Pranam
(for those who do not read at all)
Great to know that all readers here have neither maths or science
knowledge after 70 years in spite of their achievements in their careers,
Mr G remarks. Q is on magnetic force, energy and field which is well
described in B G itself as kshetra shetragna etc. The institute teacher had
also given the finding that ENERGY AND FORCE ARE ONE AND THE SAME!!.
Newton’s second law
<https://www.britannica.com/science/law-of-force> is a quantitative
description of the changes that a force
<https://www.britannica.com/science/force-physics> can produce on the motion
<https://www.britannica.com/science/motion-mechanics> of a body. It states
that the time rate of change of the momentum
<https://www.britannica.com/science/momentum> of a body is equal in both
magnitude and direction to the force imposed on it. The momentum of a body
is equal to the product of its mass and its velocity. Momentum, like
velocity <https://www.britannica.com/science/velocity>, is a vector
<https://www.britannica.com/science/vector-physics> quantity, having both
magnitude and direction. A force applied to a body can change the magnitude
of the momentum or its direction or both. Newton’s second law is one of the
most important in all of physics
<https://www.britannica.com/science/physics-science>. For a body whose mass
*m* is constant, it can be written in the form *F* = *ma*, where *F* (force)
and *a* (acceleration <https://www.britannica.com/science/acceleration>)
are both vector quantities. If a body has a net force acting on it, it is
accelerated in accordance with the equation. Conversely, if a body is not
accelerated, there is no net force acting on it. (KINETIC ENERGY BECAUSE
OF KINETIC FORCE).
Newton’s third law
<https://www.britannica.com/science/law-of-action-and-reaction> states that
when two bodies interact, they apply forces to one another that are equal
in magnitude and opposite in direction. The third law is also known as the
law of action and reaction. This law is important in analyzing
problems of static
equilibrium <https://www.britannica.com/science/equilibrium-physics>, where
all forces are balanced, but it also applies to bodies in uniform or
accelerated motion. The forces it describes are real ones, not mere
bookkeeping devices. For example, a book resting on a table applies a
downward force equal to its weight on the table. According to the third
law, the table applies an equal and opposite force to the book. This force
occurs because the weight of the book causes the table to deform slightly
so that it pushes back on the book like a coiled spring.
If a body has a net force acting on it, it undergoes accelerated motion in
accordance with the second law. If there is no net force acting on a body,
either because there are no forces at all or because all forces are
precisely balanced by contrary forces, the body does not accelerate and may
be said to be in equilibrium
<https://www.merriam-webster.com/dictionary/equilibrium>. Conversely, a
body that is observed not to be accelerated may be deduced to have no net
force acting on it. (PORTENTIAL ENERGY BECAUSE OF THE POTENTIAL
FORCE).{GENERAL RELATIVITY}
In physical theories prior to that of special relativity, mass and
energy were viewed as distinct entities. Furthermore, the energy of a body
at rest could be assigned an arbitrary value. In special relativity,
however, the energy of a body at rest is determined to be *mc*2. Thus, each
body of rest mass *m* possesses *mc*2 of “rest energy,” which potentially
is available for conversion to other forms of energy. The mass-energy
relation, moreover, implies that, if energy is released from the body as a
result of such a conversion, then the rest mass of the body will decrease.
Such a conversion of rest energy to other forms of energy occurs in
ordinary chemical reactions
<https://www.britannica.com/science/chemical-reaction>, but much larger
conversions occur in nuclear reactions
<https://www.britannica.com/science/nuclear-reaction>. This is particularly
true in the case of nuclear fusion
<https://www.britannica.com/science/nuclear-fusion> reactions that
transform hydrogen <https://www.britannica.com/science/hydrogen> to helium
<https://www.britannica.com/science/helium-chemical-element>, in which 0.7
percent of the original rest energy of the hydrogen is converted to other
forms of energy. Stars <https://www.britannica.com/science/star-astronomy> like
the Sun <https://www.britannica.com/place/Sun> shine from the energy
released from the rest energy of hydrogen atoms that are fused to form
helium. {SPECIAL RELATIVITY WHERE NEWTON THEORY WAS PROVED CONDITIONAL AND
NOT UNIVERSAL}.
