An electric device has an energy efficiency of 27%. It consumes 8,600) of electrical energy and converted a part of it into mechanical energy. How much energy is
wasted by producing other forms of energy?

Answers:

6,278J
2,333J
8,600J
319J

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.

the answer you are looking for is d. there are no holes for blood to enter or leave the system. your welcome