Lili pulls a 6.00-kg crate across a horizontal floor for a distance of 3.00 m as shown. The tension force in the rope is 86 N and the angle is 30.0 with respect to the horizontal. The frictional force on the crate is 12.0 N. Assuming the system is crate+earth+floor, match the answers with questions. K + Ug + Usp + Eth + Ech = Wexternal - What is the change in gravitational potential energy (Ug)? - What is the change in thermal energy (Eth)? - What is the change in kinetic energy (K)? - What is the work done by the external force (Wexternal)? A. -223 J B. -36 J C. -187 J D. 259 J E. 187 J F. none of the given G. 223 J H. 36 J I. 0 J