11. Discuss the Joule-Thomson Experiment 12. Work energy depends on the Path. Please discuss this in your own understanding and give example.

Answer:

Explanation:

Time taken by jogger to travel the distance to finishing line = 2.1 / 7.3

= .28767 hr

Bird will keep flying for this time period

distance covered by bird = speed x time

= 29.2 x .28767 km

= 8.4 km .

  The centre of mass of the system is the point at which the total

  mass of system could be concentrated without changing the moment

  of the system.

Centre of Mass is the point at which the whole mass of the system

is assumed to be concentrated.

 The general formula for the COM is:

              xₙ =  Σmₐxₐ / Σmₐ         where,  a = 1,2,3.........n

  Here the term Σ mₐ xₐ is called the first moment of the system and the

  denominator expression is called total mass of the system.

    Therefore, from this theory we can say that the moment of the system

    remain unchanged while calculating the COM.

  Hence, The centre of mass of the system is the point at which the total

  mass of system could be concentrated without changing the moment

  of the system.

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The generator power will be 59 kW. Power drop is the main factor for finding the generated power.

The maximum power input allowed to pass through a piece of equipment is known as the equipment's power rating.

Power drop = 5%

The relation of the frequency change with the power drop is;

\(\rm \frac{df}{dp} =5\%\\\\ \frac{f_{rated-f_1}}{P_{rated}-P_1}=0.05\\\\ \frac{f_{rated-60}}{100-61}=0.05\\\\ f_{rated}=61.95\)

For the grid frequency, 59.9 Hz

\(\rm \frac{f_{rated-f_2}}{P_{rated}-P_2}=0.05\)

\(\rm \frac{61.95-f_2}}{100-P_2} =0.05\\\\ 100-P_2 =20(61.95-59.9)\\\\P_2=100-41 \\\\ P_2=59 \ kW\)

Hence, the generator power will be 59 kW.

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Answer:

a

Explanation:

just did it on a p e x

Aluminum oxide consists of one aluminum ion (Al3+) and two oxygen ions (O2-) chemically bonded together to form the compound Al2O3. The correct option is A.

A chemical bond is a force of attraction that holds two or more atoms together in a molecule or compound. Atoms can bond together by sharing or exchanging electrons in their outermost energy levels, which is also known as the valence shell.

There are three main types of chemical bonds:

Covalent bond: This bond occurs when two or more atoms share electrons in their outermost energy level. Covalent bonds are strong and are commonly found in molecules of compounds like water (H2O) and methane (CH4).

Ionic bond: This bond occurs when one atom donates one or more electrons to another atom, forming oppositely charged ions that are then attracted to each other. Ionic bonds are strong and are commonly found in compounds like table salt (NaCl) and calcium chloride (CaCl2).

Metallic bond: This bond occurs between atoms of metallic elements, where their outer electrons are delocalized and shared among all the atoms in the metallic structure. Metallic bonds are strong and are responsible for the properties of metals like malleability and conductivity.

Chemical bonds are essential for the formation of molecules and compounds that make up all matter in the universe. Understanding chemical bonds is crucial for fields such as chemistry, biology, and materials science.

Here in the Question,

Option B, "A12+ and O3-", is not true because aluminum ions, in their stable state, lose three electrons to form a +3 ion, not a +2 ion.

Option C, "A13- and O2+", is not true because aluminum ions, in their stable state, lose three electrons to form a +3 ion, not a -3 ion.

Option D, "A12- and O3+", is not true because oxygen ions, in their stable state, gain two electrons to form a -2 ion, not a +3 ion.

Therefore, option A, "Al3+ and O2-", is the correct answer as aluminum oxide consists of one aluminum ion with a charge of +3 and two oxygen ions, each with a charge of -2, that bond together to form the compound Al2O3.

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Answer:

The Light was reflected, b.

Explanation:

If the flashlight was pointed at the mirror, it was reflected because it did not stop on the mirror or go through the mirror or reflect in different ways.

Answer:Sure, here are some potential topic questions related to Fitzgerald's view of the American Dream in The Great Gatsby:

1. How does Fitzgerald portray the American Dream through the character of Jay Gatsby? What does Gatsby's pursuit of wealth and status say about the values of the time?

2. What commentary does Fitzgerald offer on the idea of the "self-made man" in The Great Gatsby? How do characters like Gatsby and Tom Buchanan embody different versions of this ideal?

3. What role does social class play in the novel, and how does it relate to the American Dream? How does Fitzgerald challenge the idea that hard work and determination are the only factors that determine one's success in life?

4. How does the theme of disillusionment relate to Fitzgerald's view of the American Dream in the novel? What does the ending of the book suggest about the viability of this dream in the 1920s?

