This program extends the earlier "online shopping cart" program. (consider first saving your earlier program). (1) extend the itemtopurchase class to contain a new attribute. (2 pts) item_description (string) - set to "none" in default constructor implement the following method for the itemtopurchase class. print_item_description() - prints item_description attribute for an itemtopurchase object. has an itemtopurchase parameter.

Acarnot refrigerator operates in a room in which the temperature is 21°c and of power when operating. if the food compartment of the refrigerator is consumes 3 kw to be maintained at 2°c, determine (a) the coefficient of performance of the cycle and (b) the rate of heat removal from the food compartment. refrigerator cycle that has a higher coefficient of performance than that of the discussed (e) is it possible to develop a carn ot refrigerator, operating between the same temperature limits? explain