express with appropriate units)- Calculate the binding energy per nucleon for the fission product ^137 Cs? (Express in appropriate units)

Answers

Answer 1

The binding energy per nucleon of 235-U and 137-Cs is given below when a nucleus of 235u undergoes fission

235-U = 7.6 MeV

137-Cs = 8.39 MeV

What is the 235-U and 137-Cs nucleons' binding energy?

The following equation gives a nucleus' binding energy:

mc2 = BE, where BE is the binding energy.

m is a mass defect.

For 235U, c = 931.49 MeV/u is the speed of light.

A=235 m=1.9150664 BE=1.9150664 *931.49 MeV/u BE=1783.8648 MeV

The equation BE/A BE/A = 1738.648 MeV / 235 BE/A = 7.6 MeV determines the binding energy per nucleon.

Binding energy for 137-Cs is:

BE = 1.23383 u * 31.49 MeV/u, where m is the mass defect, giving 1149.3003 MeV.

The binding energy per nucleon, BE/A, is as follows:

A is 137 in the instance of 137-Cs, hence BE/A equals 1149.3003 MeV / 137 BE/A is 8.39 MeV.

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Related Questions

what do the sublevel designations s, p, d, and f specify with respect to the atom's orbitals?

Answers

In particles, electrons circle in shells comparing to principle quantum number n. In expanding request of n, the shells are named K, L, M, N, O, P, ...

For a shell of guideline quantum number n, there are subshells comparing to orbital quantum numbers (lowercase L) l = 0, 1, 2, ... , n - 1. Their names are s,p,d,f,... in expanding request of l.

Besides, for every l, there are 2l+ 1 potential attractive quantum numbers ml = 0, ±1, ±2, ... , ±l.

Each state (n,l,[tex]m_l[/tex]) can be involved by up to 2 electrons greatest, which should have  opposite spins (Pauli Exclusion Principle).

Likewise, there is a documentation called spectral notation for electron configuration. I'm certain you have seen it.

It is a succession of one metal more orbitals with their electron includes in the structure

[shell number][subshell name][tex]^[number of electrons][/tex]

Model, [tex]1s^22s^22p^6[/tex] for Neon implies 2 electrons in subshell s of the n=1 shell, 2 electrons in subshell s of the n=2 shell, and 6 electrons in subshell p of the n=2 shell. The just subshell for n=1 and both subshells for n=2 are completely filled and no electrons possess n>2 here, accordingly making  Neon inert (Noble gas).

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8) why can we not determine distances to galaxies by the same method used to measure the parallaxes of stars?

Answers

They are so distant that the parallax is too small to be measured since parallax varies inversely with distance.

Parallaxes can be measured accurately out to distances of approximately 100 light-years. The nearest galaxies are about 50,000 to 80,000 light-years from the Sun. Therefore, there is no perceptible change in the apparent position of any galaxy as we view it from opposite sides of Earth's orbit.

Because of the influences of the Earth's atmosphere, it is highly challenging to estimate parallax angles of less than 0.01 arcsec from Earth. Due to this, telescopes on Earth can only measure the distances to stars that are 1/0.01 or 100 parsecs distant.

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Calculate the work done by the electrostatic field in moving a charge of 2 coulomb from one point to another, if the potential of the first point is 20V, and the second - (5V)

Answers

Answer:

To calculate the work done by the electrostatic field in moving a charge from one point to another, you can use the formula:

work = charge * (final potential - initial potential)

In this case, the charge is 2 coulombs, the initial potential is 20V, and the final potential is -5V. Plugging these values into the formula, we get:

work = 2 coulombs * (20V - (-5V))

= 2 coulombs * (25V)

= 50 Joules

Therefore, the work done by the electrostatic field in moving the charge from one point to another is 50 Joules.

Joe pushes down the length of the handle of a 12.9 kg lawn spreader. The handle makes an angle of 41.7◦ with the horizontal. Joe wishes to accelerate the spreader from rest to 1.39 m/s in 1.7 s. What force must Joe apply to the handle? Answer in units of N.

