An electrical blow dryer consists of a solid cylindrical wire in which thermal energy comes from electrical resistance (passage of electrical current through the core of the wire). Air blows on the wire in such a way that it may be assumed that the convective heat transfer coefficient is the same on all wire surfaces. Consider the moment of interest to be when the dryer has been running for a very long time. (i) Simplify the appropriate general heat equation to give the equation that would be used to determine the temperature distribution in the system wire (draw a schematic representation of the problem and clearly state your assumptions), and (ii) In equation form, write the boundary conditions that apply. Do not attempt to solve the equations. In all cases, you can ignore radiation.
Answers: 1
Physics, 21.06.2019 18:30, mariatorres7
Which of these describe conduction transfer of heat between two objects that are touching transfer of heat by the actual movement of war matter the process in which energy is imitated by one of the object transmitted through space and absorbed by another a process in which energy is released by the molecules breaking apart
Answers: 1
Physics, 22.06.2019 18:30, yclark98563p5z2gt
Suppose you plot the distance traveled by an object at various times and you discover that the graph is not a straight line. what does this indicate about the object's acceleration?
Answers: 3
Physics, 22.06.2019 22:30, nickocasamplonp6mlob
The drag force, fd, imposed by the surrounding air on a vehicle moving with velocity v is given by fd = cdaρv 2/2 where cd is a constant called the drag coefficient, a is the projected frontal area of the vehicle, and ρ is the air density. an automobile is moving at v = 80 kilometers per hour with cd = 0.28, a = 2.3 m2, and ρ = 1.2 kg/m3.
Answers: 2
An electrical blow dryer consists of a solid cylindrical wire in which thermal energy comes from ele...
Mathematics, 04.07.2020 14:01