Rewriting energy Equation and Force equation of Einstein and Newton
as
1 E=Mc2
2 Total Energy of a Particle and solving for mass *m* gives
M=E/C2.
3 whereas force Equation F= MA
4 Constant Force in Energy Frame when solved for mass *m* gives
M= F/A
5 and force Equation F=MA, Relative Force in Stationary Frame
when solved for mass m gives M=F/A
6 where in each case the masses are assumed to be the same. {viz
newton and Einstein symbol M is assumed to be the same while the difference
between does happen while set in motion in different space and time).
Equating the right sides of Equations (2) and (5) then gives
E/C2 = F/A .
7 that when solved for F is as, given in cross multiplication as
F = A*E/ C2 and E = F*C2/A Relationship of E to F*, where
F is not equal to E, depending on the speed, space, time, and mass,
*where F is
the force acting on a particle with a total energy E, which vary unless the
mass is the same.
Now what is Magnet6ic field? Akarshna is the Sanskrit word
found in Rig Veda. Magnetic field is only a causation and temporary and
also the poles are interchangeable subject to certain conditions, Earth
magnetic poles gets inverted once in 26000 years ; and the story of
Viswamira, where Trisanku as the south pole is the inversion theory
science explained as Purana story. TriSanku and Druva ,the south and north
pole tilt its axis and changes completely as south becomes North and the
North becomes the south. Rishi scientists found it without any telescopes
long ago.
Hence magnetisation is only a causation effect. It all
depends on the earth magnetic field caused by the forces evolved out of the
energies, from potential to the kinetic. Big Bang stated that explosion and
travelling and the expansions etc.
Rig Veda Nasadiya suktam 10000 year as back said the F and E
potential and kinetic as RV 10.129.3
तम आसीमसा गूहळमग्रे प्रकेतं सिललं सवाऽइदम् ।
तुच्ेनािपिहतं यदासीपसिहनाजायतैकम् ॥३॥
tama āsīt tamasā gūl̥ham agre 'praketaṁ salilaṁ sarvam ā idam |
tucchyenābhv apihitaṁ yad āsīt tapasas tan mahinājāyataikam || 3 ||
At first there was only darkness wrapped in darkness.
All this was only unillumined water. That One which came to be, enclosed
in nothing,arose at last, born of the power of heat.
That means the mass at rest has the potential energy stored in.
Magnetisation is only a consequence of energy emanating from the relevant
mass where the Mass and Energy are totally different. KR IRS 281021
On Thu, 28 Oct 2021 at 05:07, 'gopala krishnan' via iyer123 <
[email protected]> wrote:
> *CULTURAL QA 10 -2021-28*
>
> *Being compilation there may be errors*
>
> *Q1 Where do magnets get their energy to repel other magnets
> from? Does it last forever?*
>
> *A1 Mark John Fernee 20+ years as a physicist Updated Oct 18*
>
> *My note- Lengthy answer. Science nd Maths knowledge is required*
>
> *That’s a tricky concept (well actually quite simple if you know enough
> physics) and most likely responsible for a great deal of magnet mysticism.
> It seems that many people think of magnets as somehow magic. *
>
> *This most likely stems from the fact that when you bring magnets
> together, you can actually feel a force. Furthermore, this force acts over
> a distance without any contact. In our everyday experience, this is rather
> unusual, and so intuition can lead us to wrong conclusions.*
>
> *So let’s look at how physics describes this situation.*
>
> *The standard high school textbook definition of work is W=F⃗ ⋅s⃗ *
>
> *. Work, which is energy corresponds to a force acting over a distance.
