15 An engineer places his 6.9 kg reference book on his drafting desk which currently sits at an inclined angle of 0 = 11.0 degrees. Calculate the magnitude of the normal force exerted on the book by the desk. (Round your answer to the nearest tenth of a Newton) 66.3 0 PHY-TD2 1. Read each question carefully. 2. For MCQs, select the best/most appropriate answer to the question. 3. Round your answers to the nearest whole number unless otherwise instructed. Watch out for Rounding Error. 4. You have unlimited attempts to achieve your best score. x=x0+ vot+at v=vo+at v2v+2a (x-x0) = SF-ma F-Fx Surfaces Wood on Concrete Wood on Ice Wood on Metal Wood on Snow Wood on Stone Static Kinetic (14) (14+) 0.62 0.30 0.05 0.02 0.40 0.20 0.14 0.10 0.40 0.30