This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A common car engine is 20 efficient. When cruising, the car encounters an average retarding force of ... (Read 53 times)

renzo156

  • Hero Member
  • *****
  • Posts: 526
on: Jul 29, 2018
A common car engine is 20 efficient. When cruising, the car encounters an average retarding force of 1000 N. If the energy content of gasoline is 40 MJ/L, how many kilometers per liter does the car achieve?
 
  A) 14 km/L
  B) 12 km/L
  C) 10 km/L
  D) 8 km/L
  E) none of the above

Question 2

Why is Isaac Newton sometimes said to have united the heavens and Earth?
 
  A) Because he caused the scientific community to accept the idea that Earth is just one planet orbiting the sun like the other planets.
  B) Because Newton's law of conservation of energy seems to apply throughout the universe.
  C) Because he discovered that the energy processes that power the sun also operate on Earth.
  D) Because Newton's law of gravity seems to apply throughout the universe.
  E) Because of the fact that there are no exceptions to the laws of thermodynamics.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Athena23

  • Sr. Member
  • ****
  • Posts: 305
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: D

Answer to Question 2

D


renzo156

  • Hero Member
  • *****
  • Posts: 526
Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


Athena23

  • Sr. Member
  • ****
  • Posts: 305
Reply #3 on: Jul 29, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Bay (left) and chestnut (sometimes called "sorrel") are two of the most common coat colors Bay (left) and chestnut (sometimes called "sorrel") are two of the most common coat colors
The wolf spider, Lycosa godeffroyi, is common in many areas of Australia. In this family of spiders, The wolf spider, Lycosa godeffroyi, is common in many areas of Australia. In this family of spiders,
An engine in good mechanical condition should produce 17 to 21 inches Hg of vacuum at idle at sea ... An engine in good mechanical condition should produce 17 to 21 inches Hg of vacuum at idle at sea ...
Weak valve springs will produce a normal reading at idle, but as engine speed increases, the needle ... Weak valve springs will produce a normal reading at idle, but as engine speed increases, the needle ...
The Coriolis Force The Coriolis Force
Pressure gradient force Pressure gradient force
Video: Cellular Defects - Osteoblasts, Osteoclasts and Osteocytes

For a complete list of videos, visit our video library