Why is the conduction in a fin not able to be determined for the case where the base temperature is constant, as in Figure 2-9?

What will be an ideal response?


The fin is an extension of a surface and at the edges where the fin surface
coincides with the base, it is possible that two different temperatures can be
ascribed at the intersection, which means there is no way to determine
precisely what that temperature is. Conduction heat transfer can then not be
completely determined at the base.

Physics & Space Science

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On the H-R diagram, lines of constant radius are illustrated as _____

a. sloping downward from right to left b. sloping downward from left to right c. running vertically on the right side d. running horizontally on the top e. moving in various direction depending on the type of star

Physics & Space Science

Carbonaceous chondrites are meteorites that have

a. never been melted since formation from solid particles in the solar nebula. b. totally melted after formation. c. been made from hydrogen and helium. d. never entered Earth's atmosphere. e. entered Earth's atmosphere but will be destroyed before reaching the ground.

Physics & Space Science

The amount of energy converted to light by an incandescent light bulb is about

A) 10% and the amount converted to heat about 90% B) 90% and the amount converted to heat about 10%. C) either of these depending on the brand.

Physics & Space Science

A hole in a brass plate has a diameter of 1.200 cm at 20°C. What is the diameter of the hole when the plate is heated to 220°C? The coefficient of linear thermal expansion for brass is 19 × 10-6 K-1

A) 1.195 cm B) 1.200 cm C) 1.205 cm D) 1.210 cm

Physics & Space Science