What makes a charged object attract an uncharged object.

Answer:

Im not sure if this is correct but it might be 15.3

Explanation:

8.5kg multiplied by 1.8 m/s is 15.3

Answer:

KE = 13.77 J

Explanation:

KE=1/2 mv^2

The meteorites' kinetic energy stores are transferred to the surroundings as heat, sound and light energy.

A meteorite possesses kinetic and potential energy before it enters the Earth's atmosphere. Frictional heating happens when it enters and descends towards the Earth's surface because of collisions with atmospheric molecules, which slows its velocity. As a result, the kinetic energy drops and is changed to heat energy. As potential energy is transformed into kinetic energy, it constantly decreases. Ablation also results in mass loss.

Friction starts to work on the meteorite as it enters the earth's atmosphere. A meteorite will have kinetic energy when it enters the earth's atmosphere. The meteorite catches fire as a result of friction. At this time, the meteorite's kinetic energy will be transformed into heat, sound, and light energy.

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The acceleration is still -9.81 m/s2, and the instantaneous velocity of the shuttlecock when it hits the ground is \(V_{int}\) = \(\sqrt{U^{2} + 19.6H }\)

Acceleration is determined as the rate of change of velocity of an object with respect to time. Acceleration is represented by the SI unit is meter per second squared (m/\(s^{2}\)). Acceleration is denoted by "a".

Instantaneous velocity is the rate of change of position for a time interval which is almost zero (very small). The magnitude of the instantaneous velocity is instantaneous speed. It is measured by using SI unit m/s.

Mathematically, the equation for acceleration is:

a =  \(v\frac{dv}{dt}\)

ah = \(v^{2}\) - \(u^{2}\)

Where the acceleration is still -9.81 m/s2

Hence, \(v^{2}\) - \(u^{2}\) = 2 (-9.81) * -H

Therefore, \(v_{int}\) = \(\sqrt{U^{2} + 19.6H }\)

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The term for the principal that an object in motion remains in motion until it is met by an outside force is called inertia

Newton's first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force .This principal is named as inertia .

Every matter have inertia , a property to remain in that very position until unless it is been forced on them to change their position .

Inertia is a property of matter that causes it to resist changes in velocity (speed and/or direction). According to Newton's first law of motion, an object with a given velocity maintains that velocity unless acted on by an external force. Inertia is the property of matter that makes this law hold true.

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The wavelength of this light in nanometers (nm) absorbed by the substance is (5 / 6) × 10² nm and the energy of a photon of light emitted by the substance is 2.84 × 10⁻¹⁹ J If the light absorbed by a certain substance has a frequency of 3.6 x 1014 Hz.

1. We have been given the frequency of light absorbed by a substance, f = 3.6 × 10¹⁴ Hz.

We know that the speed of light, c = 3 × 10⁸ m/s.

To calculate the wavelength, we use the formula:

c = fλ

λ = c / f

Wavelength, λ = c / fλ = (3 × 10⁸ m/s) / (3.6 × 10¹⁴ Hz)

λ = (300000000 m/s) / (360000000000000 Hz)

λ = (5 / 6) × 10⁻⁷ m

Converting meters to nanometers,1 nm = 10⁻⁹ m

λ = [(5 / 6) × 10⁻⁷ m] × [(10⁹ nm) / (1 m)]

λ = (5 / 6) × 10² nm

Therefore, the wavelength of the light absorbed by the substance is (5 / 6) × 10² nm.

2. We have been given the wavelength of light emitted by a substance, λ = 700 nm.

We know that the speed of light, c = 3 × 10⁸ m/s

Planck's constant, h = 6.626 × 10⁻³⁴ Js.

To calculate the energy of a photon, we use the formula:

E = hc / λ

E = (6.626 × 10⁻³⁴ Js) × (3 × 10⁸ m/s) / (700 × 10⁻⁹ m)

E = 2.84 × 10⁻¹⁹ J

Therefore, the energy of a photon of light emitted by the substance is 2.84 × 10⁻¹⁹ J.

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The speed of the ball released is 7.75 m/s.

The speed of the can be determined from the principle of conservation of energy as shown  below;

supplied energy of the dispenser = kinetic energy of the ball

Power x time = kinetic energy of the ball

10 x 15 = ¹/₂ x 5 x v²

150 = 2.5v²

v² = 150/2.5

v² = 60

v = √60

v = 7.75 m/s

Thus, the speed of the ball released is 7.75 m/s.

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Answer:

With all of that information, he's telling us the train's VELOCITY.

Explanation:

Velocity is a vector quantity made of two parts: speed and direction.

One of the options that are the most appropriate choice of Gaussian surface to use in this problem is a finite closed cylinder whose axis coincides with the axis of the rod and whose cross section has radius r.

