Case I:
let initial velocity = u m/s
distance=s=12m
Time =t=2sec
S=u+a(2t-1)/2
12=u+(2x2-1)/2
12=u+3a/2
2u+3a=24--------------(1)

Case II:
Time=t=4sec
distance =s=20m
20=u+a(2x4-1)/2
20=u+7a/2
2u+7a=40--------(2)
from 1 and 2:
2u+3a=24
2u+7a=40
-      -     -
***********
-4a=-16
a=4m/s2
substitute the value of a in equation 1 we get :
u=6m/s 
Case iii:
Now, distance covered in 4sec after 5second=distance covered in 9th sec-distance covered in 5 sec
=(6x9+1/24x9x9)-(6x5+1/2*4*5*5)
=54+162-(30+50)
=136m
 

.Four Kingdom Classification System
The four kingdom classification system included Monera in addition to Protista, Plantae and Animalia. Studies with electron microscope made it clear that bacteria and related organisms have a different nuclear structure as compared to others. They are* prokaryotes, thus kingdom-Monera was created by Copeland (1956). Fungi continued to remain with Plantae in this system.

Large expansion of Roman territory was in a less advanced state. Transhumance was spread in the countryside of Numidia. These pastoral and semi-nomadic communities were often on the move, carrying their oven-shaped huts (called mapalia). As Roman estates expanded in North Africa, the pastures of those communities were hugely reduced and their movements more tightly regulated. Even in Spain the north was much less developed, and inhabited largely by a Celtic-speaking peasantry that lived in hilltop villages called castella.

Mrs. Dorling is that individual who takes away all of narrator mother's belongings for safekeeping before the war strikes out. She is an impolite and a very selfish woman who doesn't recognize the narrator when the narrator comes for retrieving the things given to her before the war. She refuses to recognize the identity of the narrator and doesn't let the narrator to enter her house. She pretends to not recognize her, even though she does in reality. Her behaviour isn't justified since she breaks the trust of the narrator of her being good and kind. She is selfish and wishes to not return the articles once taken at all.

The narrator and his wife wanted to ‘duplicate’ the round—the world voyage made 200 years earlier by Captain James Cook. They had been making formidable preparations for the last 16 years. First of all they got a boat especially designed and professionally built for this purpose. It was a 23 metre, 30 tonne wooden-hulled boat. They tested it for months in the roughest weather. They were both mentally and physically prepared to undertake their exceptionally long and challenging sea-voyage.

OR

They had been preparing for the past 16 years, spending all their leisure time honing their seafaring skills in British waters in lieu of their round the world voyage. Their boat, the Wavewalker, was a 23 metre, 30 ton wooden-hulled beauty which had been professionally built and they had spent months fitting it out and testing it in the roughest weather possible. The family also took on two crewmen, American Larry Vigil and Swiss Herb Seigler to help them tackle one of the world's roughest seas,the southern Indian Ocean.

According to the assessment pattern of CBSE Class 11 Applied Mathematics, out of 100 marks, 70 marks is for theory papers and 30 marks are for practical. This subject has some very interesting projects. For complete details, download the PDF of CBSE Class 11 Applied Mathematics Handbook from the link given below

<a href="https://testchampion.jagranjosh.com/free-pdf-page?file=cbse-class-11-applied-mathematics-book.pdf" rel="noopener" target="_blank">Download CBSE Class 11 Applied Mathematics Handbook</a>

It was on this day that a CT scan was done on King Tutankhamen’s mummy after an X-ray on the same by an anatomy professor. His was the first Egyptian mummy to undergo such a scan. A modern operation performed on a cursed ancient mummy paved way for various superstitions and rumors. The CT scan resulted in producing various life-like images.

King Tut was buried in a coffin made of pure gold “lavished with glittering goods”. The gilded treasures found included precious collars, inland necklaces and bracelets, rings, amulets, a ceremonial apron, sandals, sheaths for his fingers and toes. In those times, the royals believed in the idea of taking their wealth with them. Tut was adorned with all such riches for his journey after life. It also gives the idea of the Egyptian belief in resurrection.

