Sea-floor spreading — In the early 1960s, Princeton geologist Harry Hess proposed the hypothesis of sea-floor spreading, in which basaltic magma from the mantle rises to create new ocean floor at mid-ocean ridges. On each side of the ridge, sea floor moves from the ridge towards the deep-sea trenches, where it is subducted and recycled back into the mantle . A test of the hypothesis of sea-floor spreading was provided by studies of the Earth's magnetism.

Scalar products can be found by taking the component of one vector in the direction of the other vector and multiplying it with the magnitude of the other vector”. It can be defined as: Scalar product or dot product is an algebraic operation that takes two equal-length sequences of numbers and returns a single number.

The plate movements are classified into three types:
(i) Some plates come towards each other and form convergent boundaries.
(ii) Some plates move away from each other and form divergent boundary.
(iii) At times, they may also move horizontally past each other and form transform boundary.
When two plates come together, they are known as convergent plates. They are also known as constructive plates. When two plates move far away from each other, they are known as divergent plates. When two plates coming towards each other collide or burst pass, they are known as transform plate. The movement of plates causes volcanic eruptions, earthquakes, formation of mountains, etc.

It is related to the attraction of the moon and the sun that develops tides in oceanic waters. Wegener believed that these forces would become effective when applied over many million years.

The polar-fleeing force relates to the rotation of the earth. The earth is not a perfect sphere; it has a bulge at the equator. This bulge is due to the rotation of the earth.

The rocks equidistant on either sides of the crest of mid-oceanic ridges show remarkable similarities in terms of period of formation, chemical compositions and magnetic properties. Rocks closer to the mid-oceanic ridges have normal polarity and are the youngest. The age of the rocks increases as one moves away from the crest.

Mid-Oceanic Ridges:

i. A mid-oceanic ridge is composed of two chains of mountains separated by a large depression.

ii. The mountain ranges can have peaks as high as 2,500 m and some even reach above the ocean’s surface.

iii. Iceland, a part of the mid - Atlantic Ridge, is an example.

A Word processor is a computer program that provides for input, editing, formatting, and output of text. It includes some additional features such as creating, editing, saving, and printing documents.

• Microsoft Word
• Google Doc
• Grammarly
• AutoCrit

SAMSUNG ELECTRONICS,

P.O. BOX 5400-00200,

MUMBAI.

2nd July 2019.

M/S DEE KAY ELECTRONICS,

P.O. BOX 2500-00100,

GUJARAT.

Dear Sir/Madam.

RE: ORDER ACCEPTANCE

We wish to inform you that we received your order of 450 LED TVs of different sizes last week and we accepted the order you made.

The company is willing to make the delivery of the TVs on the 12th July 2019 in the afternoon. Please prepare the store and the personnel to do the offloading from our truck.

Regards.

Yours Faithfully,

signature,

Faridabad Haryana.

Vice President, TV Division.

The Principal

Greenwoods Global School

City

March 1, 2018

Subject: Inadequate books in the school library

Sir:

Respectfully I wish to state that I visited the school library to consult some reference books for my project. To my surprise the librarian told me there were no reference books available. The school is still in the process of buying books for the library. I also found examination related books less in number. Sir, I request you to make books available in the library. I hope you will look into the matter and take prompt action in this regard.

Yours faithfully,

Mehul

Wavewalker was a 23 meter long, 30 ton wooden-hulled boat in which the author along with his family had to undertake round-the-world voyage. It had been professionally built. The author and his family spent months fitting it out and testing it in the roughest weather they could find. The first leg of the voyage was quite smooth. After making a short stay at Cape Town, they resumed their voyage. In the southern Indian ocean, the Wavewalker was badly damaged in a storm.  