This is because the charged cylinder which is of infinite length as mentioned and hence there won't be any electric flux coming out of the top and bottom flat surfaces.

Now, to find out the magnitude of the electric field, we shall have to apply Gauss's law,

\(\int\limits^ _ {} \,\)Eda=  Q enclosed/E

Gaussian surfaces would be the simplest to use to determine the electric field intensity near a long, straight, charged wire, is a cylinder whose axis coincides with the wire.

The Gaussian surface is primarily known as a closed surface in a  three-dimensional space (3-D) such that the flux of a vector field is calculated.

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The room temperature is approximately 0.95°C.

Rt = Ro[1 + A(Tt - To) + B(Tt - To)2]

75,000 = Ro[1 + A(100 - To) + B(100 - To)2]

64,992 = Ro[1 + A(25 - To) + B(25 - To)2]

Dividing the two equations, we can eliminate the unknown constant Ro and obtain an expression for the ratio of A/B:

75,000 / 64,992 = [1 + A(100 - To) + B(100 - To)2] / [1 + A(25 - To) + B(25 - To)2]

Simplifying and rearranging, we get:

A/B = [1 + (100 - To)(64,992/75,000) - (25 - To)] / [(100 - To)2 - (25 - To)2(64,992/75,000)]

Using the given resistance values, we can evaluate the ratio of A/B to be approximately 0.00386.

63,000 = Ro[1 + 0.00386(0 - To) + B(0 - To)2]

Simplifying and solving for To, we get:

To ≈ 0.95°C

Resistance is a property of materials that opposes the flow of electrical current. It is a measure of the degree to which an object resists the passage of electrons through it. Resistance is caused by collisions between the electrons and the atoms that make up the material. These collisions cause the electrons to lose energy and slow down, reducing the flow of current.

The unit of resistance is the ohm (Ω), and it is defined as the ratio of voltage to current. Materials with high resistance have a low conductivity, while materials with low resistance have a high conductivity. This property is important in designing electronic circuits, where different components need to have different levels of resistance to perform specific functions. Resistors, for example, are components that are designed specifically to provide a certain level of resistance to a circuit.

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Answer:

t = 11.1 hours

Explanation:

The question says that, "A mobile advances at 20 m / s and travels a distance of 800 km. Determine the time in hours you use".

Given that,

Speed of a mobile, v = 20 m/s = 72 km/h

Distance, d = 800 km

We know that,

Speed = distance/time

So,

\(t=\dfrac{d}{v}\\\\t=\dfrac{800}{72}\\\\t=11.1\ h\)

So, it will take 11.1 hours.

The correct answers are up, down, into the screen, and out of the screen.

When a charge is moving at an angle of 90 degrees to a magnetic field, it experiences no magnetic force. When a charge is moving parallel or anti-parallel to a magnetic field, it does not experience magnetic force.

Check all that apply in the following list: UpDownLeftRightInto the screenOut of the screen

A magnetic field is a field created by an electrical charge in motion, such as an electron or a current through a wire. A magnetic field's direction is determined by the direction of the current, with north and south poles corresponding to the direction of the current.

When a charged particle travels through a magnetic field, it experiences a magnetic force.The charge moves and experiences no magnetic force when it is perpendicular to the magnetic field.

Therefore, the correct answers are up, down, into the screen, and out of the screen.

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The heat transferred (qqq) can be expressed as qqq = δu - www, where δu represents the change in internal energy and www represents the work done.

In the context of energy conservation, the change in the total energy of a system is equal to the sum of the work done on the system and the heat transferred into or out of the system. This can be expressed mathematically as:

ΔE = qqq + www,

where ΔE represents the change in total energy, qqq represents the heat transferred, and www represents the work done.

If we isolate qqq in the equation, we have:

qqq = ΔE - www.

Since the question asks us to express qqq in terms of δu (change in internal energy) and www (work done), we can substitute ΔE with δu, as internal energy (u) is a component of the total energy:

qqq = δu - www.

This equation represents the heat transferred (qqq) in terms of the change in internal energy (δu) and the work done (www).

The heat transferred (qqq) can be expressed as qqq = δu - www, where δu represents the change in internal energy and www represents the work done.

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Answer:

Explanation:

The height of the hill side can be found by using the formula

\(h = \frac{p}{m} \\ \)

p is the potential energy

m is the mass

From the question we have

\(h = \frac{1568}{40} = \frac{196}{5} \\ \)

We have the final answer as

Hope this helps you

Answer: 4.0m

Explanation:

Answer:

draw the two atomic structures and then focus in on the electrons either gaining or losing and draw them with arrows and dots

Explanation:

To interpret the indications of the tools mentioned:

1. Thermometer: The thermometer is used to measure the temperature of the reaction. It can indicate if the reaction is exothermic (temperature increases) or endothermic (temperature decreases).

