The arrival rate for a certain waiting-line system obeys a poisson distribution with a mean of 0.5 unit per period. it is required that the probability of one or more units in the system not exceed 0.20. what is the minimum service rate that must be provided if the service duration is to be distributed exponentially?

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final