Date PARTICULAR. RS.
1.4.2014. COST OF MACHINERY. 50000

31.3.2015. LESS : DEPRECIATION.
50000×10÷100. 5000

1.4.2015. BOOK VALUE. 45000

31.3.2016. LESS : DEPRECIATION.
45000×10÷100. 4500

1.4.2016. BOOK VALUE. 40500

31.3.2017. LESS : DEPRECIATION.
40500×10÷100. 4050

1.4.2017. BOOK VALUE. 36450

30.6.2017. LESS : DEPRECIATION
36450×10÷100×3÷12. 911.25

30.6.2017. BOOK VALUE. 35539(it's 35538.75)

Book value=35539
selling price=20000
since BOOK VALUE is greater than the SELLING PRICE IT'S LOSS.

LOSS ON SALE OF MACHINERY=35539-20000=15539


Furniture account

Debit: Date. particulars. RS. Date. particulars. RS
1.4.2014. To bank. 50000. 31.3.2015. By depreciation. 5000
31.3.2015. By balance c/d. 45000

Total 50000 Total. 50000


1.4.2015. To balance b/d. 45000. 31.3.2016. By depreciation. 4500
31.3.2016. By balance c/d. 40500

Total. 45000. Total. 45000

1.4.2016. To balance b/d. 40500. 31.3.2017. By depreciation. 4050
31.3.2017. By balance c/d. 36450

Total. 40500. Total. 40500

1.4.2017. To balance b/d. 36450. 30.6.2017. By depreciation. 911.25
30.6.2017. By Bank. 20000

30.6.2017. By profit and loss. 15539

Total. 36450. Total. 36450(it's 36450.25)

How much of 0.3 M ammonium hydroxide should be mixed with 30 ml of 0.2 M solution of ammonium chloride to give buffer solutions 10 pH 8.65 and 10. Given pK_b of NH₄OH = 4.75.

A n s w e r :

Let V mL of NH₄OH be mixed with NH₄CI to have a buffer of pH 8.65. The total volume after mixing becomes (V+ 30) mL.

Let V mL of NH4OH be mixed with NH4CI to have a buffer of pH 8.65. The total volume after mixing becomes (V+ 30) mL.

m Mole of NH4OH = 0.3×V

Thus, NH4OH = 0.3×V/ (v+30)

m Mole of NH4CL = 0.2×30

Thus, NH4CL  = 0.2×30/ (v+30)

= 0.2×30/ (v+30)/ 0.3×V/ (v+30)

= 0.61 = log6 /0.3×V

= v = 4.91mL

Similarly,

14-10 = 4.74+log 0.2×30/ (v+30)/ 0.3×V/ (v+30)

for ph = 10

V = 109.9mL

The dimensional formula of gravitational constant is given by,

M^-1 L³ T^-2

Where,

• M = Mass
• L = Length
• T = Time

The grandmother did not like the teaching at English school in the city. She was sad that they did not teach anything about God and the religious scriptures. Nor was she interested in science. She hated music lessons given in the school.

Grandmother is unhappy with the city's education because she is of old thoughts.

She liked the teaching in the schools of the village where they taught about religion and the gods.

She didn't like that school does not teach a thing about religion which according to her was the most important thing.

Answer: MODEM stands for MOdulator/DEModulator. It is a hardware device that enables a computer to send and receive information over telephone lines by converting the digital data used by your computer into an analog signal used on telephone lines and the converting back once received on the other end.

Then narrator rings the bell to meet the woman whom her mother trusted with her valuables and her legacy. She wanted to visit her past and hence she visits the woman who holds the key to her past. 

‘Cardboard’ in the poem refers to the photograph. This word has been used because photograph is now just a piece of paper with the memory as the poet's mother is dead now. It shows that human life is transitory and the cardboard which remains is memorable piece of paper.

Prepare an Accounting Equation from the following:
i. Started business with cash Rs.1,00,000.
ii. Purchased goods for cash Rs.20,000 and on credit Rs.30,000.
iii. Sold goods for cash costing Rs.10,000 and on credit costing Rs.15,000 both at a profit of 20%.
Solution:

 

Area of a circle can simply be evaluated using following formula.

Python3

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