A cylindrical tube has an inner radius of r1 and an outer radius of r2. Using the heat equation, derive an expression for the st
eady-state temperature distribution across the thickness of the tube wall, if the heat flux and temperature on the inner surface of the tube are q1" and T1, respectively. There is no heat generation within the tube wall.
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Answer:
Explanation:
We are given that
Electric field =
We have to find the ratio of magnitude of the upward electric force on an electron to the magnitude of gravitational force on the electron.
We know that
F=qE
Charge on an electron,q=
Using the formula
Upward electric force= N
Upward electric force= N
Mass of electron=
Gravitational force=
Using the formula
Gravitational force=
Ratio of Fe to the Fg=