Hi I need help with these problems they are from calculus

16.8 Write each of the following in a correct form without using any negative exponents: a) 0.004562kNm m-3 K-1 b) 10 5 MNs ' m 3 K-1 c) 0.000473001 mJs-1 m-3 kg-1 16.9 Write each of the following in an acceptable form: a) 324 KJ/kg/K/m/s/m b) 43.098 Pakg / K/ m / s/ s c) 100 C/kg / K/m/sa) (2k - 3i)X 4k Solve the Cross Product: b ) ( 31 + 6] ) x ( - 21 + 6k ) = c) (67 - 42k) . (37 + 18]) d) (27 - 2]) . (27 - 2] + 4K) e). Calculate the cross product between a = (3,-3,1) and b = (4,9,2) f) a, b and c; are three vectors such that c is perpendicular to both a and b. What is the value of a x b X c?\f