a block of mass 3 kg slides along a horizontal surface that has negligible friction except for one section, as shown above. the block arrives at the rough section with a speed of 5 m/s and leaves it 0.5 s later with a speed of 3 m/s.questionwhat is the magnitude of the average frictional force exerted on the block by the rough section of the surface?

Answer: No, constant speed does not mean constant velocity.

A classic often used example would be to consider a car driving in circles. If the speedometer reads say 20 mph the entire time, then the speed of the car is held constant (ie the same). But the velocity is changing because velocity measures direction along with speed. The car is changing direction as it moves in a circle.

Answer:

"we both attract each other with the same force but we know that attraction between two bodies depends upon their mass, greater the mass of two bodies is the force of attraction between them"(got this off the internet).

The original lengths of both wires are equal, the thicker wire will stretch less as a result since Young's Modulus predicts that its original length will change less.

Young's modulus = stress/strain

We can assume that the thicker wire must have less strain if it suffers less stress than the thinner wire because strain is defined as the percentage change in length.

Therefore we can said that, For the Young's modulus to remain constant, which it does, it must also drop correspondingly as strain rises. The thicker wire will stretch less as a result since its original length will change less because both wires started off the same length.

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Answer:

Answers are below hopefully they're correct and what u need

Explanation:

1. Step 1: Given

The distance is 600 km, since 100(speed) x 6 (time) = 600

2. Step 2: Formula

s = d/t

d = t x s

t = d/s

3. Step 3: Substitue

s = 600/6

d = 100 x 6

t = 600/100

4. Step 4: Solve

600/6 = 100

100 x 6 = 600

600/100 = 6

Step 5: Answer

Therefore, the distance is 600km, the speed or rate is 100 km/hr, and the time is 6hrs.

NUMBER 2

1. Step 1: Given

Distance = 200 m

Rate or speed = 8m/s

Time = ?

2. Step 2: Formula

s = d/t

d = t x s

t = d/s

3. Step 3: Substitue

t = 200/8

s = 200/25

d = 25 x 8

4. Step 4: Solve

200/8 = 25

25 x 8 = 200

200/25 = 8

5. Step 5: Answer

Therefore, the time is 25sec, distance is 200m, and speed or rate is 8m/s

Answer:

vivi I is here and I will come up was wondering what do you think about this I don't know

Position one on the ignition switch allows you to use accessories with the engine offThe above statement is True.

Position one on the ignition switch, sometimes labeled as "ACC" or "Accessory," allows you to use certain electrical accessories in your vehicle without turning on the engine. This position provides power to the radio, power windows, and other electrical systems that don't require the engine to be running. It is commonly used when you want to listen to the radio or charge your phone without draining the car's battery or running the engine unnecessarily.

However, it's important to note that using accessories while the engine is off will still drain the car's battery over time, so it's generally recommended to limit accessory use when the engine is not running.

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The answer is D. A more reactive metal replaces a less reactive metal in a chemical reaction.

147,000 km is the distance from saturn inside which a moon would be tornapart by tidal forces.

In our solar system, Neptune is the planet that is most distant from the sun, but there are other minor planets that are also quite far away, including Pluto.

In reality, during 20 years out of its 249-year orbit, Pluto is further from the sun than Neptune is because its orbit is a far more elongated elliptical than those of the other planets.

Pluto has officially been dubbed a "dwarf planet" by the IAU since it has no longer "cleared its neighbouring area of various items." This means that, unlike the other planets, Pluto still has a large number of asteroids and other space rocks in its orbit rather than having absorbed them over time.

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Answer: they are compression waves

Explanation:

The unique property of light waves is that they do not require a medium for propagation.

Generally; waves are classified into electromagnetic waves and mechanical waves. Mechanical waves require a medium of propagation while electromagnetic waves do not require a medium for propagation.

Also, waves are classified into transverse waves and longitudinal waves. In transverse waves, the disturbance is perpendicular to the wave front while in longitudinal or compressional waves, the disturbance is parallel to the wave front.

Light is both an electromagnetic wave and a transverse wave. This means that it requires no material medium for propagation. This is the unique property of light waves.

