what the kinetic energy quantities in calculation pls help me​

Answer:

A change in quantity demanded refers to a variation in the amount of a good or service that consumers are willing and able to purchase, given the same price. The change in quantity demanded can be either an increase or a decrease.

Explanation:

There are several factors that can cause a change in quantity demanded:

Price change: A change in the price of a good or service can cause a change in the quantity demanded. If the price of a good or service increases, the quantity demanded will decrease (assuming everything else remains constant), and if the price decreases, the quantity demanded will increase.

Income: A change in consumer income can cause a change in the quantity demanded. If income increases, consumers may be able to afford to buy more of a good or service, which will cause the quantity demanded to increase. If income decreases, consumers may not be able to afford as much, which will cause the quantity demanded to decrease.

Tastes and preferences: Changes in tastes and preferences can also cause a change in quantity demanded. For example, if a new trend or fashion becomes popular, consumers may start to demand more of the goods or services associated with that trend.

Expectations: Consumers' expectations about future prices, availability, and income can also cause changes in the quantity demanded. For example, if consumers expect the price of a good or service to increase in the future, they may buy more of it now, which will cause the quantity demanded to increase.

Number of buyers: The number of buyers in the market can also affect the quantity demanded. An increase in the number of buyers will increase the quantity demanded, while a decrease will decrease the quantity demanded.

Answer:

sound travels through steel about 15 times faster than through air.

Explanation:

The smallest particle size a scientist can observe using a scanning probe microscope would be a nanometer, therefore the correct answer is option B.

A recognized and accepted standard for measuring other amounts of the same sort is referred to as a unit of measurement. It is predetermined by custom or law.

As given in the problem, we have to find out what is the smallest particle size a scientist can observe using a scanning probe microscope.

1 millimeters = 1 × 10 ⁻³ meter

1 nanometer = 1 × 10⁻⁹  meters

Thus, the smallest particle size a scientist can observe using a scanning probe microscope would be a nanometer, therefore the correct answer is option B.

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A

Explanation: He did find out how the continents fit together. The same rocks and fossils on different continents. He could not provide enough evidence to support his theory. Hope this helps.

Answer: THE ANSWER IS A I GOT A 100

Explanation:

Answer: Transverse waves

Explanation:

Transverse waves cause the medium to move perpendicular to the direction of the wave. Longitudinal waves cause the medium to move parallel to the direction of the wave.

The coefficient of performance of the air conditioner is 21.21.

The coefficient of performance (COP) of a Carnot air conditioner is given by the equation:

COP = Tc/(Th-Tc)

where Tc is the temperature inside the house (in Kelvin) and Th is the temperature outside the house (also in Kelvin).

Plugging in the given values, we get:

COP = 297/(311-297)

= 297/14

= 21.21

Coefficient of performance (COP) is a measure of the efficiency of a refrigeration system or heat pump. It is defined as the ratio of the amount of heat energy removed from a cold space to the amount of work done to remove that heat energy. Mathematically, the COP is given by:

COP = Qc/W

where Qc is the heat energy removed from the cold space and W is the work done to remove that heat energy.

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Answer:

Here the answer is attached

Explanation:

The two objects will be separating with a speed equal to their initial speed, which is 45 m/s in this case.

In a perfect elastic collision, the total kinetic energy of the system is conserved. This means that the initial kinetic energy of the two objects before the collision is equal to the final kinetic energy of the two objects after the collision. In addition, the total momentum of the system is also conserved.

Let's assume that the two objects have masses m1 and m2, and their initial velocities are v1 and v2, respectively.

Since the two objects are approaching each other, we can assume that their initial velocities have opposite signs.

Therefore, we have:

m1v1 + m2v2 = 0 (conservation of momentum)

So the final velocity of the two objects will be equal is the two objects have equal masses.

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Unfortunately, as an AI language model, I cannot see the truss diagram you are referring to.

However, in general, to determine the force in members of a truss, one would use the method of joints or the method of sections.

The method of joints involves analyzing the forces acting at each joint of the truss and applying the equations of static equilibrium to determine the forces in each member.

This method can be time-consuming but is effective for small trusses with a limited number of joints.

The method of sections involves cutting the truss along a section and analyzing the forces acting on the cut section.