Answers

Answer:

Below

Explanation:

Only the HORIZONTAL force ,  F cos 41.7   moves the spreader forward

 The acceleration = change in V / change in t = 1.39/1.7 = .818 m/s^2

F = m * a

F cos 41.7 = 12.9 * .818        shows F = 14.12  N

2. a student places an object with a mass of m on a disk at a position 0.2m from the center of the disk. the student starts rotating the disk. when the disk reaches a speed of 0.8 m/s, the object starts to slide off the disk. what is the coefficient of static friction between the object and the disk? (4 pts)

Answers

The coefficient of static friction when the speed of the disk is given, is calculated to be 0.065 / r.

The maximum velocity of an object moving in a curve beyond which it will slide off the curve is given by the relationship,

v = √(μ* g* r) ----(1)

where  is the coefficient of friction between the object and the surface of the curve, g is acceleration due to gravity and r is the radius of the curve.

Given that,

v = 0.8 m/s

g = 9.8 m/s²

r = ?

μ = ?

Making μ as subject, we have,

μ = v²/(g*r) ----(2)

As we were not given the value of r, we can just substitute other known values, then solve and leave the answer in terms of r.

μ = (0.8)²/(9.81* r) = 0.64/ (9.81* r) = 0.065 / r

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14) (10 pts) a series lr circuit contains an emf source of having no internal resistance, a resistor, an inductor having no appreciable resistance, and a switch. i) (6 pts) if the emf across the inductor is of its maximum value after the switch is closed, what is the resistance of the resistor?

Answers

The resistance of the resistor is 1.8Ω

Consider the voltage across the inductor 4 sec after the switch is closed is V(4)

The voltage across the inductor 4 sec after the switch is closed is 80%  of its maximum value, i.e., V(4)=0.8[tex]V_{0}[/tex]

Consider the expression for the voltage across the RL circuit.

V(t)=[tex]V_{0}e-\frac{t}{T}[/tex]

Where [tex]V_{0}[/tex] is the maximum voltage, t is the time, V(t) is the voltage at time

t and T is the time constant.

Substitute the values of ,[tex]V_{0}[/tex], V(t) and t in the above expression.

[tex]$$\begin{aligned}0.8 \mathrm{~V}_0 & =\mathrm{V}_0 \times \mathrm{e}^{-\frac{4}{\tau}} \\0.8 & =\mathrm{e}^{-\frac{4}{\tau}} \\\frac{1}{0.8} & =\mathrm{e}^{\frac{4}{\tau}}\end{aligned}$$[/tex]

Take natural log on both the sides.

[tex]$$\ln \left(\frac{1}{0.8}\right)=\frac{4}{\tau}$$[/tex]

Rearrange the above expression.

[tex]$$\begin{aligned}\tau & =\frac{4}{\ln \left(\frac{1}{0.8}\right)} \\& =17.9 \mathrm{~s}\end{aligned}$$[/tex]

Now consider the expression for time constant.

[tex]$$\tau=\frac{\mathrm{L}}{\mathrm{R}}$$[/tex]

Where R is the inductance and L is the resistance.

Rearrange the above expression.

R = [tex]\frac{L}{T}[/tex]

Substitute the values of T and L in the above expression.

[tex]R=\frac{34}{17.9}\\ R=1.8[/tex]Ω.

Therefore, the resistance of resistor is 1.8Ω

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A ball is kicked with an initial horizontal velocity of 3.6 m/s off of a 19.6 m cliff. How
far away will the ball land from the cliff?

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If a ball is thrown at an initial horizontal velocity of 3.6 meters per second off of a cliff that is 19.6 meters high, it will land 35.28 meters away from the cliff.

What is velocity?

The vectoral expression of a particle and object's motion with respect towards time is called its velocity. The recognized unit for measuring magnitude of velocity is indeed the meters per second (m/s), which is frequently referred to as speed. Velocity is the rate at which an object's position is changing as perceived from a particular point of view and so as measured by a certain unit of time. It refers to the direction speed of the an object in motion.

How do you calculate velocity?

Average speed is calculated by dividing a quantity by the time required to obtain that quantity. Speed in the SI is expressed in m / sec. The average speed (S) is calculated using the equation S = d/t, where d is the entire distance traveled and t denotes the total time. One can determine an object's beginning velocity by dividing the time it took the thing to go a specific distance by the total distance.

Briefing:

D = (1/2) gt2 where g = 9.8 m/s2

It takes time to descend the 19.6-meter cliff.

19.6 = 1/2(9.8)t2

19.6/4.9 = t2

Square root 90.4 = about 9.8 sec.

