ENGR 103 - Test 4 With Solution

ENGR 103 - Test 4 With Solution

Magnitude of a Vector: - ANSWER The components x,y,z squared and added
together under the square root. Think of pytha, theroem

The magnitude of a unit vector: - ANSWER 1 (it is always 1, no units)

Dot product yields what? - ANSWER A scalar quantity with units of the
product of A and B.

Work = Force * distance - ANSWER Only use this equation if the force is in
the direction of the displacement,




Scalars do not have ____ - ANSWER Units




Cross product - ANSWER Vectors of A x B




Right-hand rule (CCW) - ANSWER Positive values




Right-hand rule (CW) - ANSWER Negative values




I,j,k's (x,y,z) provides what? - ANSWER Direction

, Cross product will have answers in - ANSWER Vectors




Dot products will have answers in - ANSWER Scalars




If the question asks for direction, what do you find? - ANSWER The unit
vector, which is, the magnitude, and then the component divided by the
magnitude




If you have a vector, how do you find the direction or unit vector? - ANSWER
Take each component I,j,z and divide it by the magnitude of the vector




Do position vectors have units - ANSWER Yes




Cables ___ and not ____ - ANSWER Pull and not push. This is for vectors and
forces




R (Resultant Vector) means - ANSWER Adding the vectors together




Line of action goes to: - ANSWER Infinity




Can you move vectors along their line of action? - ANSWER Yes