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Answer:

The Earth orbits the sun once every 365 days and rotates about its axis once every 24 hours.

Explanation:

Day and night are due to the Earth rotating on its axis, not its orbiting around the sun. The term 'one day' is determined by the time the Earth takes to rotate once on its axis and includes both day time and night time.

C. They are probably the same temperature. it is likely that both the red book and the blue book are at the same temperature.

The color of an object does not inherently determine its temperature. The perceived color of an object is based on the wavelengths of light it reflects or absorbs. While different colors may have different abilities to reflect or absorb light, this does not necessarily indicate differences in temperature. Without additional information about the books or their exposure to external heat sources, it is reasonable to assume that both books sitting on the table would be at the same ambient temperature. In the absence of any specific heating or cooling mechanisms acting on the books, they would equilibrate with the surrounding environment and reach the same temperature over time.

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Answer:

Joule

Explanation:

As any unit of energy (kinetic, potential, etc.), the gravitational potential energy has SI units of Joule. This s the work done by a force of 1 Newton to displace an object 1 meter in the direction of application of the force.

Answer:

THY ANSWER IS G..

Can you please give me brainliest??

Explanation:

So here, we use the equation:

W = ΔKE + ΔPE

Recall that: KE = 0.5mv^2, and PE = qdΔV/D

ΔKE = 0.5m(v2)^2 - 0.5m(v1)^2, where v2 and v1 are Initial and final velocity respectively.

ΔPE = PE2 - PE1

PE2 = 0, since all energy is converted to other forms, mainly kinetic energy.

PE1 = q(d1)ΔV/D

Here, W = 0.

0 = 0.5m(v2)^2 - 0.5m(v1)^2 + 0 - q(d1)ΔV/D

Simplifying a bit, and knowing that d1 = D,

0 = 0.5m((v2)^2 - (v1)^2) - qΔV

Moving qΔV to the other side,

qΔV = 0.5m((v2)^2 - (v1)^2)

Dividing by q and isolating ΔV,

ΔV = 0.5m * ((v2)^2 - (v1)^2) / q

Now, we have ΔV, which is the electric potential difference, in terms of all the variables we know.

m = 9.1 * 10^-31

v2 = 1 * 10^6

v1 = 5 * 10^6

q = 1.602 * 10^-19 (this is a well known constant)

ΔV = 0.5*9.1*10^-31 * ((5*10^6)^2 - (1*10^6)^2) / 1.602*10^-19

Solving and simplifying all of this, we get that

ΔV = 68.25 V

As the temperature of a solvent increases, the solubility of a gas in that solvent generally decreases.

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The angle the plane of the loop must make with the field in order for the torque to be half its maximum value is 90°.

Torque is a rotational force that causes an object to rotate or turn about an axis. It is a form of force that is generated by a moment arm, which is the distance between the point at which the force is applied and the point at which it acts upon the object.

The torque on a circular loop is given by the equation:
T = μIBAsin(α),
Where μ is the permeability of free space, I is the current in the loop, B is the magnetic field, and α is the angle between the normal to the loop plane and the magnetic field.

In this problem, we want to find the angle α that maximizes the torque. To do this, we must set the torque equal to half its maximum value and solve for α.

T = 0.5μIBAmax
Substituting in the given values, we get:
0.5(4π x 10-7)(2.6 A)(0.95 T) = 0.5μIBAmax
α = sin-1(1) = 90°.

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The type of energy created by the rock rolling off a cliff and is now plummeting towards the ground is kinetic energy.

Kinetic energy is the energy possessed by an object because of its motion.

Kinetic energy is one of the two types of mechanical energy, with the other being potential energy.

Kinetic energy is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes.

According to this question, a rock has rolled off a cliff and is now plummeting towards the ground. The energy possesed by this rock is kinetic energy because it is in motion.

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An example would be if a student was dragging something across the floor that weighed 25 kg. The object would weigh 250 N if gravity were 10 m/s², according to this assumption.

It can be described as the force that causes a body to pull another body toward its center due to their mutual gravitational pull.

A student is dragging a 25 kilogram object across the floor as specified in the problem. estimating a gravity of 10 m/s².

