ANSWER THESE (EARTH SYSTEMS) QUESTIONS GET A BRAINLY AND FREE PINTS (2024)

The given statement " to achieve good piezoelectric response, a material should have both a high piezoelectric coefficient and have high electrical resistivity." is false because to achieve good piezoelectric response, a material should have a high piezoelectric coefficient, but low electrical resistivity.

A high piezoelectric coefficient means that the material has a strong ability to generate an electrical charge when subjected to mechanical stress, which is the hallmark of good piezoelectric performance. However, high electrical resistivity reduces the flow of electrical charge, which can hinder the performance of piezoelectric materials. Therefore, to achieve good piezoelectric response, a material should have a high piezoelectric coefficient and low electrical resistivity.

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A machine can increase force, change force direction, increase velocity.

What is work?

A machine is a physical system that use power to exert forces, regulate movement, and carry out an action. The phrase is frequently used to refer to both manmade devices that use engines or motors as well as natural biological macromolecules like molecular machines.

To make the process easier, machines are utilized. In general, it is believed that machines enhance the quantity of work done in order to do the task quickly. However, this is untrue because energy is a form that can only be transferred, not created or destroyed, as work is a form of energy.

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The sun emits Ultra-violate light but a light bulb does not.

What is sun?

A heated ball of incandescent gases at the centre of our solar system, the sun is a star. Beyond the distant Neptune and Pluto's orbits, it has a significant impact.

There wouldn't be any life on Earth without the sun's powerful energy and heat. Even though it is unique to us, the Milky Way galaxy is home to billions of stars similar to our sun. The Earth would be the size of a US coin if the sun were the height of a standard front door.

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The provided statement declares that the amount of coal will only last 200 days.

What materials make up coal?

It mostly consists of carbon and compounds, which may release energy through combustion (burning). The most common oil and coal in the US is coal, which is also the world's greatest energy source for producing power.

Coal is measured in pounds, and one pound is equivalent to one pound. When there are many pounds, the measurement is made in pounds.

Now ,

Total amount of coal = 200 lb

Volume of coal used per day = 1 lb

Therefore,

The required number of day the coal will last = ( total volume of coal )÷ ( Volume of coal uses each day )

= 200lbs ÷ 1

=200

The provided volume of coal will thus last for 200 days.

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A ring with a radius of R is evenly covered in positive charge Q. At a distance of x from the centre, a particle with mass m and a negative charge q is positioned on its axis.

What is the distribution of positive charge Q?

A ring with a radius of R is uniformly covered with a positive charge Q. At the centre of the ring is a small test charge, q.

Then. If q > 0 and is displaced in the plane of the ring away from the centre, it will be pushed back in that direction.

Charge q will return to its original place after travelling once around a circle with radius r.

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The objects will roll the greatest distance up the incline before coming to rest is object which has shape: ring mass:M and R:2r.

Definition of inclined Plane

Inclined plane is a flat plane that is placed obliquely (forming a certain angle) so as to minimize the power force. As we know, the power force is the force exerted on a particular object. This time, our discussion is about the force exerted to move the object.

In addition to the definition above, an inclined planemeans a flat surface that has an angle, which is not a perpendicular angle, to the horizontal surface. So in essence, this inclined plane has an angle that is less than 90°.

The working principle of an inclined plane is to overcome large obstacles by applying a relatively smaller force over a longer distance, than if the load was lifted vertically. In civil engineering terms, the slope (the ratio of height and distance) is called the gradient.

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An indicator that orients you when defining a motion is called the reference point. The reference point provides a fixed frame of reference for observing and describing the position, velocity, and acceleration of an object.

How can you explain the use of reference point?

If you are describing the motion of a car on a highway, you can use the side of the road or a specific landmark as the reference point. By using a reference point, you can determine the position, velocity, and acceleration of the car.

How can you determine an object is in motion?

An object is considered to be in motion if its position changes relative to a reference point over time. There are several ways to determine if an object is in motion like Observing its position, measuring its velocity and observing its acceleration.

