« 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 107 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?

The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.

Did you know?

There are more nerve cells in one human brain than there are stars in the Milky Way.

Did you know?

Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

Did you know?

Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.

A Biologist at Work A Biologist at Work
A HEUI injector from a Ford PowerStroke diesel engine. The grooves indicate the location of the ... A HEUI injector from a Ford PowerStroke diesel engine. The grooves indicate the location of the ...
Energy drinks Energy drinks
Chemistry work Chemistry work
Multitasking at work Multitasking at work
How did muscle work around eyeball? How did muscle work around eyeball?
Video: Dendrite Animation

For a complete list of videos, visit our video library