Posted by Abdela said yimer on Saturday, January 28, 2012 at 7:25am.
Suppose vector A=3i2j, B= i4j and vector C are three vectors in xy plane with the property that vectors A+BC. What is the unit vector along vector C?

physics  drwls, Saturday, January 28, 2012 at 7:37am
Don't you mean that A + B = C ?
A + B  C is not a property. It is a vector that depends upon what C is.
A "unit vector along C" will depend upon how C is defined. It will be a combination of i and j. It is hard to believe they are really asking for that.

physics  Damon, Saturday, January 28, 2012 at 8:52am
I bet Dr WLS is right and that  sign should be an = sign
making that assumption:
A + B = C = 2 i  6 j
so
we need a unit vector in the C direction
Find magnitude of i  3 j which is in C direction
sqrt (1^2 + 3^2) = sqrt (10)
so
(1/sqrt 10) i  (3/sqrt 10) j
Answer This Question
Related Questions
 Mamthematics  Vectors  a) If vector u and vector v are noncollinear vectors ...
 Math  vectors  In the product F(vector)=q(V(vector)xB(vector), take q = 4, V(...
 calculus  State whether or not the following statements are true. Justify your ...
 cartesian vectors 2  let vector U = (vector u1, vector u2) vector V = (vector ...
 physics [vectors]  The concept i get, but somehow i just can't execute this ...
 Vectors  Verify using an example that Vector a + (Vector b • Vector c) is not ...
 Vectors  Use a specific example to prove that the cross product is also not ...
 Vectors  Verify using an example that Vector a + (Vector b • Vector c) is not ...
 Vectors  Verify (Vector a + Vector b) × (Vector a + Vector b) = 0⃗ . What...
 Prabhat academy  If vector a & vector b are unit vectors ,then what is the ...
More Related Questions