Question

A vector is represented by 3i+j+2k . It's Length in XY plane is
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Answer 1

Answer:

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Explanation:

This is a pretty straightforward question. The length of a vector is nothing but it’s magnitude.

The given vector has components of 3, 1, respectively in the x and y directions. To determine its length we require it’s projection in the x-y plane. For this the x and y components should be sufficient.

It’s magnitude or length in a given plane is determined by:

x2+y2−−−−−−√  

where x and y denote the x and y components respectively.

Plugging in the values, the output obtained is:

32+12−−−−−−√  

which is:

3.16227766017

Answer 2

Explaination :

Length = Magnitude=√3^2+1^2

=√9+1

=√10

I HOPE ITS HALPFULL..