﻿

Ask questions which are clear, concise and easy to understand.

Find five rational no between 1and2 . We approach this problem in least two ways.

Posted by Murli Manohar (Jul 23, 2017 12:46 p.m.) (Question ID: 6868)

• Since we need to find 5 rational nubers between 1 and 2 so we will multiply and divide both numbers by 5+1 =6

So 1=1×{tex}{6\over 6}{/tex}    and 2=2×{tex}{6\over6}{/tex}

=> 1={tex}{6\over6}{/tex}   and 2={tex}{12\over 6}{/tex}

So five rational numbers between 1={tex}{6\over 6}{/tex}and 2 ={tex}{12\over 6}{/tex} are

{tex}{7\over 6}{/tex},{tex}{8\over 6}{/tex},{tex}{9\over 6}{/tex},{tex}{10\over 6}{/tex} and {tex}{11\over 6}{/tex}

In general if need to find n rational numbers between  a and b then we multiply and divide both the numbers by n+1, then write numbers from a(n+1) to b(n+1) and after that divide it by (n+1) we get required rational numbers between a and b.

in above problem a=1 b=2  and n=5 so we multiply and  divide 1 and 2 by 5+1=6.

Now the numbers between a(n+1)=1×6=6 to b(n+1)=2×6=12 are 7,8,9,10 and 11.

So required rational numbers are 7/6,8/6,9/6,10/6 and 11/6.

Answered by Dharmendra Kumar (Jul 23, 2017 7:06 p.m.)
Thanks (0)
• We can write 1 as {tex}{1 \over 1}{/tex} and 2 as {tex}{2 \over 1}{/tex}

Multiplying denominator by 10, we have

{tex}{1 \over 10}{/tex} and {tex}{2 \over 10}{/tex}

Now, you can choose any five rational numbers between

{tex}{1 \over 10}{/tex} and {tex}{2 \over 10}{/tex}

{tex}{2 \over {10}},{3 \over {10}},{4 \over {10}},{5 \over {10}},{6 \over {10}},{7 \over {10}},{8 \over {10}},{9 \over {10}}{/tex}

Answered by Rashmi Bajpayee (Jul 23, 2017 4:20 p.m.)
Thanks (0)
• Let a = 1 , b = 2 , n = 5 ,

b - a = 1 , n + 1 = 6

Therefore 5 rational numbers between 1 and 2 will be

a + (b - a) / 6 , a + 2(b - a) / 6, a + 3(b - a) / 6 , a + 4(b - a) / 6 , a + 5(b - a)/ 6

1 + 1/6 , 1 + 2/6 , 1 + 3/6 , 1 + 4/6 , 1 + 5/6 ,

7/6 , 8/6 , 9 / 6 , 10 / 6 , 11 / 6

Hence required rational numbers are

7/6, 4/3, 3/2, 5/3, 11/6

Answered by Hans Raj (Jul 23, 2017 4:08 p.m.)
Thanks (0)

what is significance of rule of law and respect for rights in democratic country

Posted by Viddhi Bothra (Jul 23, 2017 12:29 p.m.) (Question ID: 6867)

Features of India

Posted by Abdul Basit (Jul 23, 2017 12:24 p.m.) (Question ID: 6866)

• Secularity

Democracy

Etc

Answered by Arpan Bhowmick (Jul 23, 2017 9:13 p.m.)
Thanks (0)

In triangle abc b-a =30 c-b =45

Find all the angles

Posted by Harishmehta71@Gmail.Com Natvarlal (Jul 23, 2017 12:36 a.m.) (Question ID: 6856)

3b = 180 - 15 = 165          b = 55

a = 55 - 30 = 25

c = 55 + 45 = 100

therefore  a = 25 , b = 55  ,  c = 100

Answered by Hans Raj (Jul 23, 2017 6:16 p.m.)
Thanks (0)
• In a triangle, we know that a + b + c = 180               ...............(i)