> However, the work and the force are very different. In particular, if a
> force doesn’t act over a distance, there is no energy expended. This is
> good, because it means that bridges can remain intact without a power
> supply, because they are under constant stress (which is just a form of
> force). That stress is ultimately due to gravity, but as long as all the
> forces are balanced, a structure can be maintained.*
>
> *Possibly, another cause for confusion is that muscles do require energy
> to remain flexed. That seems to indicate that energy and force are somehow
> similar. However, that’s due to how muscle contraction actually works.
> Muscles in their contracted form require a supply chemicals to remain in
> that state. This state of the human physiology can feed our intuition about
> forces and energy. Therefore, I think the best counter example is to think
> about bridges. Nothing supplies them with energy to remain standing.*
>
> *Magnets just happen to demonstrate an important concept in physics, and
> that is potential energy, or a potential field. Moreover, a force is
> related to the spatial change in potential energy. That means if the
> potential changes from point A to point B, there will be a force. Just
> think of a hill. The gravitational potential changes as you go up or down
> the hill. Therefore, there will be a force pointed down the hill.
> Mathematically, this can be written as, F⃗ =−∇ϕ(x,y,z)*
>
> *. This gradient operator just calculates the slope of the scalar
> potential, which is a vector quantity. *
>
> *This is the physics you need to know to understand magnets. The magnetic
> field of the magnet is the magnetic potential. For two magnets, they both
> have fields, which will combine into a single effective field. *
>
> *These fields do not need any batteries to maintain. They are based on the
> collective angular momentum of the electrons in the material. Angular
> momentum is conserved and doesn’t need to be maintained. *
>
> *However, for two magnets, if they are far apart, their individual fields
> are effectively zero at the location of the other magnet. So the other
> magnet exists in a relatively uniform flat potential. Therefore, there is
> no force between them. But we can bring them together. When we do that, the
> potential changes from uniform and flat to something that changes in space.
> This is when we feel a force between the magnets. If we continue bringing
> them together, the force increases. Notice, what’s happening here. We are
> bringing them together. We feel the force, but keep moving the magnets.
> Therefore, we are providing the energy via our definition of work.
> Furthermore, the orientation of the magnets determines whether the force is
> repulsive or attractive. *
>
> *strong magnets, maintaining a repulsive force becomes difficult as they
> are brought closer. Any slight mis-orientation will result in a torque that
> will act to flip the magnets over, which will change the sign of the
> potential from positive to negative. *
>
> *A negative potential is like falling down a hole, you want to be at the
> bottom of it, and it is difficult to climb out. When the magnets are
> sticking to each other, that’s as deep as you can go down the well.*
>
> *Describing the process of a magnet flipping and joining together is
> beyond the scope of this answer. *
>
> *In essence all the energy that you have input into bringing the magnets
> together is converted to the violence of the flip and collision of the
> magnets and is dissipated. *
>
> *Now they are stuck and it will take energy to pull them apart again.*
>
> *In short, it’s the act of moving magnets that takes energy. Maintaining a
> force need not take any energy, as demonstrated by a bridge. Furthermore,
> the field of a magnet is a manifestation of the combined angular momenta of
> the constituent electrons. As these angular momenta come from quantum
> states (usually in their lowest energy configuration), they cannot be lost,
> and so are maintained indefinitely. That’s why you can’t directly extract
> energy from magnets. They are not batteries.*
>
> *Magnets are most useful in electric motors because they can maintain a
> constant magnetic field, which provides a potential that can be used by the
> motor to generate work. *
>
> *The electric part of the motor creates electromagnets, which interact
> with the field of the permanent magnets. However, the field of the
> electromagnets can be controllably flipped, such that the orientation of
> the magnets can be made to continuously flip, which is what powers the
> rotating motion.*
>
> *My note- In the earth we get iron ore. In iron the ions are arranged in a
> linear manner creating nature magnetism. Magnets if hanged maintain North
> South direction. Magnets attract other magnetic material. Hence in the pin
> box pins are hold due to the magnetism of a small magnet inside. *
>
> *Q2 Do people feel satisfied after becoming an IAS officer?*
>
> *A2 Penguin India Publishing your favourite books since 19871h*
>
> *Those desirous of joining the service must have dreams of creating a
> better society that is well-governed and where the needs and the
> expectations of every ordinary citizen are fulfilled. *
>
> *This should be the lifelong endeavour of an IAS officer. No job in the
> world can give you the variety that the IAS provides. *
>
> *You run districts, head diverse departments like health, agriculture,
> education, etc. Everywhere, your approach and initiatives set the tone for
> the department. You are always in a leadership position and can be
> transformational. It is this variety, diversity and job satisfaction one
> must want if he or she desires to join the IAS.*
>
> *Alok Ranjan, the former Chief Secretary of the Government of Uttar
> Pradesh, brings together sections full of information that every aspiring
> officer should know. While sharing his own experiences, he provides a deep
> understanding of the IAS as an institution, valuable tips and insight for
> cracking the daunting UPSC exam, the best resources to prepare for it, how
> to ace the interview, and how to build a successful career in the services.