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The normalization of a wave function is a property that can change over time as the wave function evolves due to the Schrödinger equation. However, it can be shown that if a wave function is normalized at one time, it will remain normalized at all later times if the Hamiltonian operator is a self-adjoint operator.

The time evolution of a wave function is given by the Schrödinger equation, which is a partial differential equation that describes the evolution of a wave function over time. The Schrödinger equation can be written as:

iℏ ∂ψ/∂t = H ψ

where ψ is the wave function, H is the Hamiltonian operator, and i is the imaginary unit. The Hamiltonian operator describes the total energy of the system and includes the kinetic and potential energy of all particles in the system.

If the Hamiltonian operator is a self-adjoint operator, it can be shown that the norm of the wave function (i.e. the square of the wave function integrated over all space) is constant in time, meaning that the wave function will remain normalized as it evolves over time. In other words, if the wave function is normalized at one time, it will remain normalized at all later times.

This property is a result of the unitary nature of quantum mechanics, which ensures that probabilities are conserved in time. The norm of the wave function represents the probability density, so if the wave function is normalized, the probabilities of all possible outcomes add up to 1.

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The force exerted by the ball on the club will be comparable in magnitude but will be applied in the opposite direction. "For every action, there is an equal and opposite reaction," states Newton's third rule of motion. Therefore, the ball will exert a -200 N rearward force on the club.

What are the names of the two opposing forces?

Third law of motion These two forces—also known as action and reaction forces—are the subject of Newton's work. The following is how Newton's third law is formally stated: Every action has an equal and opposite response.

What does a force unit mean?

The newton, abbreviated N, is the SI unit of force. The force-relevant base units are The symbol for the length unit known as the meteris m. the kilogram(kg), isa unit of mass. The sign for the unit of time is sor the second.

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Mary should speed up at a rate of 70 ms - 2 if she and Sally must crossing an end of the race side by side.

Why is acceleration a good thing?

Acceleration refers to the speed at which velocity changes. It's not always the case, but acceleration frequently denotes a shift in pace. The direction of an object's motion is changing, even though it moves in a circular pattern and keeps the same speed.

What is acceleration? What is its SI equivalent?

In physics, acceleration is the rate at which the velocity of the an object changes in relation to time. According to Newton's Second Law, the sum of all loads exerted on an item results in its acceleration. Meter per seconds squared (m s2) is the unit of acceleration used in the SI system.

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If the wavelength of the wave is increased to 10m and the speed stays the same, the frequency of the wave will be halved i.e. 60Hz.

What is the relationship between frequency and wavelength?

Wavelength is the length of a single cycle of a wave, as measured by the distance between one peak or trough of a wave and the next.

The wavelength is often designated in physics as λ, and corresponds to the velocity of the wave divided by its frequency.

λ = v/f

This equation reveals that the wavelength is inversely proportional to the frequency of a wave. Hence, if the wavelength of the wave in this question is increased to 10m, the frequency will decrease by half i.e. 60Hz.

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The change in volume of the device during this cooling is calculated to be -0.013 m^3.

What is pressure?

Force that is applied perpendicular to surface of any object per unit area over which force is distributed is called as pressure .

Pressure remain constant for weighted piston cylinder

So, P1 =P2

We know gas constant ,R = 259.81 j/Kg- K = 0.2598 kJ/kg K

Given, m1 =m2 = 0.01 kg; P1 = 20kPa; T1 = 100 degree C = 373 K

and T2 = 0 degree C= 273 K

As we know, P1V1 =m RT1

So, V1= m RT1/P1

= 0.01 * 2.598 *373/20

V1 = 0.0484 m3

As, P2V2 =m RT2

V2= m RT2/ P2

V2 = 0.01 * 2.598 *273/20

So, V2 = 0.0.3546 m3

Now, ΔV = V2 - V1

= 0.0354 - 0.0484

= -0.013 m3

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The wavelength of the sound wave produced by the bagpipe is 0.773 m.

What is a wave length?

