« previous next »

Author Question: Conventional automobile efficiencies cannot conceivably be higher than about 25, even with perfect ... (Read 11 times)

FButt

  • Hero Member
  • *****
  • Posts: 519
on: Jul 29, 2018
Conventional automobile efficiencies cannot conceivably be higher than about 25, even with perfect engineering. This is due to
 
  A) the law of conservation of energy.
  B) frictional loses inside the car plus unburned hydrocarbons.
  C) the second law of thermodynamics.
  D) road friction.
  E) air resistance plus road friction.

Question 2

Roughly how many different elements are there?
 
  A) 1000
  B) 20
  C) many more than 1000
  D) 100
  E) 4


Pswine

  • Sr. Member
  • ****
  • Posts: 328
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

D


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

FButt

  • Hero Member
  • *****
  • Posts: 519
Reply #2 on: Jul 29, 2018
TY


Pswine

  • Sr. Member
  • ****
  • Posts: 328
Reply #3 on: Jul 29, 2018
You're welcome


« previous next »
 

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

Cutaneous mucormycosis is a rare fungal infection that has been fatal in at least 29% of cases, and in as many as 83% of cases, depending on the patient's health prior to infection. It has occurred often after natural disasters such as tornados, and early treatment is essential.

Did you know?

Certain rare plants containing cyanide include apricot pits and a type of potato called cassava. Fortunately, only chronic or massive ingestion of any of these plants can lead to serious poisoning.

Did you know?

More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

IQ and Genetics The closer the genetic relationship, the higher the correlation in IQ. Based on: Br IQ and Genetics The closer the genetic relationship, the higher the correlation in IQ. Based on: Br
Conscientiousness is negatively correlated with a number of health-related behaviors. The higher the ... Conscientiousness is negatively correlated with a number of health-related behaviors. The higher the ...
A typical camshaft-driven high-pressure pump used to increase fuel pressure to 2,000 PSI or higher. A typical camshaft-driven high-pressure pump used to increase fuel pressure to 2,000 PSI or higher.
Higher-Level Thinking Skills Used in Massage Therapy Higher-Level Thinking Skills Used in Massage Therapy
The demand for oil can be reduced significantly with the introduction of new higher vehicle mileage The demand for oil can be reduced significantly with the introduction of new higher vehicle mileage
An antique automobile bumper is to be chrome plated. The bumper, which is dipped into an acidic ... An antique automobile bumper is to be chrome plated. The bumper, which is dipped into an acidic ...
Video: Action potentials - electrical characteristics and generation

For a complete list of videos, visit our video library