3.6 m/s x 9.8 sec = 35.28 m

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a grandfather clock is running slow. the period of its pendulum is too long. to shorten the period and make the clock run faster, you should.

Answers

Running slowly is a grandfather clock. Its pendulum has an excessively lengthy period. You can speed up the clock by cutting the period in half. To do this, reduce the pendulum's length.

In order to allow it to freely swing, a weight is suspended from a pivot like a pendulum. The restoring force from gravity will cause a pendulum to accelerate back toward its equilibrium position when it is sideways moved from its resting, equilibrium position. The pendulum swings back and forth about the equilibrium position after being freed due to the restoring force acting on its mass. The period is the length of time required for one full cycle, which includes both a left and right swing. The length of the pendulum and, to a lesser extent, its amplitude, or swing breadth, both affect the period.

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an object has a kinetic energy of 36.0 j. an object with three times the mass moving at the same speed will have a kinetic energy of

Answers

The kinetic energy of another body having three times the mass of the given object will be 108 J

Kinetic energy-In physics, the kinetic energy of an object is the energy  it has due to  motion. It is defined as the work required to accelerate a body from a given mass from rest to a specified speed.

The kinetic energy of a body is given by [tex]K.E= \frac{1}{2}Mv^{2}[/tex] (first equation)

Given K.E= 36J

Now the mass of second body is m=3M

also the second body is moving with the same speed v

So kinetic energy of second body K.E₂= [tex]\frac{1}{2}mv^{2} =\frac{1}{2}(3M)v^{2}[/tex]=36×3

=108J (from first equation)

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Prove the property a × b = − b × a of this theorem. Let a = a1, a2, a3 and b = b1, b2, b3 . Then a × b = __ = (−1) __ =− b × a.

Answers

If a = a1, a2, a3 and b = b1, b2, b3 . Then [tex]& \vec{a} \times \vec{b}=(-1)(\vec{b} \times \vec{a})[/tex] Or [tex]& \vec{a} \times \vec{b}=-\vec{b} \times \vec{a}[/tex]

As per the details share in the above question are as bellow,

The provided data are follow,

The product of two or more integers that remain the same, regardless of the sequence in which they are multiplied, is referred to as the commutative property formula for multiplication. The commutative property formula for multiplication is (A x B) = (B x A).

Let us consider, Let a = a1, a2, a3

And b=b1, b2, b3

We have the property that a × b = − b × a.

Then a × b = __ = (−1) __ =− b × a.

[tex]& \vec{a}=a_1 i+a_2 j+a_3 k \\ \vec{b}=b_1 i+b_2 j+b_3 k[/tex]

Then,

[tex]$$\vec{a} \vec{x} \vec{b}=\left|\begin{array}{ccc}i & j & k \\a_1 & a_2 & a_3 \\b_1 & b_2 & b_3\end{array}\right|$$[/tex]

[tex]$$=i\left(a_2 b_3-a_3 b_2\right)+j\left(a_3 b_1-a_1 b_3\right)+k\left(a_1 b_2-a_2 b_1\right)$$[/tex]

So further we get,

[tex]& =i\left(b_2 a_3-a_2 b_3\right)+j\left(a_1 b_3-a_3 b_1\right)+k\left(a_2 b_1-a_1 b_2\right) \\& =-\left[i\left(a_2 b_3-a_3 b_2\right)+j\left(a_3 b_1-a_1 b_3\right)+k\left(a_1 b_2-a_2 b_1\right)\right.[/tex]

So, we get,

[tex]\vec{a} \times \vec{b}=\left[i\left(a_2 b_3-a_3 b_2\right)+j\left(a_3 b_1-a_1 b_3\right)+k\left(a_1 b_2-a_2 b_1\right)\right.[/tex]

We get,

[tex]& \vec{b} \times \vec{a}=-[\vec{a} \times \vec{b}][/tex]

Or [tex]& -\vec{b} \times \vec{a}=\vec{a} \times \vec{b}[/tex]

Then,

[tex]& \vec{a} \times \vec{b}=(-1)(\vec{b} \times \vec{a})[/tex]

Or [tex]& \vec{a} \times \vec{b}=-\vec{b} \times \vec{a}[/tex]

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find the work done by a force of 12 newtons at 25 degrees pulling an object 10 meters up a ramp inclined at 4 degrees

Answers

The work done by a force is 40.14 J

The work done is calculated to include both the force applied to the body and the overall movement of the body. There is a constant force F in front of this block. The purpose of this force is to move an object a certain distance d in a straight line in the direction of the force.

