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
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