By applying the equations of static equilibrium, one can determine the forces in the members that intersect the section. This method is quicker but may not provide information on all the members of the truss.

Both methods require a good understanding of statics and equilibrium principles. It is essential to ensure that the truss is stable and that no member is under excessive stress.

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Answer:

1875 j

Explanation:

f * d = work

your AVERAGE force is (210+ 40)/2 = 125 N

125 * 15 = 1875 j

The work done during this period will be 1875 J.. if the body is displaced in the same direction of the force it will be positive.

Work done is defined as the product of applied force and the distance through which the body is displaced on which the force is applied.

Work may be zero, positive and negative.it depends on the direction of the body displaced

The given data in the problem is;

F is the average force applied by the worker

d is the displacement = 15 m

The average force is ;

\(\rm F_{AVG} = \frac{F_1+F_2}{2} \\\\ F_{AVG} = \frac{210+40}{2} \\\\ F_{AVG}=125 \ J\)

The work done by the worker will be;

\(\rm W= Fd \\\\\rm W= F_{AVG}d \\\\W= 125 \times 15 \\\\ \rm W=1875 \ J\)

Hence the work done during this period will be 1875 J.

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The gravitational force of attraction between the Earth and Jupiter is approximately 1.32 x 10²⁸ N.

The gravitational force of attraction between two objects can be calculated using Newton's law of universal gravitation, which states that the force (F) is proportional to the product of their masses (m₁ and m₂) and inversely proportional to the square of the distance (r) between their centers. Mathematically, the formula is expressed as:

F = (G * m₁ * m₂) / r²

where G is the gravitational constant.

m₁ = 6 x 10²⁴ kg (mass of Earth)

m₂ = 1898.6 x 10²⁴ kg (mass of Jupiter)

r = 5.88 x 10¹¹ m (distance between Earth and Jupiter)

Plugging in the values into the formula, we have:

F = (6.67 x 10⁻¹¹ N m²/kg²) * (6 x 10²⁴ kg) * (1898.6 x 10²⁴ kg) / (5.88 x 10¹¹ m)²

Calculating the expression, we find:

F ≈ 1.32 x 10²⁸ N

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THE COMPLETE QUESTION IS:

Determine the gravitational force of attraction between the Earth and Jupiter given the mass of the earth is 6 x 10²⁴ kg the mass of Jupiter is 1898.6 x 10²⁴ kg and the closest distance is about 5.88 x 10¹¹

Answer:

Chemical energy is energy stored in the bonds of atoms and molecules. ...

Mechanical energy is energy stored in objects by tension. ...

Nuclear energy is energy stored in the nucleus of an atom—the energy that holds the nucleus together. ...

Gravitational energy is energy stored in an object's height.

Answer:

Nuclear power

Electricity

Mechanic

Gravity

Explanation:

According to Puddicombe, the result of  not taking any time out to simply look after our brains is that:

In his popular talk, Puddicombe explained that we have been caught up with the internet and other activities so much so that we do not have time to look out for our brains.

For this reason, we stress our brains and become distant from the most important things in life.

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The - 60.6 N is the average force experienced by the clay.

The force applied by a body moving at a constant velocity (rate of speed) over a fixed time period is known as the average force. The magnitude and direction of force are both vector quantities. The term 'average' denotes that this velocity was not precisely measured or was not 'instantaneous.' As a result, the average force over a given time period is equal to the body's mass multiplied by its average velocity. The magnitude and direction of the average force are both vector quantities.

Average acceleration = Δv/t

We know F = ma,

We have m = 0.24

Δv = Final velocity - Initial velocity

Δv = (0 - 23) m/s
Δv = -23 m/s

t = 91 ms or 0.91 s

As we know acceleration (a) = v/t

So, a = -23/0.91

a = - 25.27 m/s²

Put the above value in formula F = ma.

F = (0.24 kg) × (-25.27 m/s²)

F = - 60.6 N

Therefore, the average force experienced by the clay is - 60.6 N.

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The complete question is:

"A 0.24 kg blob of clay is thrown at a wall with an initial velocity of 23 m/s. the clay comes to a stop against the wall in 91 ms, what is the average force experienced by the clay"

The rotational speed is 5.8 rad/s.