The separation between two identical locations in two succeeding waves is known as the wavelength of a wave. The separation between each wave's crest (or trough) and the next is known as the wavelength. Equations that describe wavelength use the Greek letter lambda as the representation.

The wavelength of light determines its hue, much as the wavelength of sound determines its pitch. The visible spectrum of light has wavelengths between around 700 nm (red) to 400 nm (violet). Audible sound has a wavelength that ranges from 17 mm to 17 m. Compared to visible light, audible sound has much longer wavelengths.

Given, Frequency of sound, f = 440 Hz

Speed of sound, v = 340 m/s

For the wavelength of the sound wave,

v = f × λ

Putting the values,

λ = [tex]\frac{340}{440}[/tex]

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The world heavyweight boxing champion punches a piece of paper in midair, accelerating it from rest to 23.0 m/s in 0.060 seconds. The paper weighs 0.003 kg.

How do you gauge a punch's momentum?

Transferring momentum is the key to receiving a punch. If you don't take action, the force of the fist striking you will be transmitted to your body. A fist has a mass of m and moves towards you at a given velocity, v. Momentum (p = mv) is equal to the product of mass with velocity (mass times velocity).m=0.003kg , v=26.5m/s u=0(the paper is punched from rest) t=0.044s F=1.8N

What is the punch's force?

An average human punch produces 360–450 pounds of force altogether, or 120–150 psi. Remember that these figures are averages, meaning that some persons fall outside of the range on both the lower and upper ends.

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The distance between the two electrons is q√K/2mg,where q is the charge of the electron.

The electron ( e or β ) is a subatomic molecule with a negative one rudimentary electric charge. Electrons have a place with the original of the lepton molecule family, and are by and large remembered to be rudimentary particles since they have no known parts or base

We know that force exerted by each electron on other is electrostatic force which is given by the formula,

F=(Kq₁q₂) / r²

where q₁,q₂ are the charges of the electron and r is the distance between them.

Since,both are electrons,q₁=q₂.

Now,both electrons have some mass which we assume as m.Due to presence of acceleration due to gravity,both act certain amount of force which is equal to their weight i.e.mg

So,total weight of two electrons is=2mg

Now,2mg=(Kq₁q₂) / r²

=>2mg=Kq²/r²

=>r²=Kq²/2mg

=>r=√Kq²/2mg

=>r=q√K/2mg.

Hence,distance between two electrons is q√K/2mg.

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(Complete question) is:

one electron is on the ground. another electron is in the air, and is at the exact location where the upward force of repulsion between the two charges is equal in magnitude to the weight of the electron. what is the distance between the electrons?Assume q as charge,m as mass of electron.

Precession is the slow and continuous change in the orientation of the rotational axis of a spinning body, such as a spinning top or the Earth.

When compared to its orbital plane around the sun, the Earth's rotational axis tilts at an inclination of about 23.5 degrees.

The Earth's rotational axis travels in a round pattern in space as a result of precession; one full cycle takes about 26,000 years to complete. The celestial poles, which are the spots in the sky where the Earth's rotational axis crosses the celestial sphere, are impacted by this movement of the rotational axis.

The Earth's spinning axis points in a different direction over time as a result of precession, which affects the position of the celestial poles. The position of the stars as seen from Earth is then impacted by this.

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The work done is 10 J and it took 2 seconds to do the work.

So, power = work done / time taken

Power = 10 J / 2 s

Power = 5 Watts

So, the body has a power of 5 Watts.

What is power?

Energy transfer or work output is measured in terms of power. It has a scalar value and is quantified in watts (W). P = W/t, where P represents power, W is the amount of work completed, and t is the amount of time required, which is the formula for power.

Power can be used to define the rate of heat transmission in a system, the rate at which a machine performs work or the rate at which energy is transferred in a circuit. It is a key idea in physics since it is applicable to many disciplines, such as electrical engineering, mechanics, and thermodynamics.

Power is also referred to as activity in ancient writings. A scalar quantity is a power.

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Energy efficiency refers to the use of less energy to perform the same tasks.

