GRAVITATION FORCE IS DEPANDS ON THE MASS AND THE DISTENCES BETWEEN TWO BODIES.AND EVERY BODY MUST HAS LESS OR MORE FREE ELECTRONES.WHEN BODY MORE BIG IN IT NUMBERS OF FREE ELECTRONS AND POZITRONS INCREASES.THEY ATTRACTE EACH OTHER.SO EVERY BODY IF IT IS SMALL OR BIG ATTRACTE OTHER BODY. WE CALLS IT GRAVITATION.

    

 

 

 

if function is going towards any number   

 then if that fuction's right & left limits and its value at that any number are same then you can say that that fuction is continue at that number.

 

exe  f(x) = { x    x<0

                { x^2   x>=0             find its continutity at x=0

 

here  lim   x = 0        and     lim   x^2 = 0       f(0) = 0     

        x-->0-                         x-->0+

thus we can say it is continue at x=0

we can find it for trigo function by this methord. for that you can select any interval. if that fuction is continue in that interval then above methord will right for it.

 they guys you canfind it by using the sandwich law

here x is approching to zero  and here f(x)=xsin1/x

so domain of sin is  [-1,1]

so    -1<= six 1/x <=1

        -x<= xsin 1/x <=x

so lim (-x) =  0             &    lim x  =   0

    x-->0                                x-->0 

 

so according to sandwich law  lim  xsin1/x =  0 

                                             x-->0    

 

 

might be wrong     

WEIN'S CONSTANT=LEMDAm * T    T=absolute tem. LEMDAm=max wave lenght

its value is 0.290 cm K

dimention=L1 @1                               @=THITA(tem.)

 

 

WIEN'S DISPLACEMENT LAW

            WAVE LENGHT SIMMILAR TO MAXIMUM SHARPNESS IS INVERSALY PRAPOTIONAL TO THE ABSOLUTE TEMPRETURE OF SOURCE SURFESS.

 

       

L=r X p

  =max height X mv

L = u^2 sin^2@ / 2g X mucos@       @=thita

 

 

 

IT IS VECTOR PRODUCT

YES I DID'NT MENTION THE DIRECTION.

OK THE ANSWER WILL BE (A),(B),(D)

WHICH IS CORRECT ?

 

(A)CONTECT FORCE >FRICTION FORCE

(B)FRICTION FORCE >NORMAL FORCE

(C)NORMAL FORCE > CONTECT FORCE

(D)CONTECT FORCE > NORMAL FORCE 

in projectile motion range is the distance travell by particle.it signify by R

the formula of range= v^2 sin2@ / g       here v = initial velocity of projectile

                                                                  @=angle made by the projectile with the horizontal                     

The Answer Is (A)&(B)

because the escape velocity of that object is found  like this for the object which is escapes from the earth

 

1/2mv^2=GMem/Re

v=root 2GMe/Re         here Me=mass of earth

                                         Re=redius of earth

                                         v=escape velocity of an object  

 

thus it depads on the mass & redius of earth

 

 

mass of an object