*1-12. Convert each of the following and express the answer using an appropriate prefix: (a) 175 lb/ft to kN/m, (b) 6 ft/h to mm/s, and (c) 835 lb- ft to

kN- m. Define a "Couple" moment Define the moment of a force F about a fixed point "0" If A = 3i +3j+4k and B6j -8k What is the dot (scalar) product A·B?