> Consider this book as your first step towards the power and prestige that
> comes with serving the nation as an IAS officer.*
>
> *Making a Difference: The IAS as a Career*
>
> *Q3 Why aren’t raisins just called dried grapes?*
>
> *A3 Lucia Garcia Worked at Hospitals Sun*
>
> *"Raisin" generally refers to grapes in old French, and English borrows
> the word from French.*
>
> *In many years of international trade, people are used to calling dried
> grapes "raisins".*
>
> *Raisins are fresh grapes that have been sun-dried and shade-dried, which
> can be made from a wide variety of grape types.*
>
> *The shelf life of raisins is very long, about 18 months. Raisins have low
> water content and are easy to transport and store. *
>
> *Raisins are a typical high-energy nutrient.*
>
> *Raisins contain very high sugar content. 100 grams of raisins contain
> about 60 grams of sugar, most of which are glucose.*
>
> *Glucose is easier to absorb and use by the body than any sugar, and can
> directly replenish energy for the body and quickly relieve fatigue. *
>
> *At the same time, raisins are high-calorie foods, 100 grams of raisins
> contain about 340 calories. *
>
> *Although raisins are very nutritious, eating too many raisins can easily
> lead to obesity.*
>
> *It is recommended to eat 2 tsp of raisins per day.*
>
> *Q4 Why does Bengaluru look richer than Chennai?*
>
> *A4 Anonymous Oct 21*
>
> *Because Bangalore has sizeable amount of North Indians and they are
> famous in showing off and copying fashion trends faster, Whether money is
> there or not they like to show off. That does not mean they are richer.*
>
> *In South you can easily notice a rich person wearing Normal slippers and
> walks away with simple cloth. Nearby you can also notice a less rich person
> walking with Ray Ban glasses which he bought on sale and a girl walking
> with mini skirt and a golden handbag. And because of this mix of population
> Kannadigas also like to become trendy and have good dressing skills.*
>
> *But Chennai is bit lacking in showing it off and it’s dressing skills.