The mummified body of King Tut (Tutankhamun 1355 - 1346 BC) was cut up in several places by the first expedition led by British Egyptologist Howard Carter, sometime in 1925-26. This was done to extract the jewels and amulets that were adorned on the embalmed body. The remains had become fragile due to this mishandling and rested on a sandy coffin. Since then, it had been moved twice for examination by X-Ray.

In January, 2005, it was taken for a complete CT scan, by an Egyptian team, to establish the cause of death of the young king. Thousands of scanned images were reviewed and it was established that King Tut was not murdered.

Visitors from different places came to the Tut’s grave to pay him respect.  They watched the frescos on the walls of the burial chamber and stared at Tut’s face with keen interest. Some visitors read noiselessly from their guidebooks about the life of the young pharaoh. Everyone tried to make a scrutiny about the death mystery of the young pharaoh. The mummy was of great interest to everyone.

Partner by estoppel: A person is considered a partner by estoppel if, through his/her own initiative, conduct or behaviour, he/she gives an impression to others that he/she is a partner of the firm. Such partners are held liable for the debts of the firm because in the eyes of the third party they are considered partners, even though they do not contribute capital or take part in its management. Suppose Rani is a friend of Seema who is a partner in a software firm — Simplex Solutions. On Seema’s request, Rani accompanies her to a business meeting with Mohan Softwares and actively participates in the negotiation process for a business deal and gives the impression that she is also a partner in Simplex Solutions. If credit is extended to Simplex Solutions on the basis of these negotiations, Rani would also be liable for repayment of such debt, as if she is a partner of the firm.

A transistor is a semiconductor device that transfers a weak signal from low resistance circuit to high resistance circuit. In simple words, what it means is that it regulates and amplifies electrical signals such as voltage or current. 
Transistors are special because they allow you to control how much current flows through a circuit. This can be achieved by controlling the voltage across two of the transistor leads. Each transistor has three leads.
A transistor is an influential little invention that changed the course of history for computers and all electronics. A transistor consists of two PN diodes that are connected back to back. It has three terminals that are named emitter, base and collector. John Bardeen, William Shockley, and Walter Brattain were scientists at the Bell Telephone Laboratories. The idea for transistors arose when they were working on an idea that used a field effect to control the current in a semiconductor.

Instantaneous velocity can be equal to average velocity when the acceleration is zero or velocity is constant because in this condition all the instantaneous velocities will be equal to each other and also equal to the average velocity. Or distance -time graph will be a straight line whose slope (velocity) is same at every point .

The ordering of organisms into groups on the basis of non-evolutionary features (e.g. the grouping together of plants according to the number and situation of their stamens, styles, and stigmas rather than their evolutionary relationships). An artificial system of classification is based upon one or a few easily observable characteristics, and is devised and used for a limited purpose where convenience and speed are important. It conveys little information.

मध्यकाल में चर्च के अतिरिक्त धार्मिक गतिविधियों का केन्द्र मठ भी थे। मठ आबादी से दूर स्थापित थे। मठों में भिक्षु रहा करते थे। वे प्रार्थना करते, अध्ययन करते और कृषि का भी कुछ कार्य। करते रहते थे। मठों का मुख्य कार्य धार्मिक प्रचार-प्रसार करना था। मठों ने कला के विकास में भी । योगदान दिया।

Every object in the universe attracts every other object with a force which is called the force of gravitation.

Gravitation is one of the four classes of interactions found in nature.

These are

(i) the gravitational force

(ii) the electromagnetic force

(iii) the strong nuclear force (also called the hadronic force).

(iv) the weak nuclear forces.

Although, of negligible importance in the interactions of elementary particles, gravity is of primary importance in the interactions of objects. It is gravity that holds the universe together.

The narrator found herself in the midst of all those ‘nice things’. They once belonged to her mother. The silver cutlery, the antique plates, large vases, tea pots, the table cloth with the burn marks were there. But they lay there in a ‘tasteless’ manner. No doubt, they aroused nostalgic feelings in her. The narrator didn’t long to possess them any more. They were useless now. Their true owner was no more in the world.

The narrator kept staring at the woollen table cloth because  she did not want to look around, she was scared to do so. As she stared at the table cloth and began to rub it, her fingers grew warm from rubbing, she followed the lines of the pattern and somewhere on the edge, she started looking for a burn mark that had never been repaired. She realized then that it was her mother's table cloth.