what is the period of the kinetic or the potential energy change if the period of position change of an object attached to a spring is 4.8 ss ?

According to Faraday's law of electromagnetic induction, a changing magnetic field induces an electric field in a closed loop, which then drives a current in the loop.

In this scenario, as the magnet moves upward and away from the loop, the magnetic field through the loop decreases.

Therefore, the induced electric field drives a current in the loop in a direction such that it creates a magnetic field opposing the decrease in the original magnetic field.

Applying the right-hand rule for the direction of the induced current, we can see that the current in the loop would flow in a counterclockwise direction if viewed from above while the magnet is leaving it.

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Answer:

acceleration= force / mass

a= 1.48 m/sec^2

In an electromagnetic wave, the electric and magnetic fields are interconnected and propagate together. The relationship between the amplitudes of the electric field (E) and the magnetic field (B) in an electromagnetic wave is given by:

E/B = c,

where c is the speed of light in a vacuum.

Given that the amplitude of the electric field doubles to become 2E₁, we can determine the corresponding change in the magnetic field amplitude.

Let's assume the initial amplitude of the magnetic field is B₁.

Using the relationship E/B = c, we can write:

2E₁ / B₂ = c,

where B₂ represents the new amplitude of the magnetic field.

Rearranging the equation, we find:

B₂ = (2E₁) / c.

Since the speed of light in a vacuum (c) is a constant, we can conclude that doubling the amplitude of the electric field leads to doubling the amplitude of the magnetic field.

Therefore, the correct answer is option (b) - the amplitude of the magnetic field becomes two times larger.

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Answer:

Motion:

Motion is when an object is changing position with respect to its surrounding.

Example:

=> A cyclist riding a cycle (cyclist is in motion.)

=> Fan moving (fan is in motion.)

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Hey I'm working on this test right now, did you ever get the answers?

The charge on the plastic bead is (a) + 1.7 nC

To find the charge on the plastic bead, we can use Coulomb's Law, which describes the electric force between two charged objects. The formula for Coulomb's Law is:

F = k * |q1 * q2| / r^2

where F is the electric force, k is Coulomb's constant (8.99 x 10^9 Nm²/C²), q1 and q2 are the charges of the two objects, and r is the distance between them.

We are given that the glass bead is charged to 3.8 nC (q1), the electric force (F) is 7.0 × 10^(-4) N, and the distance (r) is 2.9 cm, which we should convert to meters: 0.029 m.

We are solving for the charge on the plastic bead (q2). Rearrange the formula for q2:

q2 = (F * r^2) / (k * q1)

Now, plug in the given values:

q2 = (7.0 × 10^(-4) N * (0.029 m)^2) / (8.99 × 10^9 Nm²/C² * 3.8 × 10^(-9) C)

q2 ≈ 1.7 × 10^(-9) C

Converting back to nanocoulombs, q2 ≈ +1.7 nC. Therefore, the charge on the plastic bead is:

(a) + 1.7 nC

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Given,

The work done on the spring, U=320 J

The spring constant, k=730 N/m

The work done on the spring is stored in it as the spring potential energy. And it is given by

On rearranging the above equation,

On substituting the known values in the above equation,

Thus the spring stretches for 0.94 m. Therefore the correct answer is option 4.

A high-voltage spark is delivered to the plugs via the primary winding. The principal magnetic field of the coil increases. Zero volts are reached by the secondary voltage.

The fundamental ideas are inductance and electromagnetism. Two sets of wire windings, or coils—get it—that make up an ignition coil can be found inside. An iron core is encircled by the two windings, referred to as a primary set and a secondary set. A magnetic field is created when the battery current enters the primary windings. The magnetic field collapses over the secondary windings when a switch—the distributor points opening or an electronic trigger—interrupts the flow of battery current.

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Answer:

Twice

Step-by-Step Explanation:

Time between 7:00 PM and 1:00 AM: 6 hours

Distance: 4818km

Since the distance is 4818km, and the time is 6 hours, you divide 4818 by 6.

