The vector having a magnitude of 10 and perpendicular to the vevtor 3i^-4j^ is??
Yuvraj Brar , 7 Years ago
Grade 11
Modern Physics> The vector having a magnitude of 10 and p...
1 AnswersVikas TU
Last Activity: 7 Years ago
Dear Student,
Give the vector we a chance to need to discover is A=ai+bj
let the vector given is B=3i-4j
for 2 vectors to be opposite the spot item should be 0.
A.B=0
=>(ai+bj).(3i-4j)=0
=>3a-4b=0
=>b=3a/4
|A|=√(a^2+b^2 )
=>a2+b2=100
=>a2+9a2/16=100
=>a=+-8
b=+-6
A=8i+6j or - 8i-6j or 8i-6j or - 8i+6j
Cheers!!
Regards,
Vikas (B. Tech. 4th year
Thapar University)
Thapar University)
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