a person of mass 50 kg jumps 0.8 m above the ground. if air drag is negligible, at least how much energy does the person need provide in order to make such a jump?

The current that is flowing in the circuit is 41.4 mA.

A parallel circuit is an electrical circuit that has multiple branches for the current to flow through. In a parallel circuit, the components are connected in such a way that the voltage across each component is the same, but the current flowing through each component can be different.

We know that;

1/RT = 1/80 + 1/200 + 1/150 + 1/100

1/RT = (0.0125) + (0.005) + (0.0067) + (0.01)

RT = 29.2 ohms

I = V/R

I = 12/29.2

I = 41.4 mA

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The electromagnetic waves being used by the microwave oven have a wavelength of approximately 0.08 meters.

Based on the information given, we can estimate the wavelength of the electromagnetic waves being used by the microwave oven using the distance between two consecutive unmelted cheese strips.

The distance between two consecutive unmelted cheese strips is about 4cm, which represents half a wavelength, since the cheese strips correspond to regions where the microwaves are reflecting off the metal walls of the oven. Therefore, the full wavelength of the electromagnetic waves being used by the oven is approximately 2 times 4cm, or 8cm.

Converting this to meters, we get a wavelength of 0.08 meters (since there are 100 centimeters in a meter). Therefore, the electromagnetic waves being used by the microwave oven have a wavelength of approximately 0.08 meters.

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To determine the minimum number of materials that can account for a planet's density of 7.4 g/cm³, we must first identify materials with known densities that could potentially combine to reach the given value.

However, without any specific materials provided, it is not possible to give an exact minimum number. In theory, a single material with a density of 7.4 g/cm³ could exist, making the minimum number one. Alternatively, various combinations of materials with different densities could be mixed to achieve the desired density.

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The minimal quantity of materials needed to explain a planet's density of 7.4 g/cm3 may change.

The exact densities of the constituent components and potential combinations determine the bare minimum of materials that can explain a planet's density of 7.4 g/cm3. A blend of iron, olivine, and pyroxene in various ratios could explain this density, among other conceivable combinations. A blend of water and rock in varied ratios is an additional combination that is possible.

But it's vital to remember that a planet's real makeup depends on a variety of things, including how it formed and the conditions in which it did.

Therefore, depending on the unique properties of the planet in question, the minimal quantity of materials needed to explain a planet's density of 7.4 g/cm3 may change.

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A 70 kg person would burn about 527 MET-minutes per week if they exercised for 60 minutes each day, three days per week, at a moderate effort of 6 METs.

The energy expended during physical activity is measured in METs. The sum of the individual's oxygen intake (VO2) times their weight in kilogrammes and the number of minutes spent exercising is the total MET-minutes.

The formula 3.5 + (METs) can be used to calculate VO2 by multiplying METs by 0.1. People can track their physical activity and make sure they are following the advised exercise standards for maintaining good health by knowing the total MET-minutes of a session.

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met-min per week for this person would be 75,600.

To calculate the met-min per week for a 70 kg person who is walking/jogging for 60 minutes per day, 3 days per week at the intensity of 6 mets, we can use the following formula:

met-min per week = met value x weight in kg x minutes per week

First, we need to calculate the total minutes per week:

60 minutes per day x 3 days per week = 180 minutes per week

Next, we can plug in the values for the met value (6), weight in kg (70), and minutes per week (180):

met-min per week = 6 x 70 x 180
met-min per week = 75,600

Therefore, the met-min per week for this person would be 75,600.

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The geocentric model of the universe that was widely accepted in scientific and religious circles until the 16th century was that of Ptolemy, also known as the Ptolemaic system.

The geocentric model of the universe, widely accepted in scientific and religious circles until the 16th century, was based on the idea that Earth was at the center of the cosmos.

This model, also known as the Ptolemaic system, was developed by the ancient Greek astronomer Claudius Ptolemy in the 2nd century AD. According to this model, all celestial objects, including the Sun, Moon, and stars, revolved around the Earth in circular or epicyclical paths.

The geocentric model was dominant for over a thousand years due to its alignment with religious beliefs and its ability to explain astronomical observations.