The cart is lifted to a height, h:

h = (10meters) ×sin(4) = 0.69 m

The force in the vertical direction is:

Fy = 12N×sin(29o) = 58.177N

Work = F×d = (58.177)×(0.69) = 40.14 joules

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Jimi is pushing a large cart at work toward the left side of the store using 10N of force. His friend Jonah comes up and pushed the cart with 8 N of force toward the right side of the store. What is the net force and direction of the cart

Answers

The net force acting on the cart is 2 N in left direction.

What is force?

The definition of force in physics is: The push or pull on a massed object changes its velocity.

An external force is an agent that has the power to alter the resting or moving condition of a body. It has a direction and a magnitude. Newton is the SI unit of force.

Jimi is pushing a large cart at work toward the left side of the store using 10N of force.

Jonah pushed the cart with 8 N of force toward the right side of the store.

Hence, the net force acting on the cart in left direction = ( 10 N - 8 N) = 2 N.

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which construct can be used in a shell script to read standard input and place it in a variable?

Answers

We use a construct that can be used in a shell script the read built-in Bash command to read user input. It assigns user input to the variable after receiving it. It simply takes one line from the Bash shell to read. The syntax for implementing it is listed below.

read <variable_name>  

What is the read bash command?

A built-in tool in Bash allows you to read text from standard input. The utility provides a wide range of user input reading capabilities that assist make Bash scripts interactive. Through various examples and use situations, this article demonstrates how the Bash read command functions. access to a terminal or command line.

The "read" command in Bash scripting is used to get human input. It's essential to comprehend the "read" command if you want to make your code more interactive. The "read" command is used to retrieve user-inputted data. This article demonstrates how to communicate with users using Bash's "read" command.

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a wire carries an electric current straight upward. what is the direction of the magnetic field due to the current north of the wire

Answers

The current north of the wire fliws upwards as of the electric current straight upward.

The proper-hand thumb rule suggests the path of the magnetic area for a recognise path of the modern-day. If the thumb of the proper-hand factors alongside the path of modern-day then the curled arms of that hand offers the path of the magnetic area because of the modern-day.

The path of the magnetic area is perpendicular to the twine and is withinside the path the arms of your proper hand might curl in case you wrapped them across the twine together along with your thumb withinside the path of the modern-day.A vertical twine wearing a modern-day withinside the upward path is located in a horizontal magnetic area directed toward north.

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If a man hoot a pear at a place where he ee the fih inide water i it poible that it will hit the fih?

Answers

The pear will not hit the fish where he eyes the fish in the water.

Please note that fish in the water will not be the same as what our eyes see. Where the location of the position will be different because it follows the refraction of light obtained so that it can be concluded that the position of the fish is not the actual position. The fish swims forward and the shooter looks at the water from above as if the fish is looking up.

This event is caused by the process of refraction of light. Refraction is the deflection of the direction of propagation of light when it enters a medium of different densities.

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what is the electric flux through the surface shown in the figure? assume that e=300n/c.

Answers

Electric flux through the surface is [tex]1.5 Nm^2/C[/tex].

As per the detail share in the above question are as bellow,

Given an area A with a unit normal vector n, the electric flow through that region is given by Φ = E.(An) = |E|Acosθ

Where angle between vectors E and n =θ .

Also Magnitude of E = |E|

When the magnitude of n is |n| = 1

The normal n and the electric field vector E make an angle of,

θ = 90 - 30 = 60 degrees,

Therefore magnitude of,

|E| = 300N/C

And A= 0.1 x 0.1 = 0.01 m.

Thus,

Φ = |E|Acosθ

Substitute the value in above equation we get,

=300 x 0.01 x cos(60)

=3 x 0.5

[tex]= 1.5 Nm^2/C[/tex]

Electric flux=Φ=[tex]1.5 Nm^2/C[/tex]

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Note : The correct question would be as follow,

what is the electric flux through the surface shown in the figure? assume that e=300n/c.

