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CBSE Class 11-science Answered

<div>Q)A horizontal force F is applied to a body of weight mg resting on a frictionless inclined plane to prevent it from sliding down.The plane makes an angle of&nbsp;<img class="Wirisformula" src="https://images.topperlearning.com/topper/tinymce/integration/showimage.php?formula=a15939607442ba42b3d2a4c9546b49f5.png" alt="empty set space w i t h space t h e space h o r i z o n t a l. t h e n space p r o v e space t h a t space t h e space n o r m a l space r e a c t i o n space a c t i n g space o n space t h e space b o d y space s a t i s f i e s space t h e space c o n d i t i o n space&#10;N equals open curly brackets open parentheses m g close parentheses squared plus F squared close curly brackets to the power of 1 half end exponent" align="middle" /></div>
Asked by araima2001 | 05 Sep, 2016, 07:00: AM
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Answered by Abhijeet Mishra | 06 Sep, 2016, 03:24: PM

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CBSE 11-science - Physics
A particle is projected from a point P with a velocity v at an angle θ with horizontal. At a certain point Q it moves at right angles to its initial direction. Then (a) velocity of particle at Q is vsintheta (b) velocity of particle at Q is Vtantheta (c) time taken from P and Q is v/g sin theta (d) time taken from P and Q is v/gsectheta
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CBSE 11-science - Physics
Que: Equal and opposite charges cancel out eachother's effect then why doesn't centrifugal force cancel out centripetal force's effect on a particle moving in circular motion?
Asked by advssdrall | 07 Oct, 2022, 11:11: PM
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CBSE 11-science - Physics
What do your understatnd by (1)position vector and (ii) displancment vector. Distinguish them with illustration.
Asked by rk274268 | 05 Aug, 2022, 01:19: PM
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CBSE 11-science - Physics
what is dot product
Asked by Kattaithihaas | 24 Jul, 2022, 01:23: PM
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CBSE 11-science - Physics
a boat's speed in still water is 20km/h .if the boat is to travel directly across a river whose current has a speed of 12km/h ,at what upstream angle must the boat head?
Asked by pawankumardas15492 | 22 Jul, 2022, 10:24: PM
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CBSE 11-science - Physics
A baseball is hit by a bat and given a velocity of 40.0m/s at an angle of 30 degree above the horizontal. The height of the ball above the ground upon impact with the bat is 1.0 m  a) what maximum height above the ground does the wall reached b) a feilder is 110.0 m from home plate with the ball is hit and the balls trajectory is directly at home if he begins running at the moment the ball is hit and catches the ball. when it is still 3.0 m above the ground. How long does he run before catching the ball. C) how fast does he have to run in order to catch the ball
Asked by lonese3325 | 12 Jun, 2022, 01:42: PM
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CBSE 11-science - Physics
A particle is located at 5i^ +6j^ + 7k^ at t=0.. After 5 seconds, it is located at 2i^+5j^ +5k^. The magnitude of displacement of  the particle in XY plane is: ???
Asked by nutankumari95074 | 11 Jun, 2022, 05:24: PM
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CBSE 11-science - Physics
if |A|=|B|=|A-B|, then find the angle b/w the two vectors
Asked by kaziryan.05 | 13 Apr, 2022, 09:01: PM
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CBSE 11-science - Physics
how to find component of vector ?
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CBSE 11-science - Physics
A particle of mass m is given speed u at angle theta at topmost point It breaks into two equal parts one comes to rest  find point of landing of second mass
Asked by ashishgarud539 | 15 Dec, 2021, 04:12: PM
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