If A = 3a, + 2ag - 6a, and B = 4a, + 3a, determine (a) A B (b) A X B (c) The vector component of A along a, at (1, 7/3, 5/4)

Which of the following distribution systems would you select for a medical research campus? A) Primary selective system. C) Secondary loop system. B) Distributed radial system. D) Primary and secondary loop system. Authoritative rules for electrical design and installation are contained in which of the following 7) documents? A) ASHRAE Handbook of Fundamentals. B) NFPA 101. C) NEC. The illumination from a point source 4 ft. above a surface is 100 foot-candles, and the surface is normal to the source. What will be the illumination level if the surface is tilted 45°? A) 50 foot-candles. B) 100 foot-candles. C) 71 foot-candles. Which of the following lamp types is generally the most energy efficient? A) Incandescent. C) High intensity discharge. B) LED. D) Fluorescent.

Please answer all subpart All is compulsory please

Answer question clearly and fully. Make sure I can properly read out the steps. Include any and all equations used during the solving process.