2. Phenol red: Phenol red is a pH indicator commonly used to detect the presence of acids and bases. It changes color depending on the pH of the solution. It can indicate if the reaction is acidic or basic.

3. Glowing splint: When a glowing splint is brought near the reaction, it can indicate the presence of oxygen if it reignites or continues to burn brightly. This can be a sign of a chemical reaction producing oxygen gas.

4. Burning splint: A burning splint can be used to test for the presence of flammable gases. If the reaction produces flammable gases, the burning splint may produce a flame or a popping sound.

It's important to note that the specific indications observed will depend on the nature of the reaction and the substances involved.

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Answer:

These two groups of planets are separated by the asteroid belt, a disk of small rocky bodies orbiting the sun between Mars and Jupiter.

Explanation:

Your welcome!

Answer:

6 m/s East

Explanation:

Momentum = Mass . Velocity

26100 = 4350. Velocity

Velocity = 6m/s East

If the average distance between galaxies is 0.27 of its current value, it means that galaxies were closer together in that era.

This also means that there would be more galaxies in a cube of the same size as compared to the present-day universe. To calculate the number of galaxies, we can use the inverse square law, which states that the number of galaxies in a given volume is proportional to the inverse square of the distance between them.
At a cosmological redshift of z=2.7, the distance between galaxies would be about 3.7 times smaller than it is now (since redshift is related to the expansion of the universe). Therefore, the number of galaxies in a cube of the same size would be about \((3.7)^2 = 13.69\) times greater than it is now.
   Since there is currently about one Milky Way-sized galaxy in a cube of that size, we would expect to find about 13.69 Milky Way-sized galaxies in a cube of the same size in that era.

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Savings account is where she can have access to her money anytime in case of an emergency.

This is a type of account run by a financial institution which yields interests on deposits made.

This type of account usually comes with features in which the money can be withdrawn via an ATM card or by visiting the bank to collect it. This therefore makes it the most appropriate choice for Analisa.

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Answer: The Hall effect is the movement of charge carriers through a conductor towards a magnetic attraction. The Hall effect causes a measurable voltage differential across the conductor such that one side is positively charged and the other negatively.

Explanation:

The magnitude of the motional emf in the rod is 0.1872 when an isolated conducting rod of length 8.00 cm is oriented parallel to the x-axis. The speed of rod in y-direction is 3.90m/s.

Given an isolated conducting rod of length (l) = 8.00 cm = 8x10-2m

it moves in the y-direction at (v) = 3.90 m/s

uniform magnetic field of magnitude (B)= 0.600T

Let the magnitude of the motional emf in the rod be E

We know that E = BxlxV

E = 0.600T x 3.90m/s x 8x10-2m = 18.72x10-2

Hence the magnitude of the motional emf in the rod is 0.1872

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Answer:

unforturnitly

Explanation:

step unstepable

A collision that is fully elastic is one where there is no kinetic energy lost during the contact. In an inelastic collision, a proportion of the energy is converted into another kind of energy during the contact.

In elastic collisions, kinetic energy and momentum are both conserved. Consider two similar trolleys that are moving in the same direction at the same pace. With no loss of speed, they collide and bounce off one another. Since no power has been lost, this collision is fully elastic.

photo of A description of completely elastic collision

When a system's maximal quantity of kinetic energy is equal to zero, a relatively inelastic collision takes place.

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A collision that is fully elastic is one where there is no kinetic energy lost during the contact. In an inelastic collision, a proportion of the energy is converted into another kind of energy during the contact.

In elastic collisions, kinetic energy and momentum are both conserved. Consider two similar trolleys that are moving in the same direction at the same pace. With no loss of speed, they collide and bounce off one another. Since no power has been lost, this collision is fully elastic.

photo of A description of completely elastic collision

When a system's maximal quantity of kinetic energy is equal to zero, a relatively inelastic collision takes place.

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Answer:

yes because if red light was natural then it should cause more damage because that how it is

Answer:

its yes because if red light was natural then it should cause more damage because that how it is

Answer:

200 N to the right

Explanation:

The magnitude of the force exerted by the chain is 36.1 N.

The magnitude of the force exerted by the chain must balance the force exerted by the ring and weight of the pot.

The magnitude of the force exerted by the chain is calculated by applying Pythagoras theorem;

\(F_3^2 = F_1^2 + F_2^2\\\\F_3 = \sqrt{F_1^2 + F_2^2} \\\\F_3 = \sqrt{20^2 + 30^2} \\\\F_3 = 36.1 \ N\)

Thus, the magnitude of the force exerted by the chain is 36.1 N.

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