Find magnitude of ā = 3î + 4ĵ:
A5
B4
C7
D3
Answer & Solution
Correct answer: A. 5
|ā| = √(3² + 4²) = √(9+16) = √25 = 5.
Related questions
The result a cross b is a:The area of a triangle from its three vertices can be found using:The area of a parallelogram with sides a and b uses the magnitude of their:For mutually perpendicular unit vectors, i cross j equals:The cross product of two nonzero vectors is zero when they are:The angle between two vectors can be found in terms of their:The vector product is an operation that is:The scalar product is an operation that is: