Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

JEE Class main Answered

Find a vector which is perpendicular to both A and B but has a magnitude equal to that of B A=3i^-2j^,b=4i^+3j^-k^
Asked by Sunita | 01 Jun, 2019, 11:27: PM
answered-by-expert Expert Answer
Let's say C with rightwards harpoon with barb upwards on top  be the vector perpendicular to both A with rightwards harpoon with barb upwards on top space a n d space B with rightwards arrow on top and 
C with rightwards arrow on top equals A with rightwards harpoon with barb upwards on top cross times B with rightwards harpoon with barb upwards on top equals open vertical bar table row i j k row 3 cell negative 2 end cell 0 row 4 3 cell negative 1 end cell end table close vertical bar equals 2 i plus 3 j plus 17 k U n i t space v e c t o r space C with hat on top equals fraction numerator C with rightwards harpoon with barb upwards on top over denominator open vertical bar C with rightwards harpoon with barb upwards on top close vertical bar end fraction equals fraction numerator 2 i plus 3 j plus 17 k over denominator square root of 302 end fraction T h e space n e w space v e c t o r space h a s space m a g n i t u d e space e q u a l space t o t h e space m a g n i t u d e space o f space bold B with bold rightwards harpoon with barb upwards on top equals square root of 4 squared plus 3 squared plus 1 end root equals square root of 26 T h e r e f o r e space t h e space v e c t o r space w h i c h space i s space p e r p e n d i c u l a r space t o space b o t h space v e c t o r A space a n d space B space a n d space h a s space m a g n i t u d e space e q u a l space t o space B space i s fraction numerator square root of 26 open parentheses 2 i plus 3 j plus 17 k close parentheses over denominator square root of 302 end fraction
Answered by Utkarsh Lokhande | 02 Jun, 2019, 12:01: PM
Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
JEE main - Physics
please solve this question
question image
Asked by avhadbalaji2 | 24 Jan, 2024, 02:12: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
using the dimensional analysis derive the formula of pressure
question image
Asked by kartikchauhan2425 | 13 Jan, 2024, 05:37: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
If G,c and h are fundemantal constants of physics then which of the following combination gives us dimensions and time
question image
Asked by mvijithareddy67 | 13 Jan, 2024, 09:26: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
dimensional formula for resistence  
Asked by mages032006 | 26 Jun, 2023, 06:37: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
How to any sums in  physics using formulas?    
Asked by mahadhasyamvarshini | 05 Feb, 2023, 10:25: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
Why is the dimensional formula of Boltzmann constant and gas constant same
Asked by harshpandeykp20 | 18 Aug, 2021, 08:31: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
what is a unit
Asked by dharmesh21578 | 06 Jun, 2021, 04:36: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
Why money is not a physical quantity?  
Asked by narayanpauliit20 | 26 Apr, 2021, 11:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
the length,breath and thickness of a rectangular sheet of metal are 4.234 m , 1.005 m , and 2.01 cm respectively. Give area and volume of the sheet upto correct  significant figures.
Asked by manchanda.rohnit | 22 May, 2020, 01:24: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
JEE main - Physics
Find a vector which is perpendicular to both A and B but has a magnitude equal to that of B A=3i^-2j^,b=4i^+3j^-k^
Asked by Sunita | 01 Jun, 2019, 11:27: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×