803.0000015999 km/h.

The average speed is 803 km/h

Which considering the ideal case scenario if the plane starts at 0 reaches the speed of 803 and the end reduces its speed from 803 to 0. This means we have come across the value of 800 at least twice. Hence, the plane was travelling at a speed of 800 km/h at least 2 times.

Answer:

Electromagnets are special types of magnets that are made by passing current through coils of wire. To make an electromagnet, the minimum requirements are:

1. A nail (usually made of iron, steel or zinc)

2. Dry cell batteries

3. Wire (Usually copper wire)

Other things could be:

1. Electric tape to hold both ends of the wire properly at the battery terminals.

2. Scissors to cut the wire into desired length.

3. Iron fillings for testing purposes.

El trabajo de la fuerza aplicada es 1905 J

Los datos del problema son  

El trabajo se define por el producto escalar entre la fuerza y ​​el desplazamiento, las letras en negrita indican vectores

        W = F. D

Donde W es el trabajo, F la fuerza, d el desplazamiento y el punto representa el producto escalar,  

           W = F d cos θ

Esta expresión es un escalar y θ es el ángulo entre la fuerza y la distancia

Calculamos el trabajo

     W = 110 20 cos 30  

      W = 1905 J

Donde J es la unidad de trabajo

El trabajo de la fuerza que es un escalar es 1905 J

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The velocity of the electron passing between the plates in the Thomas experiment is approximately 6.1 x 10^6 m/s.

To find the velocity of the electron passing between the plates in the Thomas experiment, we can use the equation:
v = (2qV/B^2d)^0.5
where v is the velocity of the electron, q is the charge on the electron (-1.6 x 10^-19 C), V is the voltage across the plates (50 V), B is the magnetic field applied (10^-4 T), and d is the distance between the plates (3 cm or 0.03 m).
Plugging in the values, we get:
v = (2 x (-1.6 x 10^-19) x 50 / (10^-4)^2 x 0.03)^0.5
v = 6.1 x 10^6 m/s

Therefore, the velocity of the electron passing between the plates in the Thomas experiment is approximately 6.1 x 10^6 m/s.

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Answer:

Geology Notes

1 Veryovkina Cave 2212[1] 13.5 km (8.4 mi)[1] Abkhazia / Georgia 43°23′52″N 40°21′37″E.

The magnetic field at a distance r from the center of a long wire with radius a and uniform current per unit area j in the positive z direction can be found using Ampere's law and is equal to B = { μ0jr/2 (for r<a)

μ0ja²/2r (for r>a) }

For a point inside the wire (r<a), we can choose an imaginary Amperian loop in the shape of a circle with radius r centered on the wire.

The current passing through this loop is equal to the current density times the area of the loop, so I = jπr^2. By Ampere's law, the line integral of the magnetic field around this loop is equal to μ0 times the enclosed current, where μ0 is the permeability of free space.

Since the current is uniform, the magnetic field is also uniform and directed in the azimuthal direction. Therefore, the line integral reduces to B times the circumference of the loop, or 2πrB. Thus, we have:

2πrB = μ0 jπr²

B = μ0jr/2

For a point outside the wire (r>a), we can again choose an imaginary Amperian loop in the shape of a circle with radius r centered on the wire. However, in this case, the current passing through the loop is equal to the total current flowing in the wire, which is equal to the current density times the cross-sectional area of the wire, or I = jπa^2. Thus, we have:

2πrB = μ0 jπa²

B = μ0ja²/2r

Therefore, the magnetic field at a distance r from the center of a long wire with radius a and uniform current per unit area j in the positive z direction is given by:

B = { μ0jr/2 (for r<a)

μ0ja²/2r (for r>a) }

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A bicycle and rideer travel along a road. the true about the sentence is: a. the bicycle and the rider undergo translation. The rider moving because you have to push the pedals and make the bike moves too.