However, the 16th-century work of Nicolaus Copernicus and later astronomers led to the acceptance of the heliocentric model, which placed the Sun at the center of the solar system and was a more accurate representation of the cosmos.

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The time taken is twice the time taken to decrease from the initial voltage to one-half initial voltage.

The amount of time it takes for a voltage to decrease from one level to another depends on the characteristics of the system generating the voltage.

Assuming that the voltage is decreasing exponentially over time, the time it takes for a voltage to decrease from one level to another can be calculated using the formula:

[tex]t = -(ln(Vf/Vi))/λ[/tex]

where t is the time taken, Vi is the initial voltage, Vf is the final voltage, and λ is the decay constant of the system generating the voltage.

If the voltage decreases from one-half its initial voltage to one-fourth its initial voltage, then [tex]Vi = 1, Vf = 1/4[/tex], and the voltage has decreased by a factor of 2.

Assuming that the decay is exponential, the time it takes to decrease by a factor of 2 is:

[tex]t = -(ln(1/2))/λ[/tex]

We can simplify this expression using the fact that [tex]ln(1/2) = -ln(2)[/tex], which gives:

[tex]t = ln(2)/λ[/tex]

Similarly, the time it takes to decrease by a factor of 4 is:

[tex]t = -(ln(1/4))/λ = ln(4)/λ = 2ln(2)/λ[/tex]

So, the ratio of the time taken to decrease from one-half initial voltage to one-fourth initial voltage is:

[tex]t(1/4) / t(1/2) = (2ln(2)/λ) / (ln(2)/λ) = 2[/tex]

Therefore, the time taken to decrease from one-half initial voltage to one-fourth initial voltage is twice the time taken to decrease from the initial voltage to one-half initial voltage.

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Answer:√4 = 2.

Explanation:

When the spring gun is fired for the first time, let's assume that the spring was compressed by a distance of x, and the plastic ball is shot out at a speed of v.

Now, the spring is compressed twice the distance it was on the first shot. Therefore, the new compression distance is 2x.

Let's assume that the speed of the plastic ball after the second shot is v'. We can use the principle of conservation of energy to relate the speed of the ball to the compression distance of the spring.

For the first shot, the energy stored in the spring (½kx², where k is the spring constant) is converted into the kinetic energy of the ball (½mv², where m is the mass of the ball). Therefore,

½kx² = ½mv²

For the second shot, the energy stored in the spring (½k(2x)² = 2kx²) is again converted into the kinetic energy of the ball (½mv'²). Therefore,

2kx² = ½mv'²

Dividing the second equation by the first equation, we get:

v'²/v² = 4

Therefore, the speed of the plastic ball is increased by a factor of √4 = 2. So, the ball's speed is increased by a factor of 2.

A rainbow that you view via a train window while riding will follow you as you travel forward. The rainbow won't be visible for very long because it will appear to move with you as the train travels along its course.

This occurs as a result of the sun, precipitation, and your eyes' angle constantly shifting as the train travels, which also causes the rainbow's position to change.

The rainbow won't be visible for very long because it will appear to move with you as the train travels along its course. This phenomena also affects other moving objects and landscapes, such as mountains, trees, and buildings, in addition to rainbows.

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A rainbow that you view via a train window while riding will follow you as you travel forward. The rainbow won't be visible for very long because it will appear to move with you as the train travels along its course.

explanation - If you view a rainbow out your window while riding in a train, you'll see that the rainbow moves along with you. As you move forward, the angle between the sun, your eyes, and the raindrops that create the rainbow changes, causing the rainbow to appear to move with you. However, if the train is moving too fast, you may soon pass by it, leaving it where you first saw it. therefore - its position appears relative to the viewer's location and angle of observation, hence option is B

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The differences between ambient sounds, sound effects, and Foley sounds.

Ambient sounds, also known as background sounds or atmospheric sounds, are the continuous, subtle noises that help create a sense of atmosphere or location in a scene. They differ from sound effects in that sound effects are distinct, purposeful sounds added to emphasize specific actions or events in a scene.