The thing weighs 25 x 10 pounds.

The weight of the object = 250 N

Consequently, the object would have 250 N in weight.

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Explanation:

\(b = m \div v \\ 80 \div 30 \times 10 { -}^{2} \)

If a person's far-point distance with their contacts is 8.5 m, what is their uncorrected far-point distance?The far point of the human eye is the farthest point to which it can focus without straining. For a normal eye, this distance is usually infinity.

When the image formed on the retina is not clear, the distance from the eye to the farthest point to which the eye can focus is called the far-point distance. The ability of an eye to focus on distant objects is its capacity.

If the person's far-point distance with her contacts is 8.5 meters, her uncorrected for point distance can be calculated by using the following formula: Diopter = 100 cm / focal length in meters Using the above formula we have:Focal length = 100 cm / Diopter Focal length = 100 cm / 8.5 meters = 11.76 cm

Uncorrected for point distance = 1 / (focal length) Uncorrected for point distance = 1 / 0.1176 metersUncorrected for point distance = 8.49 meters

Therefore, the uncorrected for point distance of the person's eye is 8.49 meters.

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If the valve is pushed open and the coffee begins to flow out, the level of coffee in the standpipe will go down.

When the valve is pushed open and the coffee begins to flow out, the gravitational force causes the coffee to move downward. As the coffee flows out of the standpipe, it reduces the amount of coffee present in the standpipe.

The level of coffee in the standpipe is determined by the equilibrium between the incoming flow of coffee and the outgoing flow through the valve. When the valve is opened, the outgoing flow increases, exceeding the incoming flow. This causes the level of coffee in the standpipe to decrease over time.

In other words, as the coffee flows out, the volume of coffee in the standpipe decreases, leading to a decrease in the level of coffee. Therefore, the level of coffee in the standpipe will go down when the valve is pushed open and the coffee flows out.

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The correct answer is e. None of the above alternatives gives a true statement. None of the statements in options a, b, c, and d are true when it comes to a modulus M over a ring R having a finite basis.

When a modulus M can be formed entirely from a finite set of elements, the modulus M is said to be finitely generated. M's finite basis does not, however, automatically imply that M is finitely generated. A basis is a set of linearly independent elements, and it might not be enough to produce all of the components of the modulus.

According to the assertion in option b, M must include nonzero items of nonzero order if it has a finite basis. This is untrue, though. The smallest positive number k, such that the element raised to the power of k equals the identity element, is referred to as the order of an element.

According to option c, every non-null element in a modulus with a finite basis has a null. Nevertheless, this claim is likewise untrue. It is possible for a modulus with a finite basis to have non-null elements without a null element.

According to option d, a ring R is a body, or a field, and only then can a modulus have a finite basis. However, this assertion is also untrue. Even though the ring R is not a field, a modulus can nonetheless have a finite basis. None of the given alternatives provides a true statement about a modulus M over a ring R having a finite basis.

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When high voltages are present, a glow may be seen around sharp points, known as corona discharge.

This glow is caused by the ionization of the air molecules near the sharp point due to the electric field strength. The ionized air molecules emit light, creating a visible glow. The intensity and color of the glow depend on the voltage level and the gas composition of the surrounding environment.

Corona discharge is a phenomenon that occurs when high voltages are applied to a conductor, especially in the presence of a sharp point or a high electric field. It results in the ionization and excitation of the surrounding air molecules, creating a glowing or visible aura of light around the conductor. The ionized air can also produce a hissing or crackling sound. Corona discharge is often observed in high-voltage power lines, antennas, and other high-voltage equipment. It is important to note that corona discharge can cause power loss and interfere with the proper functioning of electrical systems, so efforts are made to minimize its occurrence in high-voltage applications.

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Answer:

8400 J

Explanation:

That is the picture of the explanation

The stroking method of magnetization is a technique used to magnetize ferromagnetic materials. It is based on the principles of domain theory, which helps us understand the behavior of magnetic materials at the atomic and microscopic level.

