Athermocouple, with a spherical junction diameterof 0.5 mm, is used for measuring the temperature of hot airflow in a circular duct. the convection heat transfer coefficient of the air flow can be related with the diameter (d) ofthe spherical junction and the average air flow velocity (v)as h 5 2.2(v/d)0.5, where d, h, and v are in m, w/m2? kand m/s, respectively. the properties of the thermocouple junction are k 5 35 w/m? k, r 5 8500 kg/m3, and cp 5320 j/kg? k. determine the minimum air flow velocity thatthe thermocouple can be used, if the maximum responsetime of the thermocouple to register 99 percent of the initial temperature difference is 5 s.

[05.02] what is the best explanation of the kinetic molecular theory as it relates to the energy of the molecules in the states of matter? (1 point) the molecules in a gas have greater kinetic energy than those in a liquid, which in turn have greater kinetic energy than the molecules in a solid. kinetic energy cannot be created nor destroyed, and, as a result, all states of matter have the same kinetic energy. the molecules in a gas have greater kinetic energy; therefore, they are more tightly packed than the molecules in either a liquid or a solid. the molecules in gases and liquids, in constant motion, have greater kinetic energy than those in a solid, which do not move or vibrate because their position is fixed.