The scalar product of two perpendicular vectors is always _______.

A. equal to 1

B. greater than 1

C. less than 1

D. equal to 0

1.85 .. You are given vectors A = 5.0î – 6.5ị and B = 3.5î – 7.0ſ. A third vector, Č, lies in the xy-plane. Vector C is perpendicular to vector A, and the scalar product of Č with B is 15.0. From this information, find the components of vector C.

A 0.13 kg meter stick is held perpendicular to a wall by a 3.0mstring going from the wall to the far end of the stick.

(a) Find the tension in the string.
1 in N
(b) If a shorter string is used, will its tension be greaterthan,less than, or the same as that found in part (a)?

2

greater than or less than or the sameas

(c) Find the tension in a 1.5 m string.
3in N

The magnitude of a component of a vector must be

(a) less than or equal to the magnitude of the vector.

(b) equal to the magnitude of the vector.

(c) greater than or equal to the magnitude of the vector.

(d) less than, equal to, or greater than the magnitude of the vector.