What is the rest mass m of a particle traveling with the speed of light in the laboratory frame. Express your answer in MeV/c? to one decimal place.

Answers

The rest mass m of a particle traveling with the speed of light in the laboratory frame is 0.

We know that, formula for mass of object can be given by:

m= [tex]\frac{m_{0} }{1-\sqrt{v^{2}/c^{2} } }[/tex]

where

m = mass of object

[tex]m_{0}[/tex] = rest mass

v = speed of the particle

c = speed of light

By Modifying this equation we get :

Given speed of particle is equal to speed of light.

i.e. v = c.

Putting this value in above equation we get [tex]m_{0}[/tex] =0.

Therefore, the rest mass  of a particle traveling with the speed of light in the laboratory frame is 0.

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if a 5 mhz sound wave is traveling in fat, air, muscle, and bone, which medium will have the shortest wavelength?

Answers

The medium with the shortest wavelength, if a 5 MHz sound wave is going through fat, air, muscle, and bone, is air.

The slowest sound speed is in air. The density and elasticity of the medium through which sound travels affects its speed. In general, sound travels more quickly through solids than through gases and liquids. The faster sound travels through a medium, the more elastic and less dense it is. Solid objects transmit sound the fastest. This is because sound waves can travel faster than through a solid medium through a liquid or gas because its molecules are so close together. In actuality, sound waves move over 17 times more quickly in steel than air. So as speed increases wavelength increases. Hence the speed of sound in air is lowest compare to other mediums. Therefore the air will have shortest wavelength of sound.

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uppose that a flat loop of wire with an area of 0.050 m2 lies in a magnetic field normal to the loop. if the magnetic field changes at a uniform rate from 0.30 t to 1.5 t it induces an emf of 1.2 volts in the loop. find the time interval for the change. group of answer choices 0.023 sec 0.050 sec 0.073 sec 0.085 sec

Answers

When we calculate a function's average rate of change over a certain interval, we are computing the average number of units that the function moves up or down per unit along the xx-axis.

Given the function and interval of interest (f(x)f(x) and [x ₁,x₂]), [x\s​₁,x₂ ]), our first step is to compute the value of our function at both ends of the interval. Then we plug those numbers and the interval's ends into our algorithm to calculate the average rate of change.

The average rate of change formula is

{x₂-x₁}

x f = x₂ x 1 f(x₂ )

​​within the interval [x₁,x ₂][x ₁,x ₂ ].

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where are elliptical galaxies most likely to be found? in the central regions of clusters on the outskirts of clusters in small clusters in between clusters

Answers

Elliptical galaxies most likely to be found in the central regions

Galaxies with an elliptical form are known as elliptical galaxies. Since an ellipse has an oval shape, these galaxies also have an oval shape. Elliptical galaxies are those with little to no gas and dust. The elliptical galaxies are the most abundant type of galaxies. Elliptical galaxies are most likely to be found in the central regions of galaxy clusters. Galaxy clusters are large groups of galaxies that are bound together by gravity and are some of the largest structures in the universe.

Elliptical galaxies are characterized by a lack of distinct features, such as spiral arms or a visible nucleus. These galaxies are thought to have formed through the merger of smaller galaxies and are generally found in high-density environments such as the centres of galaxy clusters. They are less common on the outskirts of galaxy clusters and are rarely found in small clusters or in between larger clusters.

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The gravitational force of a lunar rover is 1,607.2 Newtons on Earth. What will the rover’s gravitational force be on the Moon?

On Earth, g = 9.8m/s2.
On the Moon, g = 1.62 m/s2.

Answers

Answer: Fg = 265.68 N

Explanation:

Fg = m * g

m = Fg / g

m = 1607.2 N / 9.8 m/s^2

m = 164 kg

Fg = m * g

Fg = 164 kg * 1.62 m/s^2

Fg = 265.68 N

a sinusoidal transverse wave is traveling on a string. any point on the string: a) moves in the same direction as the wave b) moves in simple harmonic motion with a different frequency than that of the wave c) moves in simple harmonic motion with the same angular frequency as the wave d) moves in uniform circular motion with a different angular speed than the wave e) moves in uniform circular motion with the same angular speed as the wave

Answers

There is a transverse sinusoidal wave on a string that flows in a straightforward harmonic fashion and has an angular frequency that matches the wave. (Chose c.)