Meanwhile law of conservation of energy states that energy cannot be created or destroyed, only converted from one form to another; a machine's efficiency below 100% does not violate the law of conservation of energy because some energy is inevitably lost as waste heat during energy conversion processes.

Energy efficiency refers to the ability to perform a task using the minimum amount of energy necessary. Energy efficiency is important because it helps reduce the energy consumption and greenhouse gas emissions that result from energy production.

A machine that is not 100% efficient does not violate the law of conservation of energy because energy is not destroyed, only converted from one form to another. When energy is converted from one form to another, some energy is inevitably lost as waste heat. According to the principle of energy conservation, energy can neither be created nor destroyed; rather, it can only be transformed from one form into another.

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The actual efficiency of the plant is [tex]17.9[/tex]%.

What do you understand by geothermal power?

Geothermal power is a form of renewable energy that harnesses heat from the Earth's interior to generate electricity. This heat is captured through geothermal wells or reservoirs and used to drive a turbine to generate electricity.

What are the heat sources of geothermal power?

The heat sources can be found in areas with volcanic activity or hot springs. Geothermal power is considered a clean and sustainable source of energy, as it emits deficient levels of greenhouse gases compared to fossil fuel power plants.

The actual efficiency of geothermal power will be:

Efficiency = (Net electrical output) / (Heat input)

Net electrical output [tex]=4.3 M W[/tex]

Heat input [tex]=24MW[/tex]

Therefore, Efficiency [tex]=4.3/24=0.179[/tex] or [tex]17.9[/tex]%.

So, the actual efficiency of the plant is [tex]17.9%[/tex]%.

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Reflectors and refractors are the two primary categories of optical telescopes. Refractors utilise a lens to focus light, while reflectors use a mirror.

Can larger telescopes see objects that are fainter?

Compared to tiny telescopes, large telescopes can collect more light. Dimmer objects become visible in more light, and there is more light available for analysis. To gather enough light to perform spectroscopic analysis on an extremely dim object.

one telescope has = 150mm

second telescope has = 250mm

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At a point x distance from a point charge Q, the ratio between the strength of the electric field and the strength of the electric potential will be 1/x.

From an electric field's electric potential, how can you determine its size?

The electric field can be calculated from the electric potential if it is known at all points in a given area of space. The electric field is represented in vector calculus notation as E = grad V, where grad V is the electric potential's gradient.

How can you determine a magnetic field's strength?

The equation specifies how much force will be exerted on a wire carrying current I and having length L in a magnetic field. is the angle formed by the wire and the magnetic field in the equation F=ILBsin. Considering that the field and curve are perpendicular to the force,

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The Sagittarius A black hole, which is located near the Milky Way's center, made the statement.

Why is it called the Milky Way?

A Greek tale about the milk-sprinkling goddess Hera gave rise to the name of the Milky Way. Our galaxy has numerous names in those other areas of the globe. It is known as the "Silver River" in China and the "Backbone of Night" in the Kalahari of southern Africa.

Where is Earth in the Milky Way?

The Milky Way's Orion Arm, which is around two-thirds of the galaxy's distance from the galaxy's core, is where Earth is situated. Here, we are one of the eight planets that make up the Solar System.

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The distance traveled by electric vehicle will be 8.9 km.

EVs are vehicles that are either partially or fully powered on electric power. Electric vehicles have low running costs as they have less moving parts for maintaining and also very environmentally friendly as they use little or no fossil fuels (petrol or diesel).

The car travels 59 miles in 1 gallon.

1 mL has 0.000264 gallons

For 355 mL = 0.09378 gallons, the car will travel,

Multiply the gallons with the 59 mi/gallon,

59 × 0.09378 = 5.53 miles

The distance in kilometers is 8.9.

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"Material A: high dielectric constant low electrical resistivity is best for optimal performance."