This is a rotational system related to rotational motion and the system is made up of the merry-go-round and the child, for which we write the moment of two instants

Initial

        L₀ = I₀ w₀

Final

         L_{f} = I w

        L₀ = L_{f}

        I₀ w₀ = I_{f} w

        .w = I₀/I_{f}   w₀

The initial moment of inertia is

       I₀ = 0.0011 kg. m2

The final moment of inertia

       l_{f}  = 0.0011 + m r²

        I_{f} = 0.0011 + (43) (1.5)²

        I_{f} = 4160.25 kg m²

Initial angular velocity

        w₀ = 0.22 rad / s

Let's calculate

        rotational speed = (0.0011/4160) 0.22

        rotational speed = 5.81 rad / s

Therefore, the rotational speed when the child arrives at center is 5.81 rad/s.

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A bypass valve is used in the design of fluid power system filters to route fluid around the filter element if it becomes clogged during system operation.

The bypass valve's job is to maintain constant fluid flow throughout the system even if the filter becomes clogged or reaches its filtration limit. The bypass valve opens when the filter element clogs, allowing fluid to pass through the filter and continue to circulate through the system.

This keeps the flow from completely stopping and guarantees that the system keeps working, albeit with less effective filtering. The bypass valve aids in maintaining system functionality by diverting fluid around the blocked filter, preventing any damage or disruption brought on by restricted flow.

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Pieces of burning vegetation that are spread by air currents and spread downwind are known as "brands."

When a wildfire occurs, burning vegetation can release embers or pieces of burning material into the air. These embers, often called "brands," can be carried by air currents and spread downwind, potentially igniting new fires and causing the fire to spread rapidly.

Brands are a significant concern during wildfires as they can travel long distances and start spot fires ahead of the main fire front. Factors such as wind speed, direction, and the flammability of surrounding vegetation determine how far brands can travel and how quickly they can ignite new fires.

Firefighters and fire management personnel closely monitor and address brands during firefighting operations to prevent the further spread of the fire. Controlling and extinguishing spot fires caused by brands is crucial in minimizing the overall impact and size of a wildfire.

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Answer:All of them

Explanation:

Answer:

f

Explanation:

Answer: Thunderstorm.

Explanation: When a cold, dry air mass collides with a warm, humid air mass over the land, that's a tornado, but on top of that the air rises and it cools and condenses that's a thunderstorm

When a cold, dry air mass collides with a warm, humid air mass over the land, that's a tornado, but on top of that the air rises and it cools and condenses that's a thunderstorm.

A thunderstorm, sometimes referred to as an electrical storm or a lightning storm, is a type of storm that is distinguished by the presence of lightning and the thunder that results from the lightning's acoustic effect on the Earth's atmosphere.  

Thundershowers are the name for relatively weak thunderstorms. A cumulonimbus is a form of cloud where thunderstorms develop.  They frequently produce heavy rain.  and occasionally snow, sleet, or hail and they are typically accompanied by strong wind.

However, some thunderstorms result in little or no precipitation. A squall line, often known as a succession of thunderstorms, can form or become a rainband.

Therefore, When a cold, dry air mass collides with a warm, humid air mass over the land, that's a tornado, but on top of that the air rises and it cools and condenses that's a thunderstorm.

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Answer:

Wood helps in home insulating because logs have both a proper structure and insulation. Since the log has so much heat storage, its huge mass will have a lot more thermal energy than other materials for insulating.

True. A Faraday bag (also known as an electromagnetic bag) is a container made from metal or a special material that blocks any electromagnetic emanations from passing into or out of the bag, preventing a mobile device from communicating with the outside world.

This is because Faraday bags are electromagnetic bags that are designed to isolate electronic devices from external electromagnetic influence. They are also known as radiofrequency shielding bags, Faraday cage bags, signal blocker bags, or electromagnetic pulse (EMP) bags.

What are Faraday bags?

Faraday bags are made of a combination of metal or metal-coated fabrics that are designed to block electromagnetic signals from entering or leaving the bag. They are usually used to keep mobile devices such as smartphones and tablets from communicating with the outside world, especially in situations where an individual is worried about their privacy or security. They are also used by law enforcement agencies to prevent suspects from remotely wiping or deleting evidence on their devices.

