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Hello Dear
start to study daily 1-2 hour for each subject,first read carefully the theory and concept of any topic or unit and start from initial stage.write down the farmulas in a page and then solve the problems,dont try to solve tough questions,first solve easy and basics type of question and then go for upper level.and to do it u must start from NCERT books,you can take the help of any book in which questions are given in type wise format.first study a theory from one topic and then solve the question based on that theory,ie u have to solve the questions side by side. by this trick you can score good marks in ur test series.and u must solve ur test paper once again after test at ur home.
dont be tense,try this method of study for each subject.it will really work and you will feel the changes in your knowledge.but dont down ur moral.beleive in hard work and God.
if any problem nudge me.
Cheers......................
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Hello dear
if you play the tug of war,then u will see that persons from both end of the string try to pull the rope on their respective sides,then the rope becomes tight,then this tight rope is said to be in the state of tension.and if you hang a block from a ceiling by a string then the string is in the state of tension.
Cheers.................
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method 1:
eithr solve the two equation.......
make equation in quadratic format in x or y,find the sum of roots................
method 2:
apply the concept ;
S1 = T........now find the value of (x1,y1)
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Hello dear
there are lots of rolling concept in the rotational mechanics,so pls specify which concept do you want to know.so that we can help you.....
Cheers...................
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Hello dear
X-ray is an elecromagnetic waves...
Cheers.................
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le the equation of a circle i s:
x2 + y2 +2gx + 2fy + c = 0
it touches axis than..
g2 = f 2 = c;
x-2y=3
(-g,-f)....is the centre:
-g + 2 f = 3............
now,consider the cases and solve for g and f..u will get the answer
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#include <iostream>
using namespace std;
void print (int rowsize);
int main()
{
int rowsize;
do{
cout<<"Please type in a positive odd integer: ";
cin>>rowsize;
}while((rowsize%2==0)||(rowsize<=0));
print(rowsize);
return (0);
}
void print(int rowsize)
{
int spaces=rowsize/2, currentsize=1, counter, count;
for(counter=0;counter!=(rowsize+1)/2;counter++){
for(count=spaces;count!=0;count--)
cout<<" ";
spaces--;
for(count=currentsize;count!=0;count--)
cout<<"*";
currentsize+=2;
cout<<endl;
}
currentsize=rowsize-1;
spaces+=2;
for(counter=rowsize/2;counter!=0;counter--){
for(count=0;count!=spaces;count++)
cout<<" ";
spaces++;
for(count=currentsize;count!=0;count--)
cout<<"*";
currentsize-=2;
cout<<endl;
}
}
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go for sampples papers and previous board exam papers......go for shivdasani for further preparation
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Hello dear
these type of integration is not in your IIT syllabus,so dont waste your time for these.these are the integration of higher mathematics which will you learn in your first year of engineering maths.when you will get admission in BE/B-Tech.
some other functions which are not in JEE syllabus
sinx/x
cosx/x
ex^2
e-x^2
etc...........
Cheers...........................
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Hello dear
The substance which flow are called fluids.fluids include both liquid and gases.the science of fluids at rest is called fluid statics while that of moving fluids hydro-dynamics.fluid statics include hydrostatic pressure , floatation , Pascal's law and Archimedes principle while hydrodynamics includes continuity equation and Bernoulli's principle and Torricelli's theoram.study of these all is basically known as fluid mechanics.
Cheers.........................
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Hello dear geniussam see the solution of nik2009
you will understand............
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Hello dear
Explained
lets see how this happen
change in momentum = P2 - P1
here change in momentum will be only due to change in velocity.
at starting point if ball is is thrown with velocity u and angle is @.
then we know that there is two component of its velocity,and in case of projectile its horizontal component u cos@ will unchanged during whole journey.only vertical component will change.at initial point it will be v sin@ upward direction and when it hits the ground back it will be v sin@ downward direction
so change in velocity will be=v sin@ -(-v sin@)=2v sin@
so change in momentum=m (2vsin@) =mg * 2vsin@ /g
hence option (c)
Cheers.....................
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Hello dear
Read G C Agrwal by G.R BTHLA & Sons publication..............
i hope it will help you to understand the concept of heat...
Cheers..........................
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Hello dear
it is solved here,pls follow the link
http://www.goiit.com/posts/list/0/general-what-is-backlash-error-50881.htm
Cheers........
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equation of any tangent on the hyperbola is ::
x / a sec x - y / b tan x = 1
A = (a cos x, 0)
B = (0,-b cot x)
let the (h,k) be the coordinates of the point :
h = 2a cos x / 5 (1)
k =-3b cot x / 5 (2)
eliminate (x) from the equation 1 and 2..you will get the locus of the points..
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Hello dear
differenciate it with respect to t and put t=0
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Hello dear
pleasewread the theory carefully you will get the ans
ans is (b) (c) and (d)
Cheers.......
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Hello dear
apply the Kepler's law
T2 proportional r3
ans would be 8T hence (c) is right ans
Cheers............
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Hello dear
use these steps
1-study the theoritcal part from any good book and build your concept
2-concept of kinematics and Force must be very clear,because in work they always comes
3-try to apply the work energy theoram (and law of conservation of energy)
Cheers...................
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Hello dear
in order to explain the distribution of energy in the spectrum of black body radiation Max Planck assumed that electromagnetic radiation are not emitted or absorbed continuously by a body but in descrete bundles or packets of energy called quanta.later on these quanta of energy were called 'Photons'. the energy associated with a photon is given by
E =h v
where v is frequency of radiation and h planck's constant .
h=6.6*10-34 J-s
Cheers................
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