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What is the physical difference between cross product and dot product?Why do we need dot product?

What is the physical difference between cross product and dot product?Why do we need dot product?

Grade:11

4 Answers

suryakanth AskiitiansExpert-IITB
105 Points
11 years ago

Dear Nitin,

The Physical difference between cross product and dot product is

In simple sense we can say ...we describe of a unknown vector with the help of known 2 vectors... and of characteristic... perpendicular to both vectors..

Dot product is to define a vector in the same direction.

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Souradeep Majumder
80 Points
11 years ago

dot product is used for scalaar product................... it is mainly used to find work related problem.........................  dot product is  vector product...................................

 

please approve my answer.......................

sai nath reddy pemmaka
34 Points
11 years ago

cross product is a vector,where as  dot product is scalar

arpit burad
16 Points
11 years ago

the difference bw cross product and dot product of two vectors is as follows

1.)first is a vector while latter is a scalar quantity.

2.)FIRST IS PERPENDICULAR TO GIVEN VECTORS WHILE OTHER ONE HAS NO DIRECTION.

3.)FIRST  IS DEFINED AS ABsin#n^  where n^ is a unit vector perpendicular to a*b\

     latter is defined abcos#

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