1.48: a) 1 3 1 1 1 ˆ ˆ ˆ 2 2 2 ≠ = + + = + + k j i so it is not a unit vector b) 2 2 2 z y x A A A + + = A If any component is greater than + 1 or less than –1, 1 ≥ A , so it cannot be a unit vector. A can have negative components since the minus sign goes away when the
This is the end of the preview. Sign up
access the rest of the document.
This homework help was uploaded on 02/14/2008 for the course PHYS 112 taught by Professor Wheeler during the Spring '08 term at Cornell.