How physically act waves?

An energetic disturbance called a wave moves from one place to another. Every time a wave moves, energy is changed, regardless of the change. The substance through which a wave passes is known as the medium. Back and forth oscillations occur repeatedly in that medium.

How could waves be described?

A wave is a disruption or variation that progressively moves energy from one location in a medium to another. It could manifest as an elastomeric deformation or a shift in pressure, magnetic or electric field strength, electric potential, or temperature.

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patricia places an electrically charged object next to an uncharged object to see what will happen. for her experiment, what control does she need?

Answers

A negative object so it takes in the charge object and nothing will happen until something else would touch it.

what is the charge?

Electric charge is the property of a material that makes it feel a force when subjected to an electromagnetic field. Protons and electrons most typically carry positive and negative charges, which are the two forms of electric charges.

What does "unit of charge" mean?

The basis of the SI system of physical units is the coulomb It is referred to as C. A coulomb is the unit of power that a one-ampere current can carry in one second.

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a convex lens has a focal length fff . an object is placed at a distance between fff and 2 fff on a line perpendicular to the center of the lens. the image formed is located at what distance from the lens?

Answers

The image will be formed beyond 2f if the object has been kept between f and 2f in a convex lens.

Any converging lens is referred to as a convex lens.

A lens that converges light rays that are moving parallel to its main axis is known as a converging lens or convex lens.

The distance between a lens's center and its focus is known as the focal length, or f, of a lens.

When an item is positioned along a line perpendicular to the center of the lens, between infinity and twice the object's distance from the focal point,

The image will be situated between the focal point, f, and twice the focal point's distance, 2f.

Consequently, for an object positioned along a line perpendicular to the center of the lens between infinity and 2f.

The image created by a convex lens when an item is positioned between F and 2F is magnified, real, inverted, and beyond 2F.

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if particle 3 is of unknown charge is to be located such that the net electrostatic charge from particles 1 and 2 is zero, what must be the x and y coordinates

Answers

For the distance between q 3 and q 1, the formula is: = 3 L 0 = 3 1 L = 3 1 10 cm 14 cm. Q3 should therefore be positioned at x=14 cm along the x-axis.

For q 3, there is no equilibrium position.

​between two fixed changes because one is pulling it and the other is pushing it

L is set at 10 cm, and L 0 is taken to be positive. We cancel k and q 3 and set this equal to zero as the problem specifies. As a result, we get L 0.

​∣q 1\s​\s ∣\s​\s − \s(L+L \s0\s​\s)\s∣q \s2\s​\s ∣\s​\s =0 ⇒(\sL \s0

​L+L \s0\s​

​\s ) \s2\s = \s∣\s∣\s∣\s∣\s∣\s​

q \s1\s​

q \s2\s​

∣\s∣\s∣\s∣\s∣\s​\s = \s∣\s∣\s∣\s∣\s∣

​+1.0 μC\s−3.0 μC

​=3.0 results in L 0 after taking the square root.

​L+L \s0\s​

For the distance between q 3 and q 1, the formula is: = 3 L 0 = 3 1 L = 3 1 10 cm 14 cm. Q3 should therefore be positioned at x=14 cm along the x-axis.

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. a single strand of wire of adjustable length is wound around the circumference of a round balloon that has a diameter of 21.0 cm. a uniform magnetic field with a magnitude of 2.00 t is perpendicular to the plane of the loop. if the balloon is blown up such that its diameter and the diameter of the wire loop increase to 31.0 cm in 0.036s, what is the magnitude of the average value of the emf induced in the loop?

Answers

The magnitude of the average value of the emf induced in the loop is 2.26 V.

The initial area of wire loop is:

A(initial) = π d² / 4

             = 3.14 × ( 0.21 m )² / 4

             = 0.0346 m²

And, The wire loop's final location is at:

A(final) =  π d² / 4

           = 3.14 × ( 0.31 m )² / 4

           = 0.0754 m²

It is given that the magnetic field is normal to the loop of wire.

Therefore, angle made by the magnetic field with the normal to the loop

is :

θ = 0°

Applying Faraday's law, the average emf induced in the loop is:

ε = B × ( A(final) - A(initial) ) × cosθ / Δt

ε = 2.00 T × ( 0.0754 - 0.0346 ) m² × cos0° / 0.036 s

ε = 2.26 V

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the intensity levels of two people's speech are 60.5 db and 65.5 db, respectively. what is the intensity level of the combined sounds?

