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

Author Question: A Tungsten w ire is 1.50 m long and has a diameter of 1.00 mm. At 20.C a current of 50. mA flows ... (Read 16 times)

jwb375

  • Hero Member
  • *****
  • Posts: 540
on: Jul 27, 2018
A Tungsten w ire is 1.50 m long and has a diameter of 1.00 mm. At 20.C a current of 50. mA flows through the wire. =5.6  10-8   m; =0.0045(C)-1
 
  (a) Determine the potential across the wire.
  (b) If the wire temperature increases by 100. C, what potential is now required to produce a current of 50. mA?

Question 2

Which scientist built a radio transmitting tower at the turn of the 20th century and claimed that he was receiving interplanetary communications with it?
 
  A) Guglielmo Marconi
  B) Thomas Edison
  C) Nikola Tesla
  D) Grote Reber


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

atrochim

  • Sr. Member
  • ****
  • Posts: 331
Reply #1 on: Jul 27, 2018
Answer to Question 1

(a) 5.4 mV
(b) 7.8 mV

Answer to Question 2

C


jwb375

  • Member
  • Posts: 540
Reply 2 on: Jul 27, 2018
YES! Correct, THANKS for helping me on my review

nanny

  • Member
  • Posts: 313
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

Asthma-like symptoms were first recorded about 3,500 years ago in Egypt. The first manuscript specifically written about asthma was in the year 1190, describing a condition characterized by sudden breathlessness. The treatments listed in this manuscript include chicken soup, herbs, and sexual abstinence.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).

Did you know?

All adults should have their cholesterol levels checked once every 5 years. During 2009–2010, 69.4% of Americans age 20 and older reported having their cholesterol checked within the last five years.

This Black-browed Albatross has been hooked on a long-line. This Black-browed Albatross has been hooked on a long-line.
Energy flows in a typical gasoline-powered car Energy flows in a typical gasoline-powered car
Role of PKM-zeta in Long-Lasting Long-Term Potentiation Role of PKM-zeta in Long-Lasting Long-Term Potentiation
A photograph of Commodore Matthew Perry in 1855 juxtaposed with a Japanese portrait of him. When Per A photograph of Commodore Matthew Perry in 1855 juxtaposed with a Japanese portrait of him. When Per
When young infants hold objects for a long period of time they eventually become habituated to them. When young infants hold objects for a long period of time they eventually become habituated to them.
Long bone formation Long bone formation
Video: baroreceptors

For a complete list of videos, visit our video library