What is the resistance of a 47.1-m-long aluminum wire that has a diameter of 9.47 mm? The resistivity of aluminum is 2.83 × 10-8 Ω·m.
= _______________ Ω

Answer:

barometer

Explanation:

Answer:

barometer

Explanation:

Answer:

transmission

Explanation:

Answer:

"Why?"

Fluorine is the most electronegative element considering it contains 5 electrons in it's 2P shell. The optimal electron configuration of the 2P orbital contains 6 electrons. This being said, Fluorine is very close to ideal electron configuration, meaning the electrons are held very tightly to the nucleus. Hence, in summary the element Fluorine has the greatest electronegativity.

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Fluorine is the element listed in the problem that would have the greatest electronegativity, therefore the correct answer is option A.

The term "electronegativity" describes how attracted an atom is to the bonding electrons in molecules as opposed to other atoms.

As given in the problem, we have to find the element listed that would have the greatest electronegativity,

A. Fluorine

B. lithium

C. boron

D. carbon

In General, as we move from the left to right side of the periodic table the electronegativities of the elements increases.

In comparison to small electronegativity values, large electronegativity values show a stronger attraction for electrons.

Thus,  Fluorine is the element listed in the problem that would have the greatest electronegativity, therefore the correct answer is option A.

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The Planet on its axis often contributes to the deflection created by the Coriolis force.

Moving objects in a reference point that rotates relative to an inertial frame are affected by an imagined or inertial force known as the Coriolis force. the force acting left of a object . an object in a frame of reference rotating in a clockwise direction.

Rotation: Rotation, often known as spin, is the cyclical motion of an object about a fundamental axis.

A two-dimensional rotating object can only have one possible central axis.

Such things have an axis that may rotate either counterclockwise or clockwise.

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Answer:

4.04 s

Explanation:

From the question given above, the following data were obtained:

Height (h) = 80 m

Acceleration due to gravity (g) = 9.8 m/s²

Time (t) =?

The time taken for the rock to get to the ground can be obtained as shown below:

h = ½gt²

80 = ½ × 9.8 × t²

80 = 4.9 × t²

Divide both side by 4.9

t² = 80/4.9

Take the square root of both side

t = √(80/4.9)

t = 4.04 s

Thus, it will take 4.04 s for the rock to get to the ground.

You could pursue a career in oceanography, aircraft safety, energy conservation, air quality control, space exploration, or education. The most thorough and economical method for remotely monitoring these systems is via satellite.

Weather forecasting, remote sensing, geo-positioning, navigation, television, and telephony are a few of the services that satellites may offer for disaster risk management and emergency response.

For the purpose of taking pictures, atmospheric sounding, satellite communication, geo-positioning, and navigation, equipment onboard the satellites circling the Earth is created to cover a range of wavelengths in the electromagnetic spectrum.

Depending on the use or instrumentation, satellites orbit the Earth in a variety of ways: A satellite in a geostationary orbit revolves around the planet simultaneously with the rotation of the planet above the equator (0° latitude).

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This principle is based on the observation that in undisturbed sedimentary rock formations, the oldest layers are at the bottom and the youngest layers are at the top.

What is Fossils Fuels?

Fossil fuels are a group of non-renewable energy sources that are formed from the remains of dead plants and animals that lived millions of years ago. Fossil fuels include coal, oil, and natural gas, and are used to generate electricity, power transportation, and heat buildings.

Coal is formed from the remains of plants that lived in swampy environments millions of years ago. Over time, these plants were buried and subjected to high pressure and temperature, which converted them into coal. Coal is primarily used to generate electricity in power plants.

The law of superposition is a basic principle of geology that states that in a sequence of sedimentary rock layers, each layer is younger than the one beneath it and older than the one above it.

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Santiago’s teacher showed him a kind of cloth that changes color if it is placed out in the sun, but does not change color if it is placed under a desk lamp because the sun gives off a type of light that carries energy, and light from the desk lamp does not.

This is referred to as the luminous celestial body around which the earth and other planets revolve, from which they receive heat and light.

The light emitted by the sun contains energy which could be in the form of solar energy and is therefore the reason why light from the sun changes the color of the cloth while the light from the desk lamp does not.

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Answer:

(a) Parallel to the incedent ray

A wedge is like a ramp that can work while in motion.

As a tool for raising or lowering a load, an inclined plane, also referred to as a ramp, is a flat supporting surface that is tilted at an angle from the vertical direction with one end higher than the other. One of the six traditional simple machines that Renaissance scientists defined is the inclined plane.

Heavy loads are transported over vertical obstacles using inclined planes. Examples include a ramp used to load cargo into a truck, a pedestrian ascending a ramp, or an automobile or train ascending a grade.

Less force is needed to lift an object up an inclined plane than to lift it straight up, but the distance travelled is greater. Hence, a wedge is like a ramp that can work while in motion.

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Answer:

It's may help you to answer

One condition under which Hooke's law is invalid is when the spring is stretched beyond its elastic limit. Simple harmonic oscillation is a type of motion that occurs when a system is displaced from its equilibrium position and experiences a restoring force that is proportional to the displacement.

