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Hii the only condition which is satisfied when a complex number is real is that the sum of the number and its conjugate is a real number OR in other case difference between them would be zero.
hii It totally depends how the equation of plane is given rather it can be assumed as finding out distance between a line and a point. The normal to both the planes is given in the equation . You just...
Hii assume the 3 vertices of the triangle be postion vectors as a,b,c and having done that you can find out the altitudes of the triangle passing from the vertex and slope perpendicular to the base on...
Hiii You can assume a , b , c to be any vectors in 3D space . And after wards apply the dot and cross product wherever required. It will lead you to the RHS . But if you want to prove it then assume...
Time taken =√2h/g = √2*4.9/9.8= 1Given range = 10U*t= 10U*1 = 10U = 10It leaves plane with velocity 10 m/s
Work done is product of displacement and the component of force in the direction of displacementWork done= 5(2i-2j-k)+4(I+2j+2k)+3(-2i+j-2k) = 8i+j-3k =√74
@ guna the physical quantity which have both direction and magnitude are known as vector . example – velocity , displacement etc . vector obeys some special laws of addition . it have 2 laws –...
fff we know that G devide the point A and mib point of apposite side(D) in ratiio 2:1 so OG =(OA 2OD)/(2+1) so OA + OB + OC =3OG =2OG + OG =GO'+OG =OO' Please feel free to post as many doubts on our...
given tht direction ratios are (1,1,1) and perpendicular distance as given 3√3 so,, d/√(1²+1²+1²) =3√3=> d=9 so the required equation is x+y+z=9
@ pranjal u need to do the following things to enhance the prep for jee . 1- make a proper time table and always stick to it . 2- do practice as much ques as u can but dnt loose time in practicing...
hi dear salma.. if u know the answer to the qusetion..then you can do that how much you know about that queston...otherwise... dont live it … because of something is better than nothing....
@ zaki physical chemistry generally consists of the numericals part , and criticalk thinking part where physics will be applied to solve the problem , so, here below are the chapters which comes...
@ VANSH mostly aquaous solution of alkali hallides are extracted when ethers are added . so, in this case alcl will be eliminated . the answer turns out to be licl and nacl . but if the answer will...
@ vansh 2 unpair electron will be their , sulpher have 16 electron .so, its outer electronic configuration will be 1s2 , 2s2 , 2px2 , 2py2 , 2pz2 , 3s2 , 3px2 , 3py1 , 3pz1 . so, it have 1 unpair...
While we define vectors ,we say that the quantity should follow vector algebra,but current doesnot follow vector algebra ,hence it is a scalar quantity.
A=4i+6j A+B=10i+9j so B=6i+3j angle made with x axis=>tan =y/x=3/6=1/2 =tan -1 ½ hence B=6i+3j and angle made with x axis=tan -1 ½
If you arent satisfied then you can ask here,and if you are then please approve the solution.To find direction you should know sense of rotation.
You should not be concerned about such things,take it as granted that these are the angles in a right triangle having side of the form 3n,4n,5n,n N.
Yes,I too agree, the pictures arent clear,the vectors cannot be read ,so please send the picture ones again
The resaultant can never be equal to zero .because two planar vectors can add up,but the third one has none to counter balance,to make it canceled .so it can never be zero if A,B,C non zero vectors.
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