Foley sounds, on the other hand, are a type of sound effect created manually by a Foley artist to match and enhance the actions happening on-screen. They are different from regular sound effects because they are typically recorded live in a studio using various objects and materials to create realistic, synchronized sounds for actions such as footsteps, clothing rustles, and object handling.

In summary:

1. Ambient sounds create a sense of atmosphere or location and are continuous and subtle.
2. Sound effects are distinct, purposeful sounds added to emphasize specific actions or events.
3. Foley sounds are a type of sound effect created manually by a Foley artist to match on-screen actions.

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To obtain a positive reading on a voltmeter, the positive (red) terminal of the voltmeter should be connected to the electrode with the higher potential or voltage.

When measuring the potential difference between two electrodes with a voltmeter, the voltmeter will read a positive value if its positive (red) terminal is connected to the electrode with the higher potential, and its negative (black) terminal is connected to the electrode with the lower potential.

This is because the voltmeter measures the difference in electric potential or voltage between the two electrodes, and the potential difference is defined as the difference between the higher potential and the lower potential.

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The length must be increased by 0.0099 m to correct the period of the clock to 2.00 s.

Given:

T₀ = 2s

Original time period, T = 1.99s

The time period of a pendulum is:

T = 2π √(L/g)

Let the length of the pendulum be L₀.

The time period is:

T₀ = 2π √(L₀/g)

(T₀/2π)2 = L₀/g

L₀ = g (T₀/2π)2

Let the real length of the pendulum be L.

T = 2π √(L/g)

(T/2π)2 = L/g

L = g (T/2π)2

Subtract both the lengths, and we get:

L₀ - L = g (T₀/2π)2 - g (T/2π)2

L₀ - L = 9.81 m/s2 ( (2.00s/2π)2 - (1.99s/2π)2 )

L₀ - L = 0.0099 m.

Hence, The length must be increased by 0.0099 m to correct its period to 2.00 s.

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The frequency of the horn of a car moving towards you would increase, while the frequency of a car moving away from you would decrease due to the Doppler effect.

The frequency of the sound waves an automobile makes will rise as it approaches you. This is due to the sound waves compression as the automobile draws closer to you, which causes them to have a shorter wavelength and a higher frequency. The Doppler effect is the name for this rise in frequency.

On the other hand, when an automobile pulls away from you, the sound waves' frequency will drop because they stretch, leading to a longer wavelength and a lower frequency. As a result, if all vehicles produce sound at the same frequency, you would hear a frequency rise for a vehicle travelling in your direction and a frequency drop for a vehicle driving away from you.

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If the car is moving towards you, the frequency of the horn will increase,moving away from you, the frequency will decrease

If the horns of all cars emitted sound at the same pitch or frequency, the frequency of the horn of a car moving toward you would appear to increase, as the sound waves are compressed and the wavelength is shortened due to the Doppler effect. Conversely, the frequency of the horn of a car moving away from you would appear to decrease, as the sound waves are stretched and the wavelength is lengthened due to the Doppler effect. This is because the observer perceives a higher frequency when the source is approaching and a lower frequency when the source is moving away.

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The ultimate fate of an isolated pulsar is determined by a combination of various physical processes that act on it over time.

The ultimate fate of an isolated pulsar depends on various factors such as its mass, rotation speed, and magnetic field strength. If the pulsar has a low mass, it may eventually spin faster and become a millisecond pulsar.

However, if it has a high mass, it may explode as a supernova, releasing huge amounts of energy and leaving behind a neutron star or a black hole.

In some cases, if the magnetic field weakens and the pulsar slows down, it may become invisible. As the neutron degeneracy pressure overwhelms gravity, the pulsar may eventually transform into a white dwarf.

Alternatively, the neutron degeneracy pressure may eventually overwhelm gravity, and the pulsar will slowly evaporate.

Overall, the ultimate fate of an isolated pulsar is determined by a combination of various physical processes that act on it over time.

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As an artificial intelligence language model, I don't have a physical body and hence, I cannot hold my breath or perform any physical activities.

However, here is a step-by-step explanation of why most people cannot hold their breath voluntarily for a long period of time:

1) Breathing: Breathing is the process of inhaling oxygen and exhaling carbon dioxide. It is essential for delivering oxygen to the body's tissues and organs.