Hooke's law is a principle that states that the amount of deformation or stretching of a spring is proportional to the force applied to it. This law holds true only under certain conditions, and it can become invalid in certain circumstances.

One condition under which Hooke's law is invalid is when the spring is stretched beyond its elastic limit. The elastic limit is the point beyond which the spring will no longer return to its original shape and size when the applied force is removed. When a spring is stretched beyond its elastic limit, it can become permanently deformed and may not obey Hooke's law.

Another condition under which Hooke's law is invalid is when the spring experiences plastic deformation. Plastic deformation occurs when a spring is stretched beyond its yield point, which is the point at which it can no longer support the applied force without undergoing permanent deformation. When a spring undergoes plastic deformation, it will not obey Hooke's law and will not return to its original shape and size.

Simple harmonic oscillation is a type of motion that occurs when a system is displaced from its equilibrium position and experiences a restoring force that is proportional to the displacement. This type of motion is characterized by a periodic motion in which the system oscillates back and forth around its equilibrium position.

In a simple harmonic oscillator, the system's displacement is proportional to the force applied to it, and the system oscillates at a constant frequency. This type of motion is found in many systems, including pendulums, springs, and electrical circuits.

In summary, Hooke's law is only valid under certain conditions and can become invalid when a spring is stretched beyond its elastic limit or undergoes plastic deformation. Simple harmonic oscillation is a type of motion characterized by a periodic motion in which a system oscillates back and forth around its equilibrium position.

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 72.828×\(10^{-7}\)Volt is the Hall potential between the edges of the ribbon.

We know that Hall potential is given by =IB/qnd where

I is the current flowing

,B is the magnetic field ,

q is the charge of the electron,

n is the charge density of electron,

and d is the thickness

So, we are given that current(I)=110Ampere,magnetic field(B)=1.25Tesla,

charge of electron(q)=1.6×\(10^{-19}\)C, charge density (n)= 5.9x1028,thickness

(t) as 2.cm

So, putting the values of the respected quantities on the above formula ,we get

Hall potential(\(V_h\))=(110×1.25)/(1.6×\(10^{-19}\)×5.9×\(10^{28}\)×0.2×\(10^{-2}\))

=>(\(V_h\))=[137.5/1.888]×\(10^{-7}\)

=>(\(V_h\))=72.828×\(10^{-7}\)Volt.

Hence, the Hall potential is 72.828×\(10^{-7}\)Volt.

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(Complete question) is:

Figure shows a silver ribbon whose cross section is 1.0 cm by 0.20 cm. The ribbon carries a current of 110 A from left to right, and it lies in a uniform magnetic field of magnitude 1.25 T. Using a charge density value of n = 5.9x1028 electrons per cubic meter for silver, find the Hall potential between the edges of the ribbon.

Answer:

The correct answer is true.

8)

At the top of the slope, the skier has height above the ground. The energy at this point is fully potential energy. As it moves down the slope, the potential energy is being converted to kinetic energy. This is in line with the law of conservation of energy. At the mid point of the slope, the potential and kinetic energies would be equal. At the base of the slope, there is no height above the ground. The energy is fully potential. Thus, the answer is

At the midpoint of the slope

Answer:

the object's position.

Explanation: might help ion know

Answer:

When energy contained in coal is turned into heat, and then into electrical energy. As boiling water heated by the burning coal is cooled, steam forges from these cone-shaped cooling towers.

Answer:

Momentum of ball = mass of ball x velocity of ball

P(ball) = 2 kg x 20 m/s = 40 kg*m/s

Explanation:

According to the law of conservation of momentum, the total momentum of the system (skater and ball) must remain constant before and after the throw.

Let's first calculate the momentum of the ball:

Momentum of ball = mass of ball x velocity of ball

P(ball) = 2 kg x 20 m/s = 40 kg*m/s

Since the skater was at rest before throwing the ball, the initial momentum of the system was 0. Therefore, the final momentum of the system after the throw must also be 40 kg*m/s to conserve momentum.

The momentum of the skater after the throw can be calculated as follows:

P(skater) = P(system) - P(ball)

P(skater) = 40 kgm/s - (2 kg x 20 m/s)

P(skater) = 0 kgm/s

This means that the skater has no momentum after throwing the ball. Since momentum is equal to mass times velocity, the skater's velocity must also be 0. Therefore, the skater remains at rest on the frictionless rink after throwing the ball.

Answer:

I think it's 250

Explanation:

If the car is traveling 50 km/hr that means every hour, the car drives 50 km. So if you want to know how far it will go in 5 hours you do 50x5.

The magnitude of the electric field is 17.80

We are given that,

e = (-11i^+14j^)n/c

x component = -11

y component = 14

To calculate the magnitude of the electric field we can use formula ,

e = √x² + y²

e = √-11² + 14²

e = √121 + 196

e = √317

e = 17.80

Therefore , the magnitude of the electric field would be 17.80.

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Stars with greater temperatures tend to have lower magnitudes

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they made the HR Diagram

The capacitor with the smaller plate separation will have a stronger electric field between the plates.

