Why is electric power transmitted at high voltage?.

Before the collision, the two balls' total momentum is

(1 kg) (+1 m/s) + (1 kg) (-1 m/s) = 0

After the collision, the combined balls have velocity v such that

(1 kg + 1 kg) v = 0

since momentum is conserved. Equivalently,

(2 kg) v = 0

It follows that v = 0, meaning after impact the balls are stuck together and motionless.

According to the work-energy theorem, the net work done on an object equals its change in kinetic energy. In the case of a horizontal force and displacement, the work done by the force is equal to the change in the kinetic energy of the object.

Mathematically, the work done by a constant horizontal force F over a displacement d is given by:

W = Fd cos(theta)

where theta is the angle between the force vector and the displacement vector. If the force is horizontal, then theta is 0 degrees, and the cosine of 0 is 1, so the equation simplifies to:

W = Fd

The change in kinetic energy of an object of mass m moving with a velocity v is given by:

ΔK = 1/2 mv^2 - 1/2 mv0^2

where v0 is the initial velocity of the object. If the object starts from rest, then v0 is 0, and the equation simplifies to:

ΔK = 1/2 mv^2

Thus, we can equate the work done by the force to the change in kinetic energy of the object:

W = ΔK

Fd = 1/2 mv^2

This relationship shows that the work done by a horizontal force over a displacement is equal to the change in kinetic energy of the object. If the force and displacement are not perpendicular to the force of gravity, then the gravitational potential energy of the object will also change. In this case, the work done by the force will equal the change in both the kinetic energy and the gravitational potential energy of the object:

W = ΔK + ΔU

where ΔU is the change in gravitational potential energy. The total work done by the force will be the sum of the work done on the object to change its kinetic energy and the work done to change its gravitational potential energy.

*IG:whis.sama_ent

Answer:

Frequency = 25 Hz

Time period = T

we know that ,

frequency = 1/ T

25 = 1/T

25 T = 1

T = 1/25

= 0.04 sec

Explanation:

Answer:

Explanation:

Load ( L ) = 800 N

Effort ( E ) = 200 N

Load distance ( LD ) = 10 cm

Effort distance ( ED ) = ?

now, Let's find the effort distance:

\( \mathsf{L \times LD = E \times ED}\)

Plug the values

\( \mathsf{800 \times 10 = 200 \times ED}\)

Multiply the numbers

\( \mathsf{8000 = 200 \: ED}\)

Swipe the sides of the equation

\( \mathsf{200 \: ED = 8000}\)

Divide both sides of the equation by 200

\( \mathsf{ \frac{200 \: ED }{200} = \frac{8000}{200} }\)

Calculate

\( \mathsf{ED \: = \: 40 \: cm}\)

Hope I helped!

Best regards!

1. The height of the image is 0.287 m.

2. The wavelength of the light is 563 nm.

1. The image distance, denoted as `i`, is determined by the lens formula: `1/f = 1/o + 1/i`, where `f` represents the focal length, `o` is the object distance, and `i` represents the image distance. Given `f = 28.3 cm` and `o = 1.78 m`, we need to convert the object distance from meters to centimeters: `o = 1.78 m = 178 cm`. Therefore, the image distance is calculated as follows:

i = (1/f - 1/o)^-1 = (1/28.3 - 1/178)^-1 = 24.53 cm.

The image height, denoted as `h'`, can be determined using the object height `h` and the magnification `m` relationship: `h' = m * h`. The magnification `m` is given by `m = -i/o`, where the negative sign indicates an inverted image. Thus,

m = -i/o = -(24.53 cm)/(178 cm) = -0.138.

The image height `h'` is obtained by multiplying `h` by `m`: `h' = m * h`, where `h = 2.08 m`. Therefore,

h' = (-0.138) * 2.08 = -0.287 m.

The negative sign signifies an inverted image. Hence, the height of the image is determined as `0.287 m`, and it is inverted.

2. Bright fringes are observed at angles `theta` satisfying the condition `d sin theta = m lambda`, where `d` represents the spacing between two slits, `m` is an integer indicating the fringe order, and `lambda` denotes the wavelength of light. In this case, given `d = 1/20 mm` and `m = 1`, the angle `theta` corresponding to the first bright fringe is given by `tan theta = x/L`, where `x` represents the separation between two fringes, and `L` is the distance from the grating to the screen. With `x = 27.2 mm` and `L = 2.41 m`, we can calculate:

tan theta = (27.2 mm)/(2.41 m) = 0.01126.

Therefore, `sin theta = tan theta = 0.01126`.

Consequently, the wavelength `lambda` is determined using the formula `lambda = d sin theta / m`, where `d = 1/20 x 10^-3 m`, `sin theta = 0.01126`, and `m = 1`:

lambda = (1/20 x 10^-3 m) x 0.01126 / 1 = 5.63 x 10^-7 m = 563 nm.