Given: b - a = 30          =>          b = a + 30       ..............(ii)

Also,    c - b = 45         =>           b = c - 45        ..............(iii)

Putting value of b from eq.(ii), in eq.(i), we get

a + a + 30 + c = 180

=>          2a + c = 150                ...............(iv)

Again putting the value of b from eq.(iii), in eq.(i), we get

a + c - 45 + c = 180

=>          a + 2c = 225               ................(v)

On solving eq.(iv) and eq.(v), we get

a = 25 and c = 100

Then, b = 30 + a = 30 + 25 = 55

Therefore, a = 25, b = 55, c = 100

Answered by Rashmi Bajpayee (Jul 23, 2017 4:33 p.m.)
Thanks (0)
• b - a = 30         a =  b - 30   ....... i

c - b =45         c = b + 45 ..........ii

a + b + c = 180.....iii

substitute i and ii  in iii

b - 30 + b + b + 45 = 180

Answered by Hans Raj (Jul 23, 2017 4:26 p.m.)
Thanks (0)

What s the definition of distillation and fractional distillation?

Posted by Yash Gandhi (Jul 22, 2017 8:17 p.m.) (Question ID: 6841)

• Distillation is the process of separation and purification of different components of mixture of two or more immiscible organic liquids with appreciable difference in their boiling point. The separation takes place as more volatile solute will distil first.

Fractional distillation is a technique for the separation of miscible liquids. It is a distillation technique used for the separation of liquids which dissolve in each other. Fractional distillation is a process of separating the components of a mixture by repeated distillations and condensations.

Answered by Sahdev Sharma (Jul 22, 2017 11:22 p.m.)
Thanks (0)

Processing refers to series of action performed on data which is done inside cpu where the control unit and the internal storage are linked Together by sets of parallel electrical conducting lines that categorised to carry data. In such processing, Signals and addresses can be called as???

Posted by Sam 1735 Fan .Piyush Kumar (Jul 21, 2017 6:47 a.m.) (Question ID: 6807)

what is displacement?

Posted by Anshul Rathore (Jul 20, 2017 5:55 p.m.) (Question ID: 6791)

• Difference between final position and initial position are called displacement.

Answered by Kriti Bhawsar (Jul 20, 2017 7:48 p.m.)
Thanks (2)
• A displacement is a vector whose length is the shortest distance from the initial to the final position of a point P. It quantifies both the distance and direction of an imaginary motion along a straight line from the initial position to the final position of the point

Answered by Sahdev Sharma (Jul 20, 2017 6:20 p.m.)
Thanks (2)

What is the importance of physical education?

Posted by Khyati Jain (Jul 18, 2017 8:04 p.m.) (Question ID: 6740)

What is AAS congruency rule?

Posted by Muazzam Ali (Jul 17, 2017 8:54 p.m.) (Question ID: 6720)

• ASA      Angle Side Angle     Rule

Two triangles are congruent if the two angles and the included side are equal

similarly there are 5 ways of finding if the two tringles are congruent

SSS, SAS , AAS, ASA, HL

Caution   AAA       Angle Angle Angle

Triangles which have three equal angles , we cannot be sure if they are congruent without knowing at least one side

Answered by Hans Raj (Jul 21, 2017 8:06 a.m.)
Thanks (0)
• AAS Congruence Criterion: If any two angles and a non-included side of one triangle are equal to the corresponding angles and side of another triangle, then the two triangles are congruent.

Answered by Sahdev Sharma (Jul 20, 2017 6:35 p.m.)
Thanks (0)
• ASA is the Angle Side Angle rule.

In which we can say triangles are congruent by seeing their two angles and one side.

Answered by Arpan Bhowmick (Jul 18, 2017 9:38 a.m.)
Thanks (0)

What is difference between parenchyma, collenchyma and sclerenchyma??????

