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Toppers' Discussion Forum

Discussion Board Class Subject  

Sun October 26, 2014

hydro carbons

nomenclature

By

CBSE XI Exams

Sun October 26, 2014

chemical bonding

explain ho sp3 hybridasisation takes place

By

CBSE XI Chapter Notes

Sat October 25, 2014

exam plaining

how to plan in exam for good result

By

CBSE VIII Exams

Fri October 24, 2014

add a friend

how to add a friend

By

CBSE XII Project Help

Fri October 24, 2014

NUMBER SYSTEM

IF N= ,THEN N EQUALS

By

CBSE IX Mathematics

Tue October 21, 2014

how to crack asl?

By

CBSE VII Chapter Notes

Tue October 21, 2014

fluids

A rectangular block of wood of dimensions 40cm x 20cm x 10cm is kept on a table top. The pressure is greatest when it is rested on  20cm x 10 cm  40cm x 20cm  equal for all cases  40cm x 10cm

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CBSE IX Physics

Tue October 21, 2014

fluids

A student placed an iron cuboid of dimensions 4 cm x 6 cm x 10 cm on a tray containing fine sand. He placed the cuboid in such a way that it was made to lie on the sand with its faces of dimension (a) 4 cm x 6 cm (b) 6 cm x 10 cm (c) 4 cm x 10 cm. if the density of iron is nearly 8 gcm-3 and g = 10 ms-2 the minimum and maximum pressure as calculated by the student should be:  640 Nm-2,1600 Nm-2  3200 Nm-2. 8000 Nm-2  16 Nm-2, 40 Nm-2  32 Nm-2,80 Nm-2

By

CBSE IX Physics

Tue October 21, 2014

Education_Teacher

Term Papers for Sale - Over 70,000 term papers and research papers available for instant download!

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CBSE VI Exams

Tue October 21, 2014

fluids

what is archimed's principle?how can u find the relative density of a solid using it?

By

CBSE IX Physics

Tue October 21, 2014

fluids

a ball appears to be lighter as long as it is in water than when it is outside water.why?

By

CBSE IX Physics

Tue October 21, 2014

fluids

what is the relation between the buoyant force on an object and the liquid displaced byit?

By

CBSE IX Physics

Tue October 21, 2014

gravitation

WHAT ARE THE CAUSES OF BUOYANT FORCE

By

CBSE IX Physics

Sun October 19, 2014

Buoyancy Force

Can anyone give more information on buoyancy force?

By

CBSE IX Reference Notes

Sun October 19, 2014

CIRCULAR MOTION

What are the major differences between centripetal and tangential acceleration?Which of them remains constant during uniform circular motion and why?What are the different ways to calculate either of the acceleration?

By

CBSE XI Chapter Notes

Sun October 19, 2014

how to animals reproduce?

what is meant by niche?

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CBSE X Biology

Sun October 19, 2014

WHY DO WE FALL ILL?

Which of the following bacteria cause peptic ulcer?  Helicobactor hepaticus  Helicobactor pylori  Helicobactor chlolecystus  Helicobactor salomonis

By

CBSE IX Biology

Sat October 18, 2014

solar system

Hi online friend please give me help solar system

By

Thu October 16, 2014

triangle chapter

In given fig PR<PQ and PS bisect<QPR prove that <PSR>< PSq

By

Thu October 16, 2014

Answer pls....

Anyone online,  frnds pls help! very quick 0.1*0.1*0.1+0.02*0.02*0.02/0.2*0.2*0.2+0.04*0.04*0.04=?

By

CBSE XI Chapter Notes

Wed October 15, 2014

ASL

Hello!!!!!!! Please give me ssome tips to crack ASL........ 

By

CBSE X Exams

Wed October 15, 2014

role of parliament

what was the role of parliament in the issue of office memorandum ??????

By

CBSE IX Civics

Tue October 14, 2014

friction

choose the correct option:   rolling friction is smaller than---- 1. static friction 2. sliding friction 3. fluid friction 4. all of the above   on asking the expert,, they said its sliding friction but since static friction is smaller than sliding friction,, rolling friction should also be smaller than staltic friction.. i have doubt whether rolling friction is smaller than fluid friction...  

By

CBSE VIII Exams

Mon October 13, 2014

Use of Trignometry

The angle of elevation of a cloud from a point 'h' metres above a lake is 'theta'.the angle of depression of its reflection in lake is 45 degree.the height of the cloud is- (A)h tan(45+theta) (B)h cot(45-theta) (c)h tan(45-theta) (d)h cot(45+theta)    Suppose H is the height of Cloud and x is horizantal distance form point to cloud. so the hight of cloude from ground is h+H Tan 45 = (2h+H)/x   =>  x= (2h+H)/Tan 45      --------(1) Tan θ = H/x    =>    x=H/Tan θ     - -------------(2)   from (1) and (2)   H/Tan θ= (2h+H)/Tan 45   Find the value of H from above. It is  H= 2h Tan θ/( tan 45- Tan  θ)   Hight of cloud is h+H   so h +H = h +(2h Tan θ/( tan 45- Tan  θ) )   =>  h+H= h(1+tan θ)/(1-tan θ)   => h+H = h (Tan 45+tan θ)/ (1-tan θ tan45) => h+H= h Tan(45+θ)         by using formula  Tan(A+B)= ( Tan A + Tan B) / (1-Tan A TanB)   So the hight of cloud is =h Tan(45+θ)         

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CBSE X Exams

Mon October 13, 2014

THE MAN WHO KNEW TOO MUCH

WHAT WERE THE FACTORS THAT LED TO DECLINE OF QUELCH . DO U THINK HIS FALL FROM GRACE WAS JUSTIFIED? PLS ANSWER FAST FRIENDS TOMORROW I HAVE TEST

By

CBSE IX English
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