Answers

the intensity level of the combined sounds is 67.76 dB

Calculation :

Sound Intensity level L= 63 dB

We know L = 10 log(I/Io)

63 = 10 log(I/Io)

6.3 = log (I/Io)

I /Io = [tex]10^{6.3}[/tex]

I = [tex]10^{6.3}[/tex] Io

= [tex]10 ^{6.3 }[/tex]x [tex]10 ^{-12}[/tex]

= [tex]10^{ -5.7}[/tex] W/m 2

  = 1.995 x[tex]10 ^{-6}[/tex] W/m 2

Sound Intensity level L '= 66 dB

We know L ' = 10 log(I '/Io)

66 = 10 log(I '/Io)

6.6 = log (I'/Io)

I ' /Io = [tex]10 ^{6.6}[/tex]

I ' =  [tex]10 ^{6.6}[/tex] Io

=  [tex]10 ^{6.6}[/tex] x [tex]10 ^{-12}[/tex]

= [tex]10 ^{-5.4}[/tex]W/m ^2

  = 3.981 x[tex]10 ^{-6}[/tex] W/m^ 2

Combined intensity I " = I + I ' = 5.976 x10 -6 W/m 2

the intensity level of the combined sounds L " = 10 log(I" / Io)

 L " = 10 log [( 5.976 x[tex]10 ^{-6}[/tex] )/([tex]10 ^{-12}[/tex] ) ]

      = 10 log [5.976 x10 6]

      = 10(6.776)

      = 67.76 dB

Intensity is the amount of energy a wave transports in one unit of area per unit time and is also equal to the energy density multiplied by the wave velocity. Usually measured in watts per square meter. Intensity depends on wave strength and amplitude.

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Which of the following is a true statement?

Answers

How closely packed the electric field lines are indicates the strength of the electric field (C) is the correct answer.

you're in a boat with a big rock, in a swimming pool. you toss the rock overboard. what happens to the level of the water in the pool?

Answers

You're in a boat with a big rock, in a swimming pool. You toss the rock overboard. Level of water will increase as of the mass of big rock to the level of the water in the pool.

The buoyancy of any floating object partially or totally submerged in a fluid can be computed thanks to Archimedes' principle. The weight of the thing alone exerts a downward mass on it. The upward or buoyant force acting on the object is what is meant by the aforementioned Archimedes' principle. The difference between the buoyant force and the object's weight is therefore the net force acting on it. In the event that this net force is positive, the item will rise; in the event that it is negative, the object will sink; and in the event that it is zero, the object will be neutrally buoyant, remaining stationary. Simply said, when a body is partially or entirely submerged in a fluid, the Archimedes' principle applies. Consider a cuboid submerged in a fluid, with its top and bottom facing in the direction of gravity, which is considered to be constant throughout the length of the cube. Each face of the fluid will experience a normal force, but only the normal forces on the top and bottom will result in buoyancy. The height directly affects the pressure difference between the top and bottom faces (difference in depth of submersion). A net force on the cuboid is created by multiplying the pressure difference by the area of a face.

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a solenoid of length 2.50 cm and radius 0.550 cm has 45 turns. if the wire of the solenoid has 1.15 amps of current, what is the magnitude of the magn

Answers

According to the given statement 11.38 T is the magnitude of the magnetic field inside the solenoid.

What is vector and magnitude?

By using the symbol |v|, the strength of a vector theorem can be utilized to determine the length for such a given vector (let's say v). This amount is essentially the distance between the vector's beginning point and ending point. The range calculation, which we will go over in this section, is used to determine the vector's magnitude.

Briefing:

Length of solenoid, L = 2.5 cm = 0.025 m

Radius of solenoid, r = 0.55 cm = 0.0055 m

Number of turns, N = 45 turns

Current, I = 1.15 A

Magnetic field, B, is given as:

B = (N*r*I) /L

B = (45 * 0.0055 * 1.15)/0.025

B = 11.38 T

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The complete question is-

A solenoid of length 2.50 cm and radius 0.550 cm has 45 turns. If the wire of the solenoid has 1.15 amps of current, what is the magnitude of the magnetic field inside the solenoid?

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