> And more over for Chennai’s humidity we can’t wear beautiful pull overs as
> like in Bangalore.*
>
> *All that glitters are not gold!*
>
> *Q5 My fasting blood sugar is 79 and HBA1C is 6.8. I am 40 yrs
> of age. My height is 5,11 and weight is 73kg. Looking at HBA1C, I have
> already started diet control and regular exercise. Shall I take diabetic
> medicine also or this is sufficient?*
>
> *A5 Diabetes ManagementAnswered byVK RaoFri*
>
> *When I was around 55 my fasting sugar was above 120 and my hba1c was
> above 6.5. from then I started walking and started controlling my diet.*
>
> * Till now (7 years over ) I have not taken medicines. *
>
> *My fasting sugar ranges between 92 to 120 ( finger prick method). In 2019
> my hba1c was below 6. *
>
> *My diet modification and walking helped me so far.*
>
> * My doctor has not suggested any medicines for sugar. Hence you may talk
> to you doctor and follow his suggestion without worrying much. But frequent
> sugar testing will help you a lot in following suitable diet. I am not a
> doctor and I have given my experience only.*
>
> *My note- For few food control can reduce high blood sugar. I read a lot
> of item in whatsapp about food control and diabetics.*
>
> *One week back I just started to vegetable less boiled and salads and
> fruits. Very little wheat rice or rice. Though taking insulin, I found
> blood sugar levels have made good reduction.*
>
> *Q5 What happens when you eat an apple every day for a month?*
>
> *A5 Lucia Garcia Worked at HospitalsOct 22*
>
> *Apple is a popular fruit with extremely rich nutritional value and is
> known as the "King of Fruits".*
>
> *Apple's nutrition is comprehensive and balanced, and eating apples can
> supplement most of the nutrients the body needs.*
>
> *Apple contains a biologically active substance: apple polyphenols. Apple
> polyphenols are a natural antioxidant that can effectively remove harmful
> free radicals, protect cells, and delay the aging process of cells.*
>
> *Regular consumption of apples is very beneficial to the health of cells.
> With healthy cells, muscles and skin will become more elastic and
> resilient, wrinkles will be reduced, and you will look younger.*
>
> *It is worth mentioning that rinse the apple with water and eat apple with
> the skin.*
>
> *Apple skin contains ursolic acid. Ursolic acid is a kind of triterpene
> compound, which has obvious antioxidant function, and has good anti-aging
> and anti-oxidant effects on the skin.*
>
> *As the saying goes, eating an apple a day can make you look ten years
> younger*
>
> *Q6 What happened to the vanaras post Ramayana?*
>
> *A6 Bhanu Kiran Admires the stories of Ramayana Sun*
>
> *According to Uttara kanda of Ramayan, Rama ordered Hanuman to stay on
> earth as long as people take the name of Rama.*
>
> *After this, Kakutstha spoke to Hanumat. ‘You have already made up your
> mind to remain alive. Do not make that pledge of yours come false. O lord
> of the apes! As long as my account is spoken about in the world, till then,
> remain alive and follow your pledge.’ Kakutstha Raghava then told all the
> apes and bears, ‘Come with me.’*
>
> *Source: Valmiki Ramayan CE Chapter 7(98) *
>
> *2. Sugreeva put Angada in-charge of Kishkinda and went to Ayodhya along
> with few other Vanaras to join Rama who was departing the Earth.*
>
> *3. Angada, Nal and Nil stayed back at Kishkinda and must have ruled the
> kingdom for some period.*
>
> *4. Jamabavan got settled in a cave and met Krishna in Dwaparayuga and
> gave his daughter Jambavati and Syamantaka Jewel to Krishna. This story is
> described in Srimad Bhagavatam.*
>
> *Thus addressed, Jāmbavān happily honored Lord Kṛṣṇa by offering Him his
> maiden daughter, Jāmbavatī, together with the jewel.*
>
> *Source: Srimad Bhagavata Canto 10 Chapter 56*
>
> *5. Hanuman has a cameo appearance in Mahabharat. He blocked the path of
> Bhima when Bhima went to fetch flowers from Gandhamadana mountains. Before
> leaving, Hanuman blessed Pandavas for victory in the war.*
>
> *And thinking that he (Bhima) should not pass that way,(Hanuman) lay
> across the narrow path, beautified by plantain trees, obstructing it for
> the sake of the safety of Bhima. With the object that Bhima might not come
> by curse or defeat, by entering into the plantain wood, the ape Hanuman of
> huge body lay down amidst the plantain trees, being overcome with
> drowsiness.*
>
> *Source: Mahabharat Vana Parva: Tirtha-yatra Parva: Section CXLV*
>
> *6. During Yudhisthira’s Rajasuya sacrifice, Sahadeva went in southern
> direction and fought with the Vanaras settled in Kishindha kingdom for
> seven days. The Vanaras were gratified with Sahadeva and gave tributes.*
>
> *The long-armed hero having vanquished that monarch marched further to the
> south. And then he beheld the celebrated caves of Kishkindhya and in that
> region fought for seven days with the monkey-kings Mainda and Dwivida.
