During each cycle of operation, the thermal energy input to a ...

[B]

During each cycle of operation, the thermal energy input to a heat engine is 400 J and the exhaust is 300 J. This engine's efficiency is
 
  A) 50. B) 0. C) 75. D) 25. E) 100.

Question 2

According to the philosophical ideas associated with quantum theory,
 
  A) science describes the objective universe, uninfluenced by humans.
  B) microscopic particles form the fundamental reality.
  C) microscopic particles do not have precise positions or velocities.
  D) All of the above.
  E) None of the above.

[brittiany.barnes]

Answer to Question 1

D

Answer to Question 2

C