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Recent questions tagged p62
Questions
Forces of magnitudes $3$ and $4$ units acting in the directions $\overrightarrow{6i}+ \overrightarrow{2j} +\overrightarrow{3k}$ and $\overrightarrow{3i}-\overrightarrow{2j}+\overrightarrow{6k}$ respectively act on a particle which is displaced from the point $(2,2,-1)$to$( 4,3,1)$. find the work done by the forces.
tnstate
class12
bookproblem
ch2
sec-1
exercise2-2
p62
q8
asked
Apr 4, 2013
by
poojasapani_1
1
answer
The constant forces $\overrightarrow{2i}-\overrightarrow{5j}+ \overrightarrow{6k}, -\overrightarrow{i}+\overrightarrow{2j}-\overrightarrow{k},$and $\overrightarrow{2i}+\overrightarrow{7j} $ act on a particle which is displaced from position $\overrightarrow{4i}-\overrightarrow{3j}-\overrightarrow{2k}$ to position $\overrightarrow{6i}+\overrightarrow{j}-\overrightarrow{3k}$. find the work done.
tnstate
class12
bookproblem
ch2
sec-1
exercise2-2
p62
q7
asked
Apr 4, 2013
by
poojasapani_1
1
answer
A force magnitude $5$ units acting parallel to $\overrightarrow{2i}-\overrightarrow{2j}+ \overrightarrow{k}$ displaces the point of application from $(1,2,3)$to $(5,3,7) $ find the work done.
tnstate
class12
bookproblem
ch2
sec-1
exercise2-2
p62
q6
oct-2006
oct-2009
modelpaper
asked
Apr 4, 2013
by
poojasapani_1
1
answer
Find the work done by the force $f=\overrightarrow{2i} + \overrightarrow{j}+\overrightarrow{k}$ acting on particle, if the particle is displaced from the point with position vector $\overrightarrow{2i}+ \overrightarrow{2j}+ \overrightarrow{2k}$ to the point with the position vector $\overrightarrow{3i}+\overrightarrow{4j}+\overrightarrow{5k}$ .
tnstate
class12
bookproblem
ch2
sec-1
exercise2-2
p62
q5
asked
Apr 4, 2013
by
poojasapani_1
1
answer
Prove by the vector method , cos$(A+B)=$ cos$A$ cos$B$ - sin$A$ sin$B$
tnstate
class12
bookproblem
ch2
sec-1
exercise2-2
p62
q4
mar-2006
mar-2008
modelpaper
asked
Apr 3, 2013
by
poojasapani_1
1
answer
Prove by vector method , The sum of the squares of the diagonals of a parallelogram is equal to the sum of the squares of the sides.
tnstate
class12
bookproblem
ch2
sec-1
exercise2-2
p62
q3
asked
Apr 3, 2013
by
poojasapani_1
1
answer
Prove by vector method, The mid point of the hypotenuse of a right angled tringle is equidistant from its vertices.
tnstate
class12
bookproblem
ch2
sec-1
exercise2-2
p62
q2
asked
Apr 3, 2013
by
poojasapani_1
1
answer
Prove by the vector method If the diagonals of a parallelogram are equal than it is a rectangle.
tnstate
class12
bookproblem
ch2
sec-1
exercise2-2
p62
q1
asked
Apr 3, 2013
by
poojasapani_1
1
answer
If A is a skew symmetric matrix, then $A^2$ is a ____________ .
cbse
class12
ch3
q75
p62
fitb
exemplar
sec-a
easy
math
asked
Dec 24, 2012
by
sreemathi.v
1
answer
If A is a symmetric matrix, then $A^3$ is a _________ matrix.
cbse
class12
ch3
q74
p62
fitb
exemplar
sec-a
easy
math
asked
Dec 24, 2012
by
sreemathi.v
1
answer
Matrix multiplication is __________ over addition.
cbse
class12
ch3
q73
p62
fitb
exemplar
sec-a
easy
math
asked
Dec 24, 2012
by
sreemathi.v
1
answer
A matrix which is not a square matrix is called a __________ matrix.
cbse
class12
ch3
q72
p62
fitb
exemplar
sec-a
easy
math
asked
Dec 24, 2012
by
sreemathi.v
1
answer
The product of any matrix by the scalar ____________ is the null matrix.
cbse
class12
ch3
q71
p62
fitb
exemplar
sec-a
easy
math
asked
Dec 24, 2012
by
sreemathi.v
1
answer
The negative of a matrix is obtained by multiplying it by
cbse
class12
ch3
q70
p62
fitb
exemplar
math
sec-a
asked
Dec 24, 2012
by
sreemathi.v
1
answer
Sum of two skew symmetric matrices is always ____________ matrix.
cbse
class12
ch3
q69
p62
fitb
exemplar
sec-a
easy
math
asked
Dec 24, 2012
by
sreemathi.v
1
answer
________________ matrix is both symmetric and skew symmetric matrix.
cbse
class12
ch3
q68
p62
fitb
exemplar
sec-a
easy
math
asked
Dec 24, 2012
by
sreemathi.v
1
answer
On using elementary row operations $R_2\times R_1-3R_2$ in the following matrix equation $\begin{bmatrix}4 & 2\\3 & 3\end{bmatrix}=\begin{bmatrix}1 & 2\\0 & 3\end{bmatrix}\begin{bmatrix}2 & 0\\1 & 1\end{bmatrix}$,we have:
cbse
class12
ch3
q67
p62
objective
exemplar
easy
sec-a
math
asked
Dec 24, 2012
by
sreemathi.v
1
answer
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