Which would be best categorized as heat transfer by convection?
a) wearing a white shirt to stay cool on a summer day.
b) noodles rising and falling in a pot of boiling water
c) touching a metal spoon that is sitting in a pot of boiling water
eliminate
d) using a heating blanket to get warm

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)