Engineering, 12.12.2019 06:31 mgavyn1052
(a)compute the electrical conductivity of a cylindrical silicon specimen 7.0 mm (0.28 in.) diameter and 57 mm (2.25 in.) in length in which a current of 0.25 a passes in an axial direction. a voltage of 24 v is measured across two probes that are separated by 45 mm (1.75 )compute the resistance over the entire 57 mm (2.25 in.) of the specimen.
Answers: 3
(Ω-m)^{-1}
![\sigma = \frac{0.25 \times 45\times 10^{-3}}{24 \pi [\frac{7 \times 10^{-3}}{2}]^2}](/tpl/images/0414/9819/138b2.png)
(Ω-m)^{-1}[/tex]
![= \frac{57 \times 10^{-3}}{12.2 \times \pi [\frac{7 \times 10^{-3}}{2}]^2}](/tpl/images/0414/9819/028ba.png)
Another question on Engineering
Engineering, 04.07.2019 08:10
Which of the following is an easy way to remember the modified “x” tire rotation? a. nondrive wheels straight, cross the drive wheels b. drive wheels straight, cross the nondrive wheels c. drive wheels crossed, nondrive wheels straight d. drive wheels crossed, nondrive wheels crossed
Answers: 1
Engineering, 04.07.2019 18:10
Which from the following instrument is commonly used to detect the high pitch butzing sound in bearings? [clo4] a)-digital ultrasonic meter b)-infrared camera c)-spectroscopic d)-vibrometer
Answers: 2
Engineering, 04.07.2019 18:20
What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.
Answers: 3
Engineering, 04.07.2019 18:20
Modern high speed trains do not have perpendicular expansion gaps where rails are joined end-to-end any more they are mostly welded together but what might happen if there was a spell of particularly hot weather that causes inspection of the tracks?
Answers: 1
You know the right answer?
(a)compute the electrical conductivity of a cylindrical silicon specimen 7.0 mm (0.28 in.) diameter...
Questions
Mathematics, 13.12.2019 06:31
Business, 13.12.2019 06:31
English, 13.12.2019 06:31
Geography, 13.12.2019 06:31
Physics, 13.12.2019 06:31
Chemistry, 13.12.2019 06:31
Mathematics, 13.12.2019 06:31
Mathematics, 13.12.2019 06:31
Mathematics, 13.12.2019 06:31
Mathematics, 13.12.2019 06:31
Mathematics, 13.12.2019 06:31
