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Vectors

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23 Apr 2009 19:09:47 IST

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Q1:The value of i*(r*i) + j*(r*j) +k*(r*k) is (in terms of r):Q2: The force determined by the vector

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Q1:The value of i*(r*i) + j*(r*j) +k*(r*k) is (in terms of r):Q2: The force determined by the vector = (1, -8, -7) is resolved along three mutually perpendicular directions , one of which is the direction of the vector a=2i+2j+k. Then the vector component of the force in the direction of the vector a is :

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Sagar Saxena

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Joined: 8 Oct 2008

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23 Apr 2009 21:12:44 IST

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put r = x i + y j + z k in the first question.u will get the answer

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