Heat transfer in liquid and gases takes place by_____________________?

A. temperature
B. wave length
C. physical nature
D. all of the above
E. none of the above

A. 0.45
B. 0.55
C. 0.40
D. 0.75
E. 0.60

A. increases
B. decreases
C. remains constant
D. may increase or decrease depending on temperature
E. unpredictable

A. kcal/kg m2 °C
B. kcal-m/hr m2 °C
C. kcal/hr m2 °C
D. kcal-m/hr °C
E. kcal-m/m2 °C