2) Carbon dioxide: When you hold your breath, your body continues to consume oxygen, but it is not able to expel carbon dioxide as effectively. This leads to an accumulation of carbon dioxide in the body.

3) Breath-holding reflex: As the levels of carbon dioxide in the body increase, the body triggers a reflex called the "breath-holding reflex".

This reflex causes the body to breathe involuntarily, even if you are trying to hold your breath voluntarily.

4) Autonomic nervous system: The breath-holding reflex is controlled by the autonomic nervous system, which is responsible for regulating involuntary bodily functions such as breathing, heart rate, and digestion.

This means that it operates outside of our conscious control.

5) Protective mechanism: The breath-holding reflex is a protective mechanism that ensures that the body's tissues and organs receive enough oxygen to function properly.

If the body were to continue to hold its breath, the lack of oxygen could cause damage to the body's tissues and organs.

6) Limitations: While some individuals may be able to hold their breath for longer periods of time than others, eventually the buildup of carbon dioxide in the body will trigger the breath-holding reflex, and the body will start to breathe involuntarily.

This means that even if you want to hold your breath longer, your body will eventually take over and force you to breathe again.

In summary, the body's protective mechanisms, controlled by the autonomic nervous system, make it difficult for most people to voluntarily hold their breath for a long period of time.

The buildup of carbon dioxide in the body eventually triggers the breath-holding reflex, causing the body to breathe involuntarily.

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The only part of the work that is done on the outside of the garment is the basting or pinning of the zipper tape to the fabric.

The rest of the work is done on the inside of the garment. The zipper teeth are inserted between the layers of the fabric and the seam is sewn in place. The seam is then pressed open and the zipper is opened up to expose the teeth.

The zipper tape is then folded back and stitched in place, creating a clean finish on the inside of the garment. The final step is to topstitch the zipper on the outside of the garment, which reinforces the zipper and adds a decorative touch.

Overall, the centered zipper is a popular and versatile choice for many types of garments and can be easily customized to suit individual preferences.

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Answer:

A true

Explanation:

because it is talking about drugs and alcohol

The expression for x1(t) , the position of mass i as a function of time, is x1(t) = x1_0 + v1_0 * t + 0.5 * a1 * t²

To find an expression for x1(t), the position of mass 1 as a function of time, we need to consider the following terms:

1. Initial position (x1_0): The position of mass 1 at time t=0.
2. Initial velocity (v1_0): The velocity of mass 1 at time t=0.
3. Acceleration (a1): The constant acceleration acting on mass 1, if applicable.

Now, we can use the general equation for the position of an object as a function of time:

x1(t) = x1_0 + v1_0 * t + 0.5 * a1 * t²

Where x1(t) is the position of mass 1 at time t, x1_0 is the initial position, v1_0 is the initial velocity, a1 is the acceleration, and t is the time in seconds.

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The term used to describe the strength-based cluster of personality dispositions that is hypothesized to predict cultural adjustment and quality of life outcomes in culturally heterogeneous societies is "Cultural Intelligence" (CQ), as defined by Ponterotto, Mendelowitz, and Collabolletta in 2008.

Cultural Intelligence (CQ) refers to the ability of an individual to understand and appreciate cultural differences and to function effectively in culturally diverse environments. It is based on four key components: cognitive, physical, emotional, and behavioral.

Individuals with high CQ are able to adapt and interact effectively with people from different cultural backgrounds, which is becoming increasingly important in today's globalized world. CQ has been linked to various positive outcomes, such as better job performance, more effective leadership, and improved quality of life in diverse settings.

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--The complete question is, What is the term used to describe the strength-based cluster of personality dispositions that is hypothesized to predict cultural adjustment and quality of life outcomes in culturally heterogeneous societies, as defined by Ponterotto, Mendelowitz, and Collabolletta in 2008?--

The calculated values of E1 and E2, we can find the magnitude and direction of the total electric field at x=4.0 cm.

What is Magnitude?