The electric field strength in a capacitor is determined by the voltage applied across the capacitor and the distance between the plates. According to the principles of electrostatics, the electric field strength is directly proportional to the voltage and inversely proportional to the plate separation. In other words, when the voltage applied across the capacitor increases, the electric field strength between the plates also increases. Conversely, when the plate separation decreases, the electric field between the plates becomes stronger. This relationship illustrates how adjusting the voltage and plate separation can control the electric field strength in a capacitor, which is a crucial factor in its operation and functionality.

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The potential energy is 4389 J.

Potential energy saved energy that relies upon the relative position of numerous components of a gadget. A spring has greater potential energy when it is compressed or stretched. A steel ball has extra capability strength raised above the ground than it has after falling to Earth.

Potential energy = mgh

m = mass

g = acceleration due to gravity

Here, mg = 627 N

h = height, given = 7 m

Put the values in the formula, mgh

potential energy = mgh

potential energy = 627 × 7

potential energy = 4389 J

Hence, the potential energy is 4389 J.

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Answer:

12.5

Explanation:

the formula v⁰y=usin∅

therefore substitution of the values

v⁰y= 22sin(35) = 12.5

The time T at which the two balls are at the same height is half the time (τ) it takes for the second ball to be thrown after the first ball or  ½ τ.

Let's assume the initial speed of both balls is v₀, and the time it takes for the second ball to be thrown after the first ball is τ seconds.

The equation for the vertical displacement (h) of an object in free fall can be given as:

h = v₀ * t - ½ * g * t²

For the first ball, the time t is T, and for the second ball, the time t is T - τ (since the second ball is thrown τ seconds after the first).

Setting up the equations for the displacements of the two balls:

h₁ = v₀ * T - ½ * g * T²

h₂ = v₀ * (T - τ) - ½ * g * (T - τ)²

v₀ * T - ½ * g * T² = v₀ * (T - τ) - ½ * g * (T - τ)²

v₀ * T - ½ * g * T² = v₀ * T - v₀ * τ - ½ * g * (T² - 2τT + τ²)

½ * g * T² = - ½ * g * T² + g * τT - ½ * g * τ²

g * τT = ½ * g * τ²

τT = ½ * τ²

T = ½ * τ

Therefore, the time T at which the two balls are at the same height is ½ * τ.

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The roller coaster must be traveling at a minimum speed of approximately 8.81 m/s (or 31.7 km/h) at the top of the loop to prevent passengers from falling out.

To determine the minimum speed required for a roller coaster to prevent passengers from falling out at the top of a circular loop, we can use the concept of centripetal force. At the top of the loop, the net force acting on the passengers should provide enough centripetal force to keep them moving in a circular path without falling out.

The centripetal force required is provided by the gravitational force acting on the passengers. At the top of the loop, the gravitational force and the normal force (which acts perpendicular to the surface of the track) combine to provide the centripetal force.

The gravitational force is given by the equation:

Fgravity = m * g

Where m is the mass of the passenger and g is the acceleration due to gravity (approximately 9.8 m/s²).

The normal force at the top of the loop is equal to the gravitational force plus the centripetal force

Fnormal = Fgravity + Fcentripetal

The centripetal force is given by:

Fcentripetal = (m * v²) / r

Where v is the velocity of the roller coaster and r is the radius of curvature.

At the top of the loop, the net force acting on the passengers should be zero to prevent them from falling out, so we can set the normal force equal to zero:

Fnormal = 0

Fgravity + Fcentripetal = 0

m * g + (m * v²) / r = 0

Solving for v, we get:

v² = - (r * g)

Since the velocity cannot be negative, we take the positive square root:

v = √(r * g)

Substituting the given values

v = √(7.1 m * 9.8 m/s²)

v = 8.81 m/s

Therefore, the roller coaster must be traveling at a minimum speed of approximately 8.81 m/s (or 31.7 km/h) at the top of the loop to prevent passengers from falling out.

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The velocities did not match because each person was measuring the relative velocity of the other drivers from their own perspective.

The reason why the three drivers' velocity measurements did not match is because they were measuring the relative velocities of the other drivers from their own perspectives. This means that each driver's measurement was influenced by their own motion and position.

For example, if one driver was traveling towards another driver, their velocity measurement would be higher than the velocity measurement of the driver who was traveling away from the same driver.

Therefore, it is important to take into account the observer's motion and position when measuring velocities to ensure accurate measurements.

This phenomenon is known as the observer effect and is commonly observed in physics.

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The atomic mass of an element is often given as a range rather than a specific value.

Based on the information provided, it appears that 5626Fe2656Fe and 5627Co2756Co are two different isotopes of iron and cobalt, respectively. The atomic mass of an element is the weighted average of the masses of all of its naturally occurring isotopes, taking into account their relative abundances.

In this case, it appears that 5626Fe2656Fe has an atomic mass of 55.934939 uu, while 5627Co2756Co has an atomic mass of 55.939847 uu. This means that, on average, atoms of iron have a mass closer to 55.934939 uu, while atoms of cobalt have a mass closer to 55.939847 uu.

It's worth noting that the atomic mass of an element can vary slightly depending on the isotopes present and their relative abundances.

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Answer:

answer is A

Explanation:

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