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CBSE Class 11-science Answered

A particle moves in XY plane with velocity given by v = (8t-2)i + 2j where t in sec gives v in m/s . If it passes through the point (14m,4m) at t=2 sec , then the equation of path of particle will be ? 
Asked by arunavamitra50 | 02 Jul, 2018, 06:38: PM
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begin mathsize 12px style v left parenthesis t right parenthesis space equals space fraction numerator d r over denominator d t end fraction space equals space fraction numerator d x over denominator d t end fraction i with rightwards arrow on top space plus space fraction numerator d y over denominator d t end fraction j with rightwards arrow on top space equals space left parenthesis 8 t minus 2 right parenthesis i with rightwards arrow on top space plus space 2 j with rightwards arrow on top fraction numerator d x over denominator d t end fraction space equals space open parentheses 8 t space minus space 2 close parentheses space semicolon space space x left parenthesis t right parenthesis space equals space integral open parentheses 8 t space minus space 2 close parentheses d t space equals space 4 t squared space minus space 2 t space plus C w h e n space t space equals space 2 comma space x space equals space 14 space m comma space h e n c e space C space equals space 2 space semicolon space space space x left parenthesis t right parenthesis space equals space 4 t squared minus 2 t space plus space 2 space equals space 2 left parenthesis 2 t squared minus t plus 1 right parenthesis fraction numerator d y over denominator d t end fraction equals space 2 semicolon space y left parenthesis t right parenthesis space equals space integral 2 d t space equals space 2 t plus C w h e n space t equals 2 comma space y space equals space 4 space m comma space h e n c e space C space equals 0 space a n d space y left parenthesis t right parenthesis space equals space 2 t e q u a t i o n space o f space p a t h comma space r left parenthesis t right parenthesis space equals space 2 left parenthesis 2 t squared minus t plus 1 right parenthesis space i with rightwards arrow on top space plus space 2 t space j with rightwards arrow on top end style
Answered by Thiyagarajan K | 03 Jul, 2018, 03:45: PM
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CBSE 11-science - Physics
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Asked by sheikhsaadat24 | 17 Apr, 2024, 09:41: PM
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CBSE 11-science - Physics
.A SHM is expressed by the equation x = A cos (ωt + φ) and the phase angle φ =0. Draw graphs to show variation of displacement, velocity and acceleration for one complete curve in SHM.
Asked by sy123946 | 07 Apr, 2024, 04:23: PM
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CBSE 11-science - Physics
the dimension of stopping potential vo in photoelectric effect in units of plank's constant 'h',speed of light 'c' and gravitational constant 'G' and ampereA
Asked by derhebha955 | 03 Apr, 2024, 09:03: AM
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CBSE 11-science - Physics
In this que while solving it we take D F of alpha =D.F of beta.Why is it so?
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Asked by sumedhasingh238 | 29 Mar, 2024, 05:15: PM
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CBSE 11-science - Physics
In physics if 2 quantities are dimensionless then their dimensional formula are equal?
Asked by sumedhasingh238 | 28 Mar, 2024, 11:10: PM
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CBSE 11-science - Physics
7. State the relation between maximum range and maximum height of the projectile if the angle of projection is 45 deg
Asked by roshnibudhrani88 | 23 Mar, 2024, 05:52: PM
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CBSE 11-science - Physics
The second overtone of a pipe closed at one end has the same frequency as the third overtone of a pipe open at both ends. Compare the length of the pipes
Asked by emad.amd | 21 Mar, 2024, 12:00: PM
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CBSE 11-science - Physics
two forces whose magnitude are in the 3:5 give a resultant f Jatio 3:5 give 20 N. If fac 20. It fue angle of thread indination of each face find Magnitude
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Asked by vinitdubey7735 | 14 Mar, 2024, 11:21: AM
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CBSE 11-science - Physics
Q17. The velocity time relation of an electron starting from rest is given by v = kt where k = 6m / (s ^ 2) Calculate the distance traversed in 2 sec. 122
Asked by om636694 | 04 Mar, 2024, 09:10: PM
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CBSE 11-science - Physics
pressure of a gas in a closed cylinder is expressed in the following manner p=pa+hpg identity the expression for absolute pressure and gauge pressure
Asked by rajuinwati12 | 04 Mar, 2024, 09:22: AM
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