Posted by Rina Chokshi (Jul 17, 2017 7:03 p.m.) (Question ID: 6716)

•

 Parenchyma Collenchyma Sclerenchyma It primary function is storage.Also provides support. Provides mechanical support and flexibility. Primarily mechanical in function. Present in epidermis,cortex,endodermis,etc. Present in midrib and leaf stalks. Present in monocot stem,huskof coconut, seed covering,etc.

Answered by Naannmalar B (Jul 18, 2017 1:34 p.m.)
Thanks (0)
•  Parenchyma collenchyma sclerenchyma Consists of a thin cell wall Consists of an unequally thin cell wall Consists of a thick and rigid cell wall Cell wall is made up of cellulose Cell wall is made up of cellulose and pectin Cell wall is made up of waterproofing lignin Intercellular space is present between cells No or little intercellular space is present between cells No intercellular space is present between cells

Answered by Poulami Dasgupta (Jul 17, 2017 8:20 p.m.)
Thanks (0)

A body start from point A and attain velocity 32 m/s in 10 second. Find acceleration?

Posted by Harjoban Singh (Jul 17, 2017 6:27 p.m.) (Question ID: 6715)

• As body start from rest so Initial velocity u = 0 m/s

Final velocity v = 32 m/s

Time taken t = 10 s

Let acceleration = a

We know,

{tex}a = {v-u\over t}{/tex}

{tex}=> a = {32-0\over 10}= 3.2\ m/s^2{/tex}

Answered by Sahdev Sharma (Jul 17, 2017 6:36 p.m.)
Thanks (0)

Momentum can be negative.how?

Posted by Md Sagir Alam Ansari (Jul 16, 2017 8:09 a.m.) (Question ID: 6670)

• If we decide that the downward direction is positive (that is displacement, velocity etc.is +ve in the downward direction) then the direction opposite to it is negative.

If we drop a ball from roof then

• when the ball falls down it has +ve velocity

∴ the product m.v that is momentum is positive (mass cannot be negative)

•  after the bounce, the velocity is in the negative direction

∴ product m.v that is momentum is negative

Answered by Payal Singh (Jul 20, 2017 6:55 p.m.)
Thanks (0)

Find the area of a right angled triangle whose hypotenuse is 25cm and base is 7cm

Posted by Aman Gupta (Jul 15, 2017 8:50 p.m.) (Question ID: 6666)

• Using Pythagoras Theorm

{tex}Height = \sqrt {(hypotenuse)^2-(base)^2}{/tex}

{tex}= \sqrt{625-49}{/tex}

{tex}= \sqrt{576}= 24 {/tex} cm

Area of ∆ = {tex}{1\over 2}\times base\times height{/tex}

{tex}{1\over2}\times 7\times 24= 84\ cm^2{/tex}

Answered by Sahdev Sharma (Jul 15, 2017 10:14 p.m.)
Thanks (0)

How is 39/20 a rational number lying between 0.75 and 1.2

Posted by Latha G (Jul 13, 2017 9:18 p.m.) (Question ID: 6624)

• Please send it as soon as possible

Posted by Latha G (Jul 13, 2017 9:20 p.m.)
• No, it does not lie between 0.75 and 1.2

Answered by Himanshu Singhal (Jul 22, 2017 7:43 p.m.)
Thanks (0)

Which chapters comes in term 1

Posted by Pushark Kumar (Jul 13, 2017 6:13 a.m.) (Question ID: 6607)

Who hanged louis xvi to death

Posted by Yuvaraj N (Jul 12, 2017 6:34 p.m.) (Question ID: 6593)

• The people of france...

Answered by Archith Jayalal (Jul 12, 2017 6:41 p.m.)
Thanks (0)

Louis xvi belong to which family

Posted by Yuvaraj N (Jul 12, 2017 6:32 p.m.) (Question ID: 6592)

• Louis XVI belonged to the Bourbon Dynasty. He became the king when the treasury of Bourbon Dynasty came to an end due to long drawn out wars fought with other countries.