In domain theory, a ferromagnetic material is composed of many tiny regions called magnetic domains. Each domain consists of a large number of aligned atomic magnetic moments, creating a net magnetic field within the domain.
However, the magnetic moments in different domains can be randomly oriented, resulting in a lack of overall magnetization in the material.

The stroking method takes advantage of the fact that magnetic domains can be influenced and aligned by an external magnetic field. When a ferromagnetic material is subjected to an external magnetic field, the field causes the magnetic moments in the domains to align in the direction of the applied field. As a result, the domains merge and grow in size, leading to an overall magnetization of the material.

To apply the stroking method, a non-magnetized ferromagnetic material, such as a piece of iron, is taken and a strong permanent magnet is brought close to it.
The magnet is then repeatedly stroked along the length of the material in the same direction. The stroking motion ensures that the external magnetic field from the permanent magnet is consistently applied to the material.

As the magnet is stroked, the aligned magnetic domains within the material start to merge and grow. This process continues with each stroke, gradually increasing the overall magnetization of the material. Eventually, after several strokes, the material becomes fully magnetized, with the majority of the magnetic domains aligned in the direction of the stroking.

The stroking method is effective because the repeated application of the external magnetic field helps overcome the resistance of domain boundaries within the material.
These boundaries are regions where magnetic moments change orientation between adjacent domains, and they can hinder the alignment process.
By stroking the material, the external field continuously acts on the domains, encouraging them to overcome these barriers and align more uniformly.

It's important to note that the stroking method is a relatively simple and basic technique for magnetizing materials. In practical applications, more sophisticated methods, such as using electromagnets or specialized machinery, are often employed to achieve precise and controlled magnetization. However, the underlying principle of domain alignment remains a fundamental concept in magnetism.

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Answer:

The average atomic mass (sometimes called atomic weight) of an element is the weighted average mass of the atoms in a naturally occurring sample of the element. Average masses are generally expressed in unified atomic mass units (u), where 1 u is equal to exactly one-twelfth the mass of a neutral atom of carbon-12.(I hope this helps!)

A point 017 into 15000 is 55 volts. that we may write. Voltage is therefore applied as a result. It has a 250 volt voltage.

Voltage is the pressure from the power source of an electrical circuit that drives charged electrons (current) across a conducting loop, allowing them to perform tasks like lighting a lamp. Briefly stated, voltage equals pressure and is measured in volts.

Electric potential, voltage, & electromotive force are all denoted by the volt (symbol: V). The volt was created by the Italian scientist Alessandro Marsala (1745–1827), who may have created the first electrochemical battery with the voltaic pile.

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The possible stages of a star occur in a specific order. First, a protostar is formed from a dense cloud of gas and dust. Then, as the protostar contracts and heats up, it becomes a main-sequence star and begins to generate energy through nuclear fusion. This stage can last for billions of years until the hydrogen fuel in the star's core is depleted.

At this point, the star begins to expand and becomes a red giant, which is characterized by its increased size and cooler temperature. As the red giant burns off its outer layers, it sheds material and creates a planetary nebula. This stage can last for thousands of years until the star's core collapses and becomes a white dwarf.

The white dwarf is a small and hot remnant of the star's core that no longer generates energy. It will gradually cool down over billions of years until it becomes a cold black dwarf. In summary, the order in which the possible stages of a star occur is protostar, main-sequence star, red giant, planetary nebula, white dwarf, and finally a black dwarf.

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Answer:

starch into simple sugars

have a great day

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Answer:

The answer would be no

Explanation:

because the voltages are so high, we can assume that 5 appliances divided up between the voltages would not be safe to use together and would ultimately cause the circuits to overload

The combination of high elevation and high latitude generally results in the coldest temperatures.

option D.

Elevation refers to the height of a location above sea level, and latitude refers to the distance of a location from the equator. In general, higher elevations are colder due to the decrease in atmospheric pressure, which leads to lower temperatures. Similarly, higher latitudes are colder because they receive less direct sunlight and are farther away from the equator.

When both high elevation and high latitude are combined, the temperature tends to be the coldest. This is because high elevation areas are often located at higher latitudes, such as in mountainous regions near the poles, where the combination of lower temperatures due to elevation and lower temperatures due to latitude results in even colder temperatures.

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