In summary:

1. The height of the image is 0.287 m.

2. The wavelength of the light is 563 nm.

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Answer:

Work = force • distance

so (input) 400 • 6 = 2400 joules.

and (output) 500 • 4 = 2000 joules

and efficiency = output energy ÷ input energy

so 2000 ÷ 2400 = 83%

input energy = 2400 joules

output energy = 2000 joules

efficiency = 83%

The speed of propagation of the wave is 1.59 m/s. Therefore the correct option is B. 1.59 m/s

The given wave function is y(x, t) = 3 m sin((0.628 rad/m) x - (1 rad/s) t). To determine the speed of propagation of the wave, we can use the formula v = λf, where v is the speed, λ is the wavelength, and f is the frequency.

To find the wavelength, we can use the formula λ = 2π/k, where k is the wavenumber. In this case, k is given as 0.628 rad/m. Substituting the value of k into the formula, we get λ = 2π/0.628 rad/m = 10 m.

Next, we can find the frequency using the formula f = ω/2π, where ω is the angular frequency. The angular frequency is given as ω = 1 rad/s. Substituting the value of ω into the formula, we get f = 1/2π Hz.

Finally, we can calculate the speed of propagation of the wave using the formula v = λf. Substituting the values of λ and f, we get v = 10 m x 1/2π Hz = 1.59 m/s.

Therefore, the speed of propagation of the wave is 1.59 m/s, which corresponds to option B) in the given options. The units of speed are indeed m/s, verifying the correctness of the answer.

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Answer:  The location of the image is -5.2cm

Answer:

What part of the Compromise of 1850 was most wanted by the South

California

Oversea slave trade expansion

The Fugitive Slave Law

Change the 36-30 line??????

Explanation:

Answer: I believe the correct answer is A.

Answer:

Metals

Explanation:

Usually, electrical conductors have loosely bound electrons. Materials that conduct heat are thermal conductors. Metals typically conduct both heat and electricity.

Answer:

4.55 seconds

Explanation:

Speed=distance / Time

So Time = Distance /speed

=1550/340

In hot lava, the dipoles change orientation rapidly. As the rock cools, the magnetic dipoles align with Earth’s magnetic field.

A dipole is a separation of positive and negative electrical charges within a material. In solid rocks, the dipoles form as a result of the arrangement of positively charged ions, such as cations, and negatively charged ions, such as anions, within the crystal lattice structure.

As lava cools and solidifies into solid rock, a change in the distribution of electrical charge can be observed in the resulting rock. This change is due to the movement and rearrangement of ions in the rock as it cools, leading to the formation of dipoles.

As lava cools, the movement and rearrangement of ions within the liquid can result in a change in the distribution of electrical charge, leading to the formation of dipoles.

In summary, as lava cools and solidifies into solid rock, a change in the distribution of electrical charge can be observed in the form of the formation of dipoles due to the rearrangement of ions in the rock.

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The frequent earthquakes in certain locations support the theory of plate tectonics.

Plate tectonics is the scientific theory that explains the movement of the Earth's lithosphere. Earthquakes are caused by the movement of tectonic plates, and the locations of frequent earthquakes help to support the theory of plate tectonics.

For example, areas such as the Ring of Fire, a region around the Pacific Ocean where a large number of earthquakes and volcanic eruptions occur, are located at the boundaries of several tectonic plates.

These boundaries are where the plates interact with one another, causing earthquakes, volcanic eruptions, and other geological events.

In addition to the Ring of Fire, other areas that experience frequent earthquakes are also located at plate boundaries.

For example, the San Andreas Fault in California marks the boundary between the Pacific Plate and the North American Plate, and earthquakes in this region are the result of the plates moving past one another.

Similarly, the Himalayan Mountains were formed as the result of the collision between the Indian Plate and the Eurasian Plate. The action of the plates pushing against one another causes frequent earthquakes in the region.

Overall, the locations of frequent earthquakes help to support the theory of plate tectonics by providing evidence of the movement and interaction of tectonic plates. Scientists use this evidence to better understand the Earth's geology and to make predictions about future earthquakes and other geological events.

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The factor that can have a significant influence on a planet’s surface temperature is its atmosphere.

The atmosphere plays a fundamental role in the Earth planet's temperature because it allows the entry and out of certain types of radiation that may increase the temperature.

The role of the atmosphere in the Earth's temperature is well documented because our temperature is thick and it increases its homeostatic temperature balance.

In conclusion, the factor that alters a planet’s surface temperature is its atmosphere.