Answered by Bivangsu Kundu (Jul 12, 2017 11:41 p.m.)
Thanks (0)
• bourbon

Answered by Dipti Gupta (Jul 12, 2017 7:07 p.m.)
Thanks (0)

Differentiate himalayan and peninsular rivers.

Posted by Tejas Amrish (Jul 12, 2017 6:19 a.m.) (Question ID: 6584)

• Himalayan rivers are perennial in nature, whereas peninsular rivers are seasonal in nature and dry up in summers as they are dependent upon rainfall.
• Himalayan rivers cause much erosion and have great flow of water, whereas peninsular rivers create much less erosion and also have weaker flow of water.
• Himalayan rivers are meandering, whereas peninsular rivers are straight.
• Himalayan rivers create great plains suitable for agriculture, urbanization, and industrialization. These are some of the most densely populated areas in the country.
• Himalayan rivers originate in the Himalayas, whereas peninsular rivers originate in small hills and plateaus.
• Himalayan rivers are much longer and deeper than peninsular rivers.
• Basins of Himalayan rivers are much deeper than the basins of peninsular rivers.
• Himalayan rivers irrigate the northern plains, whereas peninsular rivers irrigate the Deccan Plateaus.
Answered by Sahdev Sharma (Jul 12, 2017 8:44 a.m.)
Thanks (0)

Simplify (0.001)^1/3

Posted by Meet Sharma (Jul 11, 2017 9:59 p.m.) (Question ID: 6580)

• {tex}(0.001)^{1\over 3}{/tex}

{tex}((0.1)^3)^{1\over 3}{/tex}

{tex}(0.1)^{3\times {1\over 3}}{/tex}

{tex}(0.1)^1= 0.1 {/tex}

Answered by Payal Singh (Jul 12, 2017 8:48 a.m.)
Thanks (0)
• {tex}(0.001)^{1\over 3}{/tex}

{tex}((0.1)^3)^{1\over 3}{/tex}

{tex}(0.1)^{3\times {1\over 3}}{/tex}

{tex}(0.1)^1= 0.1 {/tex}

Answered by Sahdev Sharma (Jul 12, 2017 8:47 a.m.)
Thanks (0)

Root 12 multiply root 5

Posted by Poshan Sharma (Jul 11, 2017 7:49 p.m.) (Question ID: 6569)

• √12×√5=√60

=2√15

Answered by Ashutosh Kumar (Jul 12, 2017 6:53 a.m.)
Thanks (0)

Explain the three reforms introduced in russia by czar nicholas 2 after the revolution

Posted by Unnati Mishra (Jul 11, 2017 6:40 p.m.) (Question ID: 6566)

Examples for newton second law

Posted by Yuvaraj N (Jul 11, 2017 5:25 p.m.) (Question ID: 6564)

• Examples of Newton's 2nd Law  If you use the same force to push a truck and push a car, the car will have more acceleration than the truck, because the car has less mass.  It is easier to push an empty shopping cart than a full one, because the full shopping cart has more mass than the empty one

Answered by Dr Pathikrt Banerjee (Jul 11, 2017 7:10 p.m.)
Thanks (0)

Question no. 6maths biok chaptet 6

Posted by Aakash Kumar (Jul 11, 2017 3:14 p.m.) (Question ID: 6562)

What is interparticle force of attraction.

Posted by Vedant Singh (Jul 10, 2017 8:52 p.m.) (Question ID: 6545)

• Inter-molecular forces (IMFs) are the forces which mediate interaction between molecules, including forces of attraction or repulsion which act between molecules and other types of neighboring particles, e.g., atoms or ions.