> Those illustrious kings however, without being tired an the encounter, were
> gratified with Sahadeva. And joyfully addressing the Kuru prince, they
> said,--'O tiger among the sons of Pandu, go hence, taking with the tribute
> from us all. Let the mission of the king Yudhishthira the just possessed of
> great intelligence, be accomplished without hindrance. *
>
> *Source: Mahabharat Sabha Parva: Jarasandhta-badha Parva: Section XXX*
>
> *7. A Vanara by the name of Dvivida was killed by Balarama in Dwaparayuga.*
>
> *The valiant one was Mainda’s brother and was Sugriva’s adviser. As an act
> of vengeance for his friend, the ape created havoc in the kingdom. He set
> cities, villages, mines and cowherd settlements on fire by igniting flames.
> On one occasion, he uprooted a mountain and pulverized all the regions,
> especially of Anarta. That is where Hari, his friend’s killer, dwelt.*
>
> *The lord of the apes now clenched his arms, which were like palm trees,
> into fists. He approached Rohini’s son and struck him on the chest with
> these. The Indra among the Yadavas flung aside his club and his plough. He
> angrily struck him on the collarbone with his two hands. He started to
> vomit blood and fell down.*
>
> *Source: Bhagavata Purana Chapter 10(67)*
>
> *8. Temple of Hathor at Dendera, built around 2250 BC has carvings of
> Vanaras. In Kishkinda Parva of Ramayan, Sugreeva ordered all subraces of
> Vanaras from all over the world to assemble in his capital. Few of the
> Vanaras must have arrived from modern day Egypt too. They might have
> settled there after the war and continued their race.*
>
> *Q7 Is it safe to place stainless steel containers in a
> refrigerator?*
>
> *A7 2 Answers N.Sunil Kumar , Associate Professor, Humanities &
> Sciences (Biol) at Methodist College of Engineering and Technology
> (2019-pr…Answered Apr 3, 2019*
>
> *Stainless steel as storage container in refrigerator will not be a
> problem as long as the material is thin and light to play the role of
> storage container. Being a metal it is a good conductor of heat and keeping
> thickness thin increases efficiency of heat loss from the food to container
> to surrounding air. *
>
> *Thick steel will take time to cool then create a gradient with food hence
> takes longer to chill. The fact to bear in mind is, more the thickness of
> food material the poorer the cooling of core (which is where the bugs
> thrive) hence liquid or large vessels are not recommended, unless you mix
> content after 6 hours for uniform cooling. Acidic foods are to avoided if
> storing for long period as steel has more Chromium than normal for that
> sparkling sheen, it dulls .*
>
> *2ND ANSWER- Annamalai Ram, former Chief Mechanical Engineer , Engg
> ConsultantAnswered Apr 2, 2019*
>
> *Stainless steel metals are most favoured by food and beverage industries.
> It does not stain, while inside or outside the refrigerator. Stainless
> steel is the metal used for most of the surgical instruments and duplicated
> bodies embedded inside the human body .*
>
> *I think, stainless steel is biologically, safe and no problem in using
> inside refrigerator.*
>
> *Stainless steels are the only metal, used in induction heaters and
> electrical resistance heaters/ovens.*
>
> *Please do not use Stainless steel or any metal inside the micro-oven
> cooking purpose, as electrical arcing is to appear between the vessel and
> the oven walls.*
>
> *All the above QA are based on Quora digest to me on 27-10-2021. Quora
> answers need not be 100% correct answers *
>
> *Compiler- R. Gopala Krishnan, 78 dated 28 -10-2021*
>
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