Both the moon and the sun influence the tides on earth. the moon has a much greater influence though. why is that? a) because the sun is much less dense b) because the sun is gaseous, not solid c) because the sun is so far away from earth d) because the sun is less massive than the moon

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 =