Answered by Sahdev Sharma (Jul 10, 2017 10:58 p.m.)
Thanks (0)

Solve equation for x

(i) 22x-2x+3+24=0

(ii) 32x+4+1=2.3x+2

Posted by Dipankar Nath (Jul 10, 2017 8:02 p.m.) (Question ID: 6543)

• (i) {tex}2^{2x}-2^{x+3}+2^4=0{/tex}

{tex}=> (2^x)^{2}-2^{x}2^{3}+16=0{/tex}

Put 2x= y

{tex}=> y^2-8y+16=0{/tex}

{tex}=> y^2-4y-4y+16=0{/tex}

{tex}=> y(y-4)-4(y-4)=0{/tex}

=> (y-4)(y-4) = 0

=> y = 4

{tex}=> 2^x= 4{/tex}

=> {tex}2^x= 2^2{/tex}

So value of x = 2

Answered by Sahdev Sharma (Jul 10, 2017 11:04 p.m.)
Thanks (0)

How we can say that a athlete running in a circular path is moving in a accelerated motion

Posted by Dhruv Gupta (Jul 08, 2017 3:44 p.m.) (Question ID: 6477)

• Because the direction of running is constantly changing.

Answered by Rachna Gupta (Jul 08, 2017 4:08 p.m.)
Thanks (0)

What is nucleoid

Posted by Priyanshu Kunal (Jul 08, 2017 9:29 a.m.) (Question ID: 6472)

• IT A TYPE OF CELL THAT U R NOT HAVING IT IS ALSO CALLED AS LUND

Answered by Sujal Agrawal (Jul 09, 2017 12:58 p.m.)
Thanks (0)
• The nucleoid is the region in the prokaryotic cell that contains the main DNA material. As a side note, some DNA will be in other sections of the cell, but the primary material will be in the nucleoid.

Answered by Arun Soni (Jul 08, 2017 2:47 p.m.)
Thanks (0)

How will you show that air has maximum compressibilit

Posted by Nandan Dodderimath (Jul 07, 2017 9:39 p.m.) (Question ID: 6461)

• Applying pressure and reducing temperature can liquefy gases. To show that air has the maximum compressibility we need perform a simple activity.

AIM-To show that gas are compressible.

MATERIIAL REQUIRED  3 Syringe, Rubber cork, Chalk powder, Water.

PROCEDURE:

• Take 3 syringes and remove the needles from their ends and seal those ends

• Now take a small amount of chalk and water and put it inside the syringes through the other end by plugging out the compressor in the first 2 syringes separately and close the ends.

• Leave the 3rd  syringe undisturbed. Now take all the syringes and try to compress them.

•  You will notice that the syringe with chalk is unable to be compressed and in the syringe with water you can push the stopper to a small extent and in the 3rd syringe which we have kept empty will be compressed to a high extent in comparison to the 1st two syringes.

• This shows that air (mixture of gases) can be compressed to a high extent in comparison to solids and liquids.

• This is because they have greater intermolecular spaces in them which when compressed decreases and thus we are able to compress air.

•

Conclusion: Gases are compressible because there is large amounts of space between the gas particles which allow them to be compressed together under pressure. For liquids there is very little space between the particles so when put under pressure there is very little compression possible. And for solids there is no space between the particles so there is no compression possible.

Answered by Dr Pathikrt Banerjee (Jul 08, 2017 8:52 a.m.)
Thanks (0)

WHAT IS THE MEANING OF SUJAL

Posted by Sujal Agrawal (Jul 07, 2017 4:42 p.m.) (Question ID: 6452)

(x+4)(x+10)

Posted by Sujal Agrawal (Jul 07, 2017 4:40 p.m.) (Question ID: 6451)

• (x+4)(x+10)=x(x+10)+4(x+10)

=x2+10x+4x+4×10

=x2+14x+40

Answered by Dharmendra Kumar (Jul 21, 2017 11:38 p.m.)
Thanks (0)
• = (x+4)(x+10)

= x2+10x+4x+40

= x2+14x+40

Answered by Ashutosh Kumar (Jul 07, 2017 6:37 p.m.)
Thanks (0)