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Explanation:

The period of a simple harmonic oscillator is given by the formula:

T = 2π√(m/k),where:T is the period of oscillation,m is the mass of the oscillator, andk is the spring constantIn this case, we are considering a scenario where the amplitude of the oscillator is halved. The amplitude is related to the mass and spring constant through the equation:A = √(k/m),where A is the amplitude.Let's assume that the mass and spring constant remain constant throughout the process.Initially, when the amplitude is a, the period is denoted as T1. We have:T1 = 2π√(m/k).When the amplitude is halved to 0.5a, the new period is denoted as T2. We want to find T2.To find T2, we can equate the two amplitude expressions and solve for the new period:√(k/m) = 0.5√(k/m).Simplifying the equation, we get:1 = 0.25.Since this equation is not true, it means that the new period cannot be determined solely based on the halving of the amplitude. The period of a simple harmonic oscillator depends on both the mass and the spring constant, and changing only the amplitude does not provide enough information to determine the new period. the period of oscillation,m is the mass of the oscillator, andk is the spring constantIn this case, we are considering a scenario where the amplitude of the oscillator is halved. The amplitude is related to the mass and spring constant through the equation:A = √(k/m),where A is the amplitude.Let's assume that the mass and spring constant remain constant throughout the process.Initially, when the amplitude is a, the period is denoted as T1. We have:T1 = 2π√(m/k).When the amplitude is halved to 0.5a, the new period is denoted .



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Answer:

Periods are horizontal rows (across) the periodic table, while groups are vertical columns (down) the table. Atomic number increases as you move down a group or across a period. Beside above, what do columns mean in the periodic table? The periodic table also has a special name for its vertical columns.

Explanation:

Answer:

C

Explanation:

Nitrogen and Oxygen donates electron to each other

Nitrogen and oxygen has the greatest chance of forming a covalent bond. Option C is correct.

Covalent bonds are chemical bonds that keep atoms of different elements together while sharing electrons.

Compounds can be polar covalent or nonpolar covalent, depending on the electronegativity variations between components.

The nitrogen family, Group 15, can react with oxygen in a variety of ways. Nonmetallic elements include nitrogen and phosphorus and oxygen.

Ionic bonds often occur between a metal and a nonmetal. Covalent bonds are most commonly formed between two nonmetals.

Nitrogen and oxygen has the greatest chance of forming a covalent bond from given a pair of atoms.

Hence,option C is correct.a given

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Answer:

Consider a satellite with mass Msat orbiting a central body with a mass of mass MCentral. The central body could be a planet, the sun or some other large mass capable of causing sufficient acceleration on a less massive nearby object. If the satellite moves in circular motion, then the net centripetal force acting upon this orbiting satellite is given by the relationship

Fnet = ( Msat • v2 ) / R

Explanation:

The acceleration of the satellite released from a spacecraft orbiting a planet at an altitude of 120 km and the planet has a mass of 5.2 x 10^23 kg and a radius of 2800 km is 4.426 *  \(10^6\)  \(m/s^2\).

The term "acceleration" refers to the rate and direction at which velocity varies over time. Acceleration is the change in direction or speed of an object or points moving ahead. The frequent change in direction causes motion on a circle to rise even when the speed remains constant.

For all other motions, these effects increase the acceleration. A vector quantity, acceleration, is something that has both a magnitude and a direction. Velocity is a vector quantity as well.

Given:

The altitude of the spacecraft, h = 120 km,

The mass of the planet, m = \(5.2 * 10^{23}\) kg,

The radius of the planet, r = 2800 km.

Calculate the acceleration by the formula given below,

A = \(G* m /r^2\)

Here, A is the acceleration, G is the gravitational constant,

Substitute the values,

A = 6.674 * \(10^{-11}\) *5.2 * \(10^{23}\) / \(2800^2\)

A = 4.426 *  \(10^6\)  \(m/s^2\)

Therefore, the acceleration of the satellite is 4.426 *  \(10^6\)  \(m/s^2\)

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Part A :The position of the particle in vector form is given by\(r⃗ (t)=R[cos(ωt)i^+sin(ωt)j^]\)where R is the radius of the circle and ω is the angular velocity.The velocity of the particle is given by taking the derivative of the position vector with respect to time.

Taking derivative with respect to time on both side we get \(v⃗ (t)=d/dt R[cos(ωt)i^+sin(ωt)j^]= R[-in(ωt)ωi^+cos(ωt)ωj^]=ωR[-sin(ωt)i^+cos(ωt)j^]v⃗ (t)=ωR[-sin(ωt)i^+cos(ωt)j^]\)Thus the velocity of the mass at a time t is given by \(v⃗ (t)=ωR[-sin(ωt)i^+cos(ωt)j^]\).