The magnitude of the magnetic field inside the solenoid is 3.4×10^(-4) T.

To find the answer, we need to know about the magnetic field inside the solenoid.

I= 0.3 A

Thus, we can conclude that the magnitude of the magnetic field inside the solenoid is 3.4×10^(-4) T.

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Explanation:

weight of the piano = mg

w = 99 x 10 =990 N

Answer:

1.6m/s²

Explanation:

It was difficult to type the answer here

During a race, a horse's speed increases from 65 m/s to 73 m/s during the last 5.0 seconds of that race, 1.60 m/s² was the rate of acceleration during this time.

The rate of change of velocity is defined as acceleration. Acceleration usually indicates that the speed is changing, but this is not always the case. When an object moves in a circular path at a constant speed, it is still accelerating because its velocity direction changes.

Acceleration occurs when the speed of an object increases or decreases, or when it changes direction. Acceleration, like velocity, has two types: average and instantaneous.

a = v - v₀ / t

Then, a = 73 × 65 / 5

a = 1.60 m/s²

Thus, 1.60 m/s² was the rate of acceleration during this time.

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Answer:

The heat energy required to raise the temperature from 20°C to 85°C is 1.46x10^4J

The heat of the surroundings is  - 4482 J.

A calorimeter is a device in which that is no exchange of heat between the device and the environment. In other words, there could only be exchange of heat when the a substance has been put inside the calorimeter.

We know that in a calorimeter;

Heat of the surrounding =  Heat of the system

That implies that they are of the same magnitude but of opposite direction hence the heat of the system is - 4482 J.

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Answer:

D hope this helps plz mark brainliest

Explanation:

Slow cooling of magma beneath the surface of Earth

Rocks with light and dark color and coarse texture can form in a variety of ways, depending on the specific type of rock. However, one common way that this type of rock can form is through a process called igneous rock formation.

Igneous rocks are formed when molten rock (magma) cools and solidifies. The type of igneous rock that forms depends on the composition of the magma and the rate at which it cools. When magma cools slowly beneath the Earth's surface, it can crystallize and form large, coarse-grained igneous rocks called plutonic or intrusive rocks.

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Answer:

focal length

Explanation:

This describes focal length of the beam

Answer:

A. Good conductor of heat

Explanation:

The group 10 elements are a group of chemical elements as part of VIII elements and they include nickel, platinum, palladium etc. These group of chemical elements are all d-block transition metals, highly ductile and lustrous and are mostly white to light grey in color.

The statement which most likely describes a Group 10 element is that they are good conductor of heat because they have some of the chemical and physical properties of metals.

We first determine the total force ni he horizontal axis, that is:

Now, we determine the acceleration:

So, the acceleration is approximately 2.935 m/s^2.

Answer:

Dog2 has most kinetic energy .

B:324j

Answer:

Explanation:

Momentum

If friction is neglected, at any given instant both objects will have the same c) Height.

Friction is the resistance to motion that results from two objects rubbing against one another. Two objects rubbing against one another causes friction. Motion is opposed by friction, which works against the motion.

When an object slides over another object, friction slows it down. As a result, energy is used. However, the energy does not fade away. Kinetic energy, also referred to as moving energy, is transformed into heat energy. We rub our hands together when it's cold because of this. Rub them together, and friction and heat will result.

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When you mix 100 pounds of soil with 100 pounds of KCl, the resulting soil would have a pH near 7.0.

This is because KCl is a neutral salt and does not affect the pH of the soil. The modest CEC of the soil means that it has a relatively low capacity to retain positively charged ions such as K+. Therefore, adding KCl would not significantly affect the pH of the soil. The resulting soil would have a similar pH to the original soil, but it may have a slightly higher pH due to the dilution effect of adding more material. However, the pH increase would be minimal and would not make the soil moderately alkaline (pH 7.5 to 8.5) or calcareous.

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