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 17 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
Thanks for the timely response, appreciate it

sultana.d

  • Member
  • Posts: 320
Reply 3 on: Yesterday
Wow, this really help

« previous next »
 

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

On average, the stomach produces 2 L of hydrochloric acid per day.

Did you know?

The FDA recognizes 118 routes of administration.

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.

Did you know?

Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.

This Black-browed Albatross has been hooked on a long-line. This Black-browed Albatross has been hooked on a long-line.
The rate of evolution in short­ and long­lived plants The rate of evolution in short­ and long­lived plants
The Long Valley Caldera Erupted the Bishop Ash 760,000 Years Ago The Long Valley Caldera Erupted the Bishop Ash 760,000 Years Ago
A current model for protein secretion by prokaryotes A current model for protein secretion by prokaryotes
Find the voltage, current and power for each resistor in the circuit below Find the voltage, current and power for each resistor in the circuit below
Experiments showing that long- or short-day plants flower in response to night length. Each horizont Experiments showing that long- or short-day plants flower in response to night length. Each horizont
Video: Stress and Immune System Animation

For a complete list of videos, visit our video library