A capacitor is a device used to store electrical energy and it consists of two conductive plates separated by a dielectric material. The choice of material for the charge storage layer is important for determining the performance of the capacitor. The dielectric constant is a measure of a material's ability to store electrical energy and the electrical resistivity is a measure of a material's ability to conduct electrical current. For optimal performance in the charge storage layer of a capacitor, material A is the best choice as it has a high dielectric constant and low electrical resistivity. This means that the material has a high ability to store electrical energy and a low resistance to electrical current, making it ideal for use in a capacitor. Material B would not be an optimal choice for a charge storage layer as it has a low dielectric constant and high electrical resistivity, meaning that it is not an efficient material for storing electrical energy and has high resistance to electrical current.

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The speed change over time is measured by the size of the velocity vector along the path. The centripetal force as it circles the instant radius of curvature is the size of the acceleration vectors normal to the path (t).

What are magnitude and its definition?

Formulas for a vector's magnitude Magnitude Formula for just a Vector with the Origin as the End Point. Magnitude Formula for just a Vector when (x1, y1) and (x2, y2) are the starting and ending points | v | = (x 2 + x 1) 2 + (y 2 + y 1) 2.

What is the magnitude?

In order to create highly rough comparisons, orders in magnitude are typically used. It is primarily used when notating scientific data. One is roughly 10 times greater than the other if two integers are separated through one order of magnitude. They differ by the a factor of around 100 if they are separated over two orders of magnitude.

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Since the percent difference between these frequencies is only 0.15%—less than the limit of 0.3%—it wouldn't be able to differentiate among them.

Who defines frequency?

the meaning of frequency 1: the regular occurrence of something the frequency of car accidents The amount of times the same series of values is repeated by a periodic function throughout the course of a unit fluctuation of the variable B: A set of data's number, percentage, or percent of things in a specific category

What are the frequency's bounds?

Frequency. In fact, it seems unlikely that there are any lower or higher restrictions to frequency, other from those that apply to... Its frequency is 2 every second if the period, or timeframe, needed to complete one cycles or oscillation is 1/2 second; it is 100 per hour if the duration is 1/100 of an hour.

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The advantages includes Reduced light pollution from Earth's atmosphere, lack of atmospheric turbulence for clearer observations, access to different astronomical phenomena and celestial objects Protection from solar radiation and cosmic rays and extended periods of darkness for uninterrupted observations. All options are correct.

There would be many benefits if an observatory were constructed on the lunar surface. First, less light pollution from the Earth's atmosphere would be present, making it easier to observe celestial objects.

Secondly, the Moon's lack of atmospheric turbulence would create stable viewing conditions, reducing distortions and enhancing image clarity.

Thirdly, having access to many astronomical phenomena and celestial objects would offer special research opportunities. Fourthly, more sensitive studies would be possible due to the lunar surface's partial shielding from solar and cosmic rays.

The prolonged darkness on the Moon would also allow for uninterrupted observations free from light pollution.

Thus, all options are correct.

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Your question seems incomplete, the probable complete question is:

the moon has no sustained atmosphere. what advantages would you have if you built an observatory on the lunar surface? (select all that apply.)

A) Reduced light pollution from Earth's atmosphere.

B) Lack of atmospheric turbulence for clearer observations.

C) Access to different astronomical phenomena and celestial objects.

D) Protection from solar radiation and cosmic rays.

E) Extended periods of darkness for uninterrupted observations.

The period of a pendulum is proportional to the square root of the length of the pendulum divided by the acceleration due to gravity, i.e. T ∝ √(l/g).

Gravity is a force of attraction between two bodies in the universe. It is what keeps planets in orbit around stars and what gives us the feeling of being pulled towards the ground. The strength of gravity is determined by the mass of the objects and the distance between them. The extra huge an item is, the stronger its gravitational pull. The farther aside items are, the weaker the force of gravity between them.

Sir Isaac Newton first described gravity in his law of universal gravitation, stating that every particle in the universe attracts every other particle with a force proportional to the made of their hundreds and inversely proportional to the square of the distance among them. Gravity is a fundamental force of nature and plays a crucial role in shaping the universe as we know it today.

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