Ask Questions, Get Answers
Menu
X
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
studyplans
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
CBSE XII
Math
JEEMAIN
Math
Physics
Chemistry
Practice Test Series
CBSE XI
Math
NEET
Physics
Chemistry
Biology - XII
Biology - XI
Olympiad class V
Math - 5 Test Series
Olympiad class VI
Math - 5 Test Series
mobile
exams
ask
sample papers
tutors
pricing
login
X
ASK
Home
>>
EAMCET
>>
Mathematics
A certain vector in the $xy$ plane has an $x$ component of 4 m and any component of 10 m. It is then rotated in the $xy$ plane so that its $x-$ component is doubled. Then its new y component is (approximately):
\[\begin {array} {1 1} (a)\;20\;m & \quad (b)\;7.2\;m \\ (c)\;5.0\;m & \quad (d)\;4.5 \;m \end {array}\]
jeemain
eamcet
physics
2011
q86
Share
asked
Sep 23, 2013
by
meena.p
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1 Answer
(b) 7.2 m
answered
Nov 7, 2013
by
pady_1
Please
log in
or
register
to add a comment.
Related questions
The line joining the points $A(2,0)$ and $B(3,1)$ is rotated through an angle of $45^{\circ}$, about A in the anticlockwise direction. The coordinates of B in the new position
jeemain
eamcet
math
2011
q63
asked
Sep 23, 2013
by
meena.p
1
answer
A thin bi-convex lens of focal length 20 cm is made of glass of refractive index 1.5, when it is dipped in a liquid of refractive index $ \large\frac{9}{8} $, it acts as :
jeemain
eamcet
physics
2011
q86
asked
Nov 1, 2013
by
thanvigandhi_1
1
answer
Aline segment $AM=a$ moves in the $XOY$ plane such that $AM$ is parallel to the $x-axis$. If A moves along the circle $x^2+y^2=a^2$, then the locus of M is
jeemain
eamcet
math
2011
q68
asked
Sep 23, 2013
by
meena.p
1
answer
A bar magnet of moment of inertia I is vibrated in a magnetic field of induction $0.4 \times 10^{-4}T$ . The time period of vibration is 12 sec. The magnetic moment of the magnet is 120$Am^2$ . The moment of inertia of the magnet is ( in $kgm^2$) approximately
jeemain
eamcet
physics
2013
q86
asked
Oct 8, 2013
by
thanvigandhi_1
1
answer
A compass needle whose magnetic moment is $60Am^2$ pointing geographic north at a certain place, Where the horizontal component of earth's magnetic field is $40 \mu wbm^{-2}$ experiences a torque $1.2 \times 10^{-3}\;Nm$ What is the declination of the place?
cbse
class12
physics
ch-5
sec-a
q86
ncert
difficult
asked
Jul 21, 2015
by
meena.p
1
answer
Let $\bar {v}=2 \bar{i}+\bar {j}-\bar {k}$ and $\bar {w}=\bar {i}+3 \bar{k}$. If $ \bar u$ is any unit vector then the maximum value of the scalar triple product $(\bar {u} \; \bar {v}\; \bar {w})$ is
jeemain
eamcet
math
2011
q54
asked
Sep 23, 2013
by
meena.p
1
answer
The probability distribution of a random variable $X$ is given below :X=x 0 1 2 3 P(X=x) $\frac{1}{10}$ $\frac{2}{10}$ $\frac{3}{10}$ $\frac{4}{10}$ Then the variance of $X$ is
jeemain
eamcet
math
2011
q58
asked
Sep 23, 2013
by
meena.p
1
answer
Ask Question
Tag:
Math
Phy
Chem
Bio
Other
SUBMIT QUESTION
►
Please Wait
Take Test
JEEMAIN Crash Practice
15 Test Series
NEET Crash Practice
15 Test Series
JEEMAIN
350+ TESTS
NEET
320+ TESTS
CBSE XI MATH
50+ TESTS
CBSE XII MATH
80+ TESTS
...