1.Hummingbird moths are night-flying insects whose behavior and appearance are similar to those of hummingbirds. Explain how thes two organisms demonstrate the concept of convergent evolution.?
2.a quantty of a gas equal to 3.5 cu ft is to be expanded adiabatically. it has specific heat at constant pressure of 0.532 and at constant volume of 0.48. what is the value of the exponential power k?
3.a volume of 20 cu ft of air at pressure of 50 psig is heated and expanded to 30 cu ft and 40psig find the change in the energy of air in joules