To answer these questions, you could analyze specific passages from the novel, consider the historical context in which it was written, and examine the characters' motivations and actions throughout the story. You could also explore how the novel reflects broader themes and trends in American society during the time period.

Explanation:

The variations get passed on from one generation of tree snails to the next from both parents to offspring and through the environment (Option C is correct).

The expression of genetic variation refers to differences in the nucleotide sequences between individuals of the same special which are passed across generations from parents to offspring and are selected by natural selection.

In conclusion, the variations get passed on from one generation of tree snails to the next from both parents to offspring and through the environment (Option C is correct).

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Answer:

So it's clear that Earth's hot iron core isn't what creates the magnetic field around our planet. ... On Earth, flowing of liquid metal in the outer core of the planet generates electric currents. The rotation of Earth on its axis causes these electric currents to form a magnetic field which extends around the planet

Explanation:

The period of rotation of the wheel is 0.6127 seconds.

The tangential speed of a point on the wheel's outer edge is 2.5624 m/s.

    To calculate the period of rotation T, we need to convert the frequency from revolutions per minute (rev/min) to revolutions per second (rev/s).

Given:

The radius of the wheel (r) = 0.25 m

Frequency of rotation (f) = 98 rev/min

First, let's convert the frequency to rev/s:

Frequency in rev/s = Frequency in rev/min / 60

f' = 98 rev/min / 60 = 1.6333 rev/s (rounded to four decimal places)

Now, we can calculate the period of rotation T:

T = 1 / f'

T = 1 / 1.6333 rev/s  = 0.6127 s (rounded to four decimal places)

The period of rotation (T) of the wheel is approximately 0.6127 seconds.

          To calculate the tangential speed of a point on the wheel's outer edge, we can use the formula:

Tangential speed = \(\frac{2\pi r}{T}\), where T is the time period

Substituting the given values:

Tangential speed = 2 * \(\pi\) * (0.25 m) / 0.6127 s

Tangential speed = 2 * 3.14 * 0.25  / 0.6127 s = 2.5624 m/s (rounded to four decimal places)

The tangential speed is 2.5624 m/s.

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Answer:

A person must be "voluntary".

Explanation:

The research project has so far been implementing this very same factual information on either the basis of results for such an induced conformational.

The maximum current if this inductor is connected to a 50.0 hertz source that produces a 105 v rms voltage is 3.87A

X= ωl

where,

X is inductive reactance

ω is thee angular  frequency

L is the inductance

therefore,

46= 2π60.L                   eq-1

and

X° is inductive reactance when 50 hz source is used

X°=2π50.L                    eq-2

dividing eq 2 by eq 1 we get

X°=38.33 Ω

maximum current (I°) = maximum voltage divided by  inductive reactance

I°=√2Vrms/38.33

I°=3.87A

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Answer:

Gravity and Air resistance.

Explanation:

A projectile is an object that is launched into the air by the application of an external force and they are able to move freely under the influence of gravity and air resistance.

Therefore,

The 2 forces acting on a projectile are:

Gravity and Air resistance.

Answer:

Sun, fireflies, glow worms ,Stars ,a lighter torch ,a kerosene Oil Lamp, burning candle, vapor light, a bulb

Answer:

Sun

Flame in an oil lamp

tube light

bulb

fireflies

lighted candle

LEDs

laser

jellyfish

Fire

Explanation:

luminous objects are objects that produce light and are responsible for vision.

Answer:

I=0.3 A

R=25 Ohm

V=?

V=IR

0.3X25=7.5

Answer:

7.5 V

Explanation:

current × resistance = voltage

When the steel marble falls on the wooden floor, it takes most of the impact energy to the ground due to the material difference and causes a large part of the recoil energy.

Wooden floors are harder and more rigid than steel marbles. When the marble hits the floor, the floor absorbs most of the kinetic energy of the marble due to its hardness. This is because the floor resists deformation and does not allow the marble to get in or get stuck.

Also, wooden floors are generally heavier than steel marbles and can withstand impact.

The ground has little impact or deformation and transfers most of the energy back to the marble as recoil energy.

Steel balls are small and heavy. It is less resistant to deformation than flooring. As a result, it is more flexible and absorbs less energy during impact. Therefore, most of the impact energy is transferred to the floor and most of this energy is returned to the marble.

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Answer: I believe it’s location D. Or whichever is the location of slow crystallization.

Explanation: Slow crystallization of magma forms granite. Hope this helps. :)

Answer:

D

Explanation:

Answer: The answer is B.

Explanation: Trust me, i'm right.

Answer: A. Reference point

Explanation: A reference point is usually the start of a location, and if it's a starting point, then it will be 0.

