Question
Please help me giving the answer
Given two vectors A right arrow = 2i^ - 2j^ + 3k^ and B rightarrow = i^ + 2j^ + 2k^, the dot product A rightarrow B rightarrow is equal to: Two vectots A rightarrow and B rightarrow are given as shown in the figure. The magnitude of the resultant R rightarrow is: Equal to arithmetic sum of magnitudes A and B Greater than the arithmetic sum of magnitudes A and B Greater than either A or B but less than the arithmetic sum of magnitudes A and B Greater than the vector sum of A rightarrow and B rightarrow Part of a nail is sticking out of the wall at A in the x-direction, and force F rightarrow is applied to the nail, as shown in the figure. From the information provided it is possible to determine (select all correct choices} The angle between the force and the nail The maximum bending moment at A The magnitude of the force pushing the nail in the wall The insertion distance of the nail A force is applied to the eyebar as shown in the figure. The moment of the force F about A is equal to: 150 N.m 50 N.m 75 N.m 100 N.m
Explanation / Answer
A. b
B. c
C. a, c
D. a