1) An airplane flies from Manila to Cebu (1031 km) for 94 minutes when no wind blows. On a day with a tailwind, the plane makes the trip in 70 minutes. What is the wind speed in km/hr? 2) Planet X is rotating on its axis every 5332 hour. What is the angular speed of Planet X in every rad/s?

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 =