Sample Problem 2.8The viscosities of a material at various temperatures are givenbelow:Temperature, °C020406080100.....Viscosity, n, poises..2×10¹¹.3×10⁹3.5×1085x1042×10³---2×10²a) Draw a curve showing the relation log n and 1/T in Kelvindegrees.b) By using the curve asked in (a), estimate the energy ofactivation of viscous flow for a temperature range between20°C and 40°C.

The viscosities of a material at various temperatures are given below: Temperature, C 0 20 40 60 80 100 Viscosity, n, poises .....2×10¹¹ .3×10⁹ .....3.5×108 .....5×104 2×10³ ....2×10² a) Draw a curve showing the relation log n and 1/T in Kelvin degrees. b) By using the curve asked in (a), estimate the energy of activation of viscous flow for a temperature range between 20°C and 40°C.

The viscosities of a material at various temperatures are given below: Temperature, C 0 20 40 60 80 100 Viscosity, n, poises .....2×10¹¹ .3×10⁹ .....3.5×108 .....5×104 2×10³ ....2×10² a) Draw a curve showing the relation log n and 1/T in Kelvin degrees. b) By using the curve asked in (a), estimate the energy of activation of viscous flow for a temperature range between 20°C and 40°C.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Properties of Fluids

The term fluid represents a type of substance that can easily change its shape under any external pressure/force and can flow. Fluids can acquire any shape in which it is stored and can resist normal stresses but cannot resist shear stress in rest condition. Whenever external shear stress is applied to fluids, it starts to flow. The fluids may be liquid or gas. Example- water, air, etc.

Question

Sample Problem 2.8
The viscosities of a material at various temperatures are given
below:
Temperature, °C
0
20
40
60
80
100
.....
Viscosity, n, poises
..2×10¹¹
.3×10⁹
3.5×108
5x104
2×10³
---2×10²
a) Draw a curve showing the relation log n and 1/T in Kelvin
degrees.
b) By using the curve asked in (a), estimate the energy of
activation of viscous flow for a temperature range between
20°C and 40°C.

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