Part B :

We have to find the velocity at time -t. The velocity of the particle is given by taking the derivative of the position vector with respect to time. Thus the velocity of the mass at a time -t is given by \(v⃗ (-t) = ωR[sin(ωt)i^ - cos(ωt)j^]\)

\(v⃗ (-t) = ωR[sin(ωt)i^ - cos(ωt)j^]\)Part C :

The average acceleration of the particle can be computed using the formulaa = \(Δv/Δt\)The velocity at time t is given by\(v⃗ (t) = ωR[-sin(ωt)i^+cos(ωt)j^]\)

The velocity at time -t is given by \(v⃗ (-t) = ωR[sin(ωt)i^ - cos(ωt)j^]\)

\(v⃗ (-t) = ωR[sin(ωt)i^ - cos(ωt)j^]\)The change in velocity over the interval from -t to t is therefore

\(Δv = v(t) - v(-t) = 2ωR[sin(ωt)i^ + cos(ωt)j^]\)

The time interval over which this change occurs is\(Δt = 2t\)Thus the average acceleration of the particle is given by a = \(Δv/Δt = ω^2R[sin(ωt)i^ + cos(ωt)j^]/t\)

\(a = Δv/Δt = ω^2R[sin(ωt)i^ + cos(ωt)j^]/t\)

The acceleration can be expressed in terms of R, ω, t, and the unit vectors \(i^ and j^\) as \(a = ω^2R[sin(ωt)i^ + cos(ωt)j^]/t\).

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The given function needs to be operated on by the momentum operator (~p) and the angular momentum operator (l:op) to verify if it is an eigenfunction of both operators with the appropriate eigenvalues.

When a function is an eigenfunction of an operator, it means that applying the operator to the function results in the same function multiplied by a constant (the eigenvalue).

By following the steps above and verifying that the momentum and angular momentum operators result in the eigenfunction multiplied by their respective eigenvalues, you can confirm that the function is an eigenfunction of both operators.

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Answer:

2 and one-third, negative 4 and three-fourths

Step-by-step explanation:

the solution is the point at which the system of equations are equal to each other, meaning where they intersect

Answer:

A contact force is the push/pull that changes the velocity of a mass by physically touching it.

Example: muscular force, friction, or air resistance.

A non-contact force does the same without touching it.

Example: electrostatic force, gravity, or magnetism.

Answer:

960J

Explanation:

Given parameters:

Force  = 120N

Distance = 8m

Unknown:

Work required  = ?

Solution:

The work done by a body is the force applied to move a body in a specific direction.

 Work done  = Force x distance

Insert the parameters and solve;

  Work done  = 120  x  8  = 960J

The One strategy implemented to address the drug epidemic in Philadelphia is the creation of Comprehensive User Engagement Sites (CUES). These sites aim to tackle the widespread issue of drug addiction and related energy health concerns.

The CUES are safe spaces where individuals battling addiction can energy access various harm reduction services, such as clean syringes, medical support, and overdose prevention. These sites provide connections to addiction treatment programs and mental health services, helping people on their path to recovery. By offering safe and supervised spaces, CUES work to reduce public drug use, discarded syringes, and other related issues in the community. CUES also serve as educational hubs, raising awareness and providing information about the dangers of drug addiction and available resources for support. Lastly, these sites foster community engagement and collaboration, uniting various stakeholders in the fight against the drug epidemic. In summary, Comprehensive User Engagement Sites play a significant role in addressing the drug epidemic in Philadelphia. They provide harm reduction services, treatment programs, and community support, all while promoting a safer and healthier environment for the city's residents.

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A. The statement that is supported by the graph is the bicycle has speed but not velocity.

The velocity of an object is defined as the rate of change of displacement with time.

The speed of an object is the rate of change of distance with time.

Velocity of the bicycle is calculated as follows;

V = (x₂ - x₁) / (t₂ - t₁)

V = (3 - 3)/(5 - 0)

V = 0/5 = 0

Displacement of the bicycle, Δx = 0

Velocity = 0

Speed = total distance/total time

Speed = (3 + 3)/5 = 6/5 = 1.2 m/s

Thus, the statement that is supported by the graph is the bicycle has speed but not velocity.

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Answer:

The formula is CH+H2 it’s stable beacuse the to ions h and c make it stable element compound is ready and compactable

Explanation:

Answer:

the other person answered it correct

Explanation:

Answer:

Its B

Explanation:

a p e x

Answer:

C

Explanation:

During respiration, oxygen diffuses into the lung (carbon dioxide diffuses out), gets into the blood, and is transported around the body. The hemoglobin of the blood distributes the oxygen to the various cells and carbon dioxide from these cells diffuses into the blood. The blood travels back to the lung where the carbon dioxide is exchanged for oxygen once again. The carbon dioxide is eventually exhaled out of the nose.

The correct option is C.