Have a nice day. :)

1. The first formula for average velocity is v = (x2 - x1)/(t2 - t1), where v is the average velocity, x1 and x2 are the initial and final positions, and t1 and t2 are the initial and final times. This formula is used when the motion of an object is known to be in a straight line.

Average velocity is the average rate of change of an object's position over a period of time. It is calculated by dividing the total displacement by the total time taken during the displacement. Average velocity is the result of an object's motion and is the overall velocity of the object. Average velocity is a vector quantity, meaning it has both magnitude and direction. Average velocity can be calculated for any type of motion, including linear, circular, and projectile motion. Average velocity is different from instantaneous velocity, which is the velocity of an object at a specific point in time.

2. The second formula for average velocity is v = Δs/Δt, where v is the average velocity, Δs is the total displacement (the difference between the initial and final positions), and Δt is the total time. This formula is used when the motion of an object is not known to be in a straight line.

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Answer:

True

Explanation:

The Gravitational potential energy is given by:

G = mgh

m = mass of body ; g = acceleration due to gravity ; h = height

G for a ball of mass 10kg ; height of 20 meters above the ground

G = 10kg * 9.8m/s² * 20m = 1960 kgm²/s²

G for a ball of mass 1000kg at height, 0 meters :

G = 1000 * 9.8 * 0 = 0

1960 > 0

Hence, Gravitational potential energy for 10kg ball at height 20m is greater Thammfor a 1000kg ball on the ground.

Answer:

  a = -1,33 m / s²

Explanation:

This problem is kinematic in one dimension, let's use the equations

         v = v₀ + a t

         v₀ = v - at

          x = v₀ t + ½ a t²

we substitute the first in the second equation

         x = (v-at) t + ½ a t²

         x -v t = a t² (1 + ½)

         a = (x -vt) / t² (1.5)

we calculate

         a = (100 - 30 10) / 10² (1.5) =-200 / 150

         a = -1,33 m / s²

Normal force: 33.95 N

Frictional Force: 19.6 N

Coefficient of Friction: 0.57732

Explanation:

Fn : Normal Force

Data:

Mass : m = 4 kg = 4 000 g

Angle : 30

Normal force:

Frictional force & Coefficient of Friction:

Since the box is

Answer:

To calculate the pressure exerted by water at the bottom of the tank, we need to use the formula:

Pressure = Density x Gravity x Height

where:

Density = 1000 kg/m³ (density of water)

Gravity = 9.81 m/s² (acceleration due to gravity)

Height = 12 m (height of the tank)

Substituting the values in the formula, we get:

Pressure = 1000 kg/m³ x 9.81 m/s² x 12 m

Pressure = 117,720 Pa (Pascals)

For a given initial velocity v0, and a given launch angle θ0, the ratio of the range of an ideal projectile on the Moon to the range of the same projectile on Earth, RMoon/REarth, will be approximately 6. Hence option (B) is the answer.

When the gravitational force is first exerted on an item, its initial velocity indicates how quickly it moves. The final velocity, on the other hand, is a vector number that gauges the speed and direction of a moving object after it has experienced its maximum acceleration.

The initial velocity is the velocity at time t = 0, and it is represented by the sign u. A motion's starting speed is referred to as this. Four initial velocity formulas are available. When given time, acceleration, and ultimate velocity, the starting velocity is expressed as u = v - at. An equation for initial velocity can be expressed in terms of meters per second.

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The repeated flying into the air and landing on the same spot reinforces to the woodcock that this is the center of its territory.

The phrase "Woodcock sky dances" refers to the woodcock's breeding routine. It is a migratory bird that mates in the United States' Eastern and Central regions. Woodcock "sky dances" or courtship flights, which are a part of its breeding ritual, are familiar to ornithologists and bird lovers.The male woodcock prepares for the display by choosing a place and then creating a tiny opening in the trees or shrubs. It flies into the air at sunset or sunrise, calling out with a distinctive chirping sound. It then lands on the same spot, with each flight being more extensive than the last. The woodcock does this repeatedly, with each flight reaching a greater height than the previous one.

The woodcock's territory is at the center of its sky dancing. The repeated flying into the air and landing on the same spot reinforces to the woodcock that this is the center of its territory. During the breeding season, the woodcock's sky dancing activity is essential. It shows off the male's strength and agility to female woodcocks, which aids in their selection of mates.The woodcock's behavior is a result of natural selection. Through sky dancing, the woodcock's species has developed its breeding ritual over thousands of years. The ability to perform sky dances is an evolutionary benefit to the woodcock, as it aids in species reproduction and survival. Therefore, repeatedly flying into the air and landing on the same spot reinforces to the woodcock that this is the center of its territory.

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