At sea level, where g=9.80 m/s^2, a pendulum has a period of 1.000s. When you take it to the top of a mountain, its period is 0.9990s. What is g at the top of the mountain? (Keep 4 significant figures.) (Unit=m/s^2)

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 =