Vector A=1i ^ -j^+2k^ and vector B = P i^-2k^+j^ are perpendicular for P equal to
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Answer:
-5
Explanation:
A. B=0
on solving we will get p to be equal to -5
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The resultant of two forces 1 and p is perpendicular to 1 and equal to 1. what is value of p and angle between them?
Resultant is 1. One force is also 1. They are perpendicular to each other. This implies angle between p and the 1 force is more than 90. Let us say it is 90 + a.
Resolving p , the one parallel to the 1 force is p sin a, the perpendicular one is p cos a.
Hence both are equal to one.
tan a = 1 hence a = 45. And p = √ 1+1) = √ 2.
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