Magnitude refers to the absolute value or size of a quantity, such as a scalar or vector quantity, without regard to its direction or sign. In physics, magnitude often represents the numerical value or measurement of a physical quantity, such as length, mass, time, temperature, electric field, or force, without considering its direction or orientation.

ote that the direction of electric field due to charge q1 at the origin (r1 = 0) will be radially outward from the origin, while the direction of electric field due to charge q2 at x=12 cm (r2 = 0.12 m) will be radially inward towards x=12 cm.

Step 4: Calculate the magnitude and direction of the total electric field at x=4.0 cm.

The magnitude of the total electric field (E_total) can be calculated as the magnitude of the vector sum of E1 and E2:

where Ex and Ey are the x and y components of the vector sum E_total.

To find the direction of the total electric field, we can determine the angle it makes with the positive x-axis:

θ = [tex]tan^{-1}[/tex](Ey / Ex)

Plugging in the values and calculating, we get:

Ex = E1 - E2 (since E1 is radially outward and E2 is radially inward)

Ey = 0 (since the electric fields are aligned along the x-axis)

θ = [tex]tan^{-1}[/tex](0 / (E1 - E2)) (direction angle)

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155-newton box going up a ramp. The gravitational potential energy in the universe totals 279J, which is what causes the box to move from point A to point B when force F is applied.

The formula for gravitational force is P.E. = mgh, whereby g is the force caused by gravity (9.8 m/s2 at the earth's surface) and h is the elevation in metres. The units for gravitational potential energy are kg m2/s2, which are the same as those for kinetic energy.

The amount of gravitational potential energy an object has depends on how high it is above the surface whenever the height is the smallest. Point B in the given diagram is the lowest point and is closest to the Earth's surface vertically.

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The wavelength of an electron with a mass of 9.11 x 10^-28 g that has been accelerated to a speed of 2.1 x 10^7 m/s is 1.23 x 10^-10 meters.

To find the wavelength of an electron that has been accelerated to a speed of 2.1 x 10^7 m/s, we can use the de Broglie equation:

wavelength = h / mv

where h is Planck's constant (6.626 x 10^-34 J*s), m is the mass of the electron (9.11 x 10^-28 g), and v is the velocity of the electron (2.1 x 10^7 m/s).

First, we need to convert the mass of the electron from grams to kilograms:

m = 9.11 x 10^-28 g = 9.11 x 10^-31 kg

Now we can plug in the values into the equation:

wavelength = h / mv
wavelength = 6.626 x 10^-34 J*s / (9.11 x 10^-31 kg)(2.1 x 10^7 m/s)
wavelength = 1.23 x 10^-10 m

Therefore, the wavelength of an electron with a mass of 9.11 x 10^-28 g that has been accelerated to a speed of 2.1 x 10^7 m/s is 1.23 x 10^-10 meters.

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Pulsed lasers are used in specific applications where short bursts of laser light are needed, such as in laser ranging, lidar, or certain medical procedures.

What is Wavelength?

Wavelength is a term used in physics to describe the distance between two consecutive points of a wave that are in phase, or the distance over which a wave completes one cycle. It is commonly denoted by the Greek letter lambda (λ) and is usually measured in units such as meters (m), nanometers (nm), or angstroms (Å).

Green laser pointers typically use a type of laser known as a diode-pumped solid-state (DPSS) laser to generate laser light at a wavelength of 532 nm, which corresponds to green light in the visible spectrum. DPSS lasers are a type of laser that uses a solid-state crystal or material as the gain medium, which is pumped by a diode laser to achieve laser emission.

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Hot gas typically produces an emission line spectrum. This means that when the gas is excited, it emits light at specific wavelengths, creating bright lines in the spectrum.

Hot gas produces an emission line spectrum. An emission line spectrum is characterized by bright lines against a dark background. This occurs because hot gas contains excited atoms that release energy in the form of photons, which correspond to specific wavelengths of light. These wavelengths often fall in the ultraviolet and visible regions of the electromagnetic spectrum.

In contrast, an absorption line spectrum occurs when light passes through a cooler gas, which absorbs specific wavelengths, creating dark lines against a continuous background. Continuous spectra are typically produced by hot, dense objects like stars or incandescent light bulbs. Infrared and ultraviolet are regions of the electromagnetic spectrum that can contain both emission and absorption lines, depending on the specific situation.

