What is the efficiency of a heat engine that produces 4, 200 J of work when 8,950 J are input? Would this machine be considered efficient?

s the environmental science is a broader field that incorporates many elements of earth and life sciences, whereas ecology is usually more focused on how organisms interact with each other and their surroundings, and often on a very specific population of living things. soo yea

explanation:

u=13

v=30

s/t=u+1\2at

=13+431/2

=13+265.5

=278.5