1) a roller coaster at an amusement park goes from the top of a tall hill to the bottom. during this time, the roller coaster a) gains both potential and kinetic energy b) loses both potential and kinetic energy c) loses kinetic energy and gains potential energy d) loses potential energy and gains kinetic energy

Complete the statement about memory improvement. ( )involves organizing and breaking down information into easier groups to expand capacity. rehearsal is the verbal repetition of information. these techniques are especially important for the improvement of ( ) memory.

Why are graphs useful when interpreting data

Consider the growth of a 20-nm-diameter silicon nanowire onto a silicon wafer. the temperature of the wafer surface is maintained at 2400 k. assume the thermal conductivity of the silicon nanowire is 20 wm-1k-1 and all its surfaces including the tip are subjected to convection heat transfer with the coefficient h = 1×105 wm-2k-1 and t∞ = 8000 k. when the nanowire grows to l = 300 nm, what is the temperature of the nanowire tip (t (x =