However, if the hot gas is viewed in front of a background source of light, it may also produce absorption lines in the spectrum. These absorption lines are caused by the gas absorbing specific wavelengths of light, leaving dark lines in the spectrum where those wavelengths are missing. Additionally, if the hot gas is emitting thermal radiation, it may produce a continuous spectrum that spans from infrared to ultraviolet wavelengths.

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Answer:

Electrical - electric forces between atoms are responsible for reactions between the atoms

Nuclear forces are not directly involved when 2 atoms of Oxygen combine to form a molecule of O2 or an atom of Sodium combines with an atom of Chlorine to form NaCL (table salt)

linear kinetic energy, the moment of inertia and angular velocity can be used to express the kinetic energy of a rotating object.

Thus, The translational kinetic energy of the centre of mass and the rotational kinetic energy about the centre of mass add up to the total kinetic energy of an extended object. The form of the rotational kinetic energy for a particular fixed axis of rotation is

The work-energy principle can be used to parallel build the equations for rotational and linear kinetic energy. Think about the comparison between a constant force applied to a mass m starting at rest and a constant torque applied to a flywheel with moment of inertia I.

The average velocity is half the final velocity and Newton's second law is equal to the final velocity divided by the time, the work done on the block results in kinetic energy that is equal to the work done.

Thus, linear kinetic energy, the moment of inertia and angular velocity can be used to express the kinetic energy of a rotating object.

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A balloon will stick to a wooden wall if the balloon is charged either positively or negatively.

This occurs due to the principle of electrostatic attraction. When the balloon is charged (either positively or negatively), it creates an imbalance of charges between the balloon and the wooden wall. This causes the charges in the wall to rearrange themselves to be opposite the charge of the balloon. As a result, the opposite charges attract, and the balloon sticks to the wall.

Electrostatic attraction is the force of attraction between two electrically charged objects or particles due to their opposite charges. When two objects with opposite charges come near each other, the electric field created by one object induces an opposite charge on the other object.

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If a balloon is charged positively or negatively, it will adhere to a wooden wall.

The electrostatic attraction concept is what causes this to happen. There is an imbalance of charges between the balloon and the wooden wall when the balloon is charged, either positively or negatively. As a result, the charges in the wall are repositioned so that they are in opposition to the charge of the balloon. The balloon attaches to the wall as a result of the attraction between the opposing charges.

The force that draws two electrically charged objects or particles together due to their opposing charges is known as electrostatic attraction. When two items with opposing charges are brought close to one another, the electric field produced by one of the objects causes the other object to acquire the opposing charge.

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Answer:

Total Voltage V=36*2Ω = 72Ω

We can use the formula V=IR

V=voltage

I=current

R=resistance

V=IR

I= 52/72

I=13/18

When a sound wave passes through a material, it causes the particles of that material to vibrate back and forth in the same direction as the wave.

In solids, the particles are tightly packed together and have strong intermolecular forces holding them in place. This means that when a sound wave passes through a solid, the vibrations are transmitted quickly from one particle to next. In liquids, particles are still close together, but they are not held in place as tightly as in solids. In gases, the particles are much more spread out and have weaker intermolecular forces. Sound waves tend to move more quickly through solids because of the tight packing of the particles.

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The scale that allows a respondent to express relative magnitude between the answers to a question and arranges responses in a hierarchical pattern, but does not allow researchers to determine absolute difference between responses, is called an ordinal scale.

An ordinal scale is used in research to measure the rank order of items or attributes, where the differences between them cannot be precisely quantified. The responses are ordered based on their perceived magnitude, but the actual distance between them is unknown.

Ordinal scales can be analyzed using non-parametric statistical tests such as the chi-square test or the Mann-Whitney U test, which do not assume that the data is normally distributed or that the intervals between responses are equal.

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The complete question is:

A scale that allows a respondent to express relative magnitude between the answers to a question and arranges responses in a hierarchical pattern, but does not allow researchers to determine absolute difference between responses, is called a(n) ____________