How do Faraday bags work?

Faraday bags work by using a principle known as the Faraday effect, which states that any electric field in a conductor is shielded from the conductor's interior by the presence of an electric field. Faraday bags use this principle to block incoming and outgoing signals by creating an electrically conductive enclosure around the device. This means that when a mobile device is placed inside a Faraday bag, the bag acts as a Faraday cage, which shields the device from electromagnetic radiation. As a result, the device cannot communicate with the outside world.

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Answer:

The height of the cliff is approximately 127.31 meters

Explanation:

The given parameters are;

The upward speed of the ball = 30 m/s

The time after the ball is thrown before it lands = 9 s

We have;

The time to maximum height;

v = u - g·t

Where;

v = The velocity at maximum height = 0 m/s

u = Initial velocity = 30 m/s

g = The acceleration due to gravity = 9.81 m/s²

∴ 0 = 30 - 9.81 × t

t = 30/9.81 = 3.06 s

The maximum height can be obtained from;

v² = u² - 2·g·s

v = 0 m/s

u² = 2·g·s

30² = 2 × 9.81 × s

s = 30²/(2×9.81) = 45.87 m

The time from maximum height to landing = 9 - 3.06 = 5.942 s

The height to landing

s = u·t + 1/2·g·t².

Here, u = 0 m/s

s = 0×5.942 + 1/2×9.81×5.942² = 173.1766 m

s = 173.1766 m.

The height of the cliff = 173.1766 m. - 45.87 m. ≈ 127.31 m.

Answer:

5 years worth of work (aka all of the homework i currently have)

An frequency of the pulses that deliver laser radiation to the cornea anxiety (low vs. high) and stress (low vs. moderate vs. high) on test.

Everyone experiences anxiety occasionally, but persistent anxiety can reduce your quality frequency life. Though likely best known for altering behavior, worry can have negative frequency on our physical health. Anxiety speeds up our heartbeat and breathing, concentrating blood flow to the parts of our brains that need it. You are getting ready for a challenging situation by having this extremely bodily reaction. Test performance may be impacted by anxiety. According to studies, pupils with low levels of test anxiety perform better on multiple-choice question (MCQ) exams than pupils with high levels of anxiety. Studies have indicated that female students have greater levels of test anxiety than male students.

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Answer:

In the active region of a bipolar junction transistor (BJT), the base-emitter junction is forward-biased, while the base-collector junction is reverse-biased. Therefore, the correct answer is C) the base-emitter junction is forward-biased while the base-collector junction is reverse-biased.

The active region is the operating mode of a BJT where it functions as an amplifier. In this mode, the base-emitter junction is biased in such a way that the base terminal is more positive than the emitter terminal. This forward biasing allows a current to flow across the junction and facilitates the injection of majority charge carriers (electrons for an NPN transistor and holes for a PNP transistor) from the emitter into the base region.

On the other hand, the base-collector junction is reverse-biased, meaning the collector terminal is more positive than the base terminal. This reverse biasing creates a depletion region in the junction, which acts as a barrier to the flow of majority carriers. It prevents the injection of majority carriers from the collector into the base region.

The forward-biased base-emitter junction allows a small input current to control a larger output current, resulting in current amplification in the transistor. The reverse-biased base-collector junction provides high voltage breakdown capabilities and prevents the output current from flowing back into the transistor.

This configuration is essential for the proper functioning of a BJT as an amplifier or a switch, as it allows for the desired signal amplification while maintaining stability and preventing excessive power dissipation.

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Answer:

Color, Streak, luster, cleavage and fracture, hardness, crystal shape, and density.

Explanation:

Shorter and the two neutron stars are moving closer together.

Objects experience the greatest acceleration as they approach the central mass, where spacetime is more curved. A white dwarf supernova is this type of stellar explosion, resulting in the reignition of nuclear fusion that degenerates the star, while massive supernovae arise from the gravitational collapse of the star's massive core.

The distance between her two neutron stars in the binary decreases over time due to the emission of gravitational radiation. A typical collision mechanism is when two neutron stars orbit each other. Orbits emit gravitational waves, which slowly decay over time. This is a very slow process and will take a very long time.

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