« previous next »

Author Question: A certain automobile engine takes in 4.00 kJ of energy and performs 1.10 kJ of mechanical work in ... (Read 157 times)

KimWrice

  • Hero Member
  • *****
  • Posts: 579
on: Jul 29, 2018
A certain automobile engine takes in 4.00 kJ of energy and performs 1.10 kJ of mechanical work in each cycle. (a) Calculate the engine's efficiency. (b) How much thermal energy is wasted in each cycle?
 
  What will be an ideal response?

Question 2

A thermodynamic engine absorbs 64 kcal of energy each cycle and exhausts 42 kcal.
 
  (a) What is the efficiency of this engine?
  (b) How much work does this engine do per cycle?


zhanghao

  • Sr. Member
  • ****
  • Posts: 316
Reply #1 on: Jul 29, 2018
Answer to Question 1

(a) 27.5 (b) 2.90 kJ

Answer to Question 2

(a) 34 (b) 22 kcal


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

People who have myopia, or nearsightedness, are not able to see objects at a distance but only up close. It occurs when the cornea is either curved too steeply, the eye is too long, or both. This condition is progressive and worsens with time. More than 100 million people in the United States are nearsighted, but only 20% of those are born with the condition. Diet, eye exercise, drug therapy, and corrective lenses can all help manage nearsightedness.

Did you know?

ACTH levels are normally highest in the early morning (between 6 and 8 A.M.) and lowest in the evening (between 6 and 11 P.M.). Therefore, a doctor who suspects abnormal levels looks for low ACTH in the morning and high ACTH in the evening.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Carbon dioxide emission per gigajoule of energy released Carbon dioxide emission per gigajoule of energy released
A high-performance aftermarket air filter often can increase airflow into the engine for more ... A high-performance aftermarket air filter often can increase airflow into the engine for more ...
The engine is rotated until the timing marks on the front of the crankshaft line up with zero ... The engine is rotated until the timing marks on the front of the crankshaft line up with zero ...
The Energy Sector The Energy Sector
Energy drinks Energy drinks
A system absorbs 623 J of heat while doing 457 J of work. What is the value of U? A system absorbs 623 J of heat while doing 457 J of work. What is the value of U?
Video: Causes of Angina

For a complete list of videos, visit our video library