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

Author Question: If the current density in a wire or radius R is given by J = kr, 0 < r < R, what is the ... (Read 17 times)

nmorano1

  • Hero Member
  • *****
  • Posts: 598
on: Jul 29, 2018
If the current density in a wire or radius R is given by J = kr, 0 < r < R, what is the current in the wire?
 
  A) 2kR3/3
  B) 3kR3/2
  C) kR3/3
  D) kR2
  E) kR2/2

Question 2

The main reason for the large inefficiency of the automobile is
 
  A) the kinetic principle.
  B) friction in the moving parts.
  C) the first law of thermodynamics.
  D) the second law of thermodynamics.
  E) unburned hydrocarbons.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

lin77x

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

D


nmorano1

  • Member
  • Posts: 598
Reply 2 on: Jul 29, 2018
Wow, this really help

ghepp

  • Member
  • Posts: 361
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

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.

Did you know?

Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Current Positions of Known Dwarf Planets and SSSBs in the Outer Solar System Current Positions of Known Dwarf Planets and SSSBs in the Outer Solar System
In American Progress (1872), John Gast depicts a feminized (and eroticized) America moving westward, In American Progress (1872), John Gast depicts a feminized (and eroticized) America moving westward,
The more air and fuel that can be packed in a cylinder, the greater the density of the air–fuel ... The more air and fuel that can be packed in a cylinder, the greater the density of the air–fuel ...
Cell Grown in 15N and 14 N: Graph of Relative DNA Concentration Vs. the Density Cell Grown in 15N and 14 N: Graph of Relative DNA Concentration Vs. the Density
Withr this assumption, the maximum radius of M+ is Withr this assumption, the maximum radius of M+ is
Physics - Density, Pressure, and Pascal's Principle Physics - Density, Pressure, and Pascal's Principle
Video: Sister chromatids of a metaphase chromosome animation

For a complete list of videos, visit our video library