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CBSE Class 11-science Answered

let angle beyween two nonzero vectors A bar and Bbar 120° and resultant be C bar
Asked by abhirathpatil1010 | 13 Mar, 2021, 02:38: PM
answered-by-expert Expert Answer
begin mathsize 14px style c with rightwards arrow on top space equals a with rightwards arrow on top space plus space b with rightwards arrow on top end style
Let begin mathsize 14px style open vertical bar a with rightwards arrow on top close vertical bar end style = OA ,  begin mathsize 14px style open vertical bar b with rightwards arrow on top close vertical bar end style = OB and begin mathsize 14px style open vertical bar c with rightwards arrow on top close vertical bar end style = OC
begin mathsize 14px style O C space equals space square root of O A squared space plus space O B squared space minus space 2 space cross times O A space cross times O B cross times space cos 60 end root end style
begin mathsize 14px style open vertical bar c with rightwards arrow on top close vertical bar space equals space square root of open vertical bar a with rightwards arrow on top close vertical bar squared plus space open vertical bar b with rightwards arrow on top close vertical bar squared space minus open vertical bar a with rightwards arrow on top close vertical bar open vertical bar b with rightwards arrow on top close vertical bar end root space end style
Answered by Thiyagarajan K | 13 Mar, 2021, 03:09: 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
please provide complete solution
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Asked by dhanshreekansyakar | 09 Jan, 2024, 11:57: AM
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CBSE 11-science - Physics
A×B where A= 2i-3j-k and B =i+4j-2k
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Asked by banhisikhapanda49 | 07 Nov, 2023, 10:42: PM
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CBSE 11-science - Physics
1.State paralogram law of vector addition and derive magnitude and the direction of a resultant vector  
Asked by preethiprithivi05 | 21 Feb, 2023, 09:28: 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 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 ?
Asked by aditya000ghoderao | 19 Jan, 2022, 05:05: AM
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