An asbestos pad is square in cross section, measuring 5 cm on a side at its small
Question:
An asbestos pad is square in cross section, measuring 5 cm on a side at its small end, increasing linearly to 10 cm on a side at the large end. The pad is 15 cm high. If the small end is held at 600 K and the large end at 300 K, what heat-flow rate will be obtained if the four sides are insulated? Assume one dimensional heat conduction. The thermal conductivity of asbestos may be taken as 0.0173 W/m · K.
Step by Step Answer:
qdx kAdt q...View the full answer
Fundamentals Of Momentum Heat And Mass Transfer
ISBN: 9781118947463
6th Edition
Authors: James Welty, Gregory L. Rorrer, David G. Foster
Related Video
Conduction heat transfer is the transfer of heat through matter (i.e., solids, liquids, or gases) without bulk motion of the matter. In another ward, conduction is the transfer of energy from the more energetic to less energetic particles of a substance due to interaction between the particles. Conduction heat transfer in gases and liquids is due to the collisions and diffusion of the molecules during their random motion.
Students also viewed these Physics questions
-
Solve Problem 15.1 for the case of the larger cross section exposed to the higher temperature and the smaller end held at 300 K. Data From Problem 15.1 An asbestos pad is square in cross section,...
-
Solve Problem 15.1 if, in addition to a varying cross- sectional area, the thermal conductivity varies according to k = k 0 (1 + /T), where k 0 = 0.138, = 1.95 10 -4 , T = temperature in Kelvin,...
-
Solve Problem 15.1 if the asbestos pad has a 1.905-cm steel bolt running through its center Data From Problem 15.1 An asbestos pad is square in cross section, measuring 5 cm on a side at its small...
-
Ford Company's cost of capital is 13%. It has invested x (million dollars) in current assets. The following function represents the shortage cost of its current assets: S = 9 e- x/3 Find the...
-
M.T., a 75-year-old, white 60kg IBW woman with a serum creatinine of 1.8 mg/dL, has atrial fibrillation. A decision has been made to use digoxin for heart failure. The target concentration of digoxin...
-
List the steps in initiating and using the collaborative conflict-resolution model.
-
Consider the model \(y_{i}=\beta_{1} x_{i}+\varepsilon_{i}\), that is, regression with one explanatory variable without the intercept term. This model is called regression through the origin because...
-
When customers purchase a service, they are actually getting a bundle of service attributes. List and describe these attributes using a car-rental agency, a convenience store and a radio station.
-
Why do some manufacturing companies offer extended warranties to their customers if they must record a liability on their Balance Sheet for these warranties?
-
Compute the value of P for the following diagram 120 120 120 50 50 50 i-10%
-
A pump operating at 2400 rpm delivers 3.2 m 3 /s of water against a head of 21 m. Is this pump an axial-flow, mixed-flow, or radial-flow machine?
-
A sheet of insulating material, with thermal conductivity of 0.22 W/m K, is 2 cm thick and has a surface area of 2.97 m 2 . If 4 kW of heat are conducted through this sheet and the outer (cooler)...
-
In Exercises 1724, write a formula for the general term (the nth term) of each geometric sequence. Then use the formula for a n to find a 7 , the seventh term of the sequence. 12, 6, 3, 3/2, . . . .
-
1. See the nearby figure showing primary and secondary connections. Working on your own, write down all of your primary contactsindividuals you know personally who can support you in attaining your...
-
Consider and discuss how Lewins general theory of change underpins the complacency and leading change models (Exhibits 18.6 and 18.7). Exhibit 18.6 Exhibit 18.7 1. Establishing a sense of urgency 2....
-
In a blog entry on the Barrons Web site, the head of emerging markets research at the Japanese investment bank Nomura was quoted as saying the following about the Brazilian economy: We think all this...
-
In racetrack betting, a \(\$ 1\) bet placed at odds of 5:1 pays \(\$ 6\) if you win, and \(\$ 0\) if you lose. The odds ratio in this example is 5 . A gambler who believes that he has inside...
-
(a) Consider a cross-sectional regression of stock returns onto a constant (normalized to unity). Show that the regression coefficient is the return on a portfolio. What portfolio? (b) Suppose that,...
-
The cloning vectors in use today contain an origin of replication, a select able marker gene (usually an antibiotic- resistance gene), and one additional component. What is this component, and what...
-
Identify the tax issues or problems suggested by the following situations. State each issue as a question. Jennifer did not file a tax return for 2007 because she honestly believed that no tax was...
-
(a) A flux density field is given as F 1 = 5a z . Evaluate the outward flux of F 1 through the hemispherical surface, r = a, 0 < < /2, 0 < < 2. (b) What simple observation would have saved a lot of...
-
(a) A point charge Q lies at the origin. Show that div D is zero everywhere except at the origin. (b) Replace the point charge with a uniform volume charge density v0 for 0 < r < a. Relate v0 to Q...
-
In a region in free space, electric flux density is found to be Everywhere else, D = 0. (a) Using · D = Ï v , find the volume charge density as a function of position everywhere. (b)...
-
A representative household maximizes. where . BlogC1+i) j=0 Ct+j+kt+j (3) (4) Note that the second term of the right-hand side of the equation is expressed by not Kt+j-1 but Kt+j-2. In other words,...
-
Two parallel plates 15 cm on a side are given equal and opposite charges of magnitude 5.5 x 10-9 C. The plates are 3.5 mm apart. What is the potential difference between the plates (in V)? (Enter the...
-
The equipotential lines in a region of electric field are shown in the diagram below. For each path indicated below, what is the work do by the electric field in moving a charge q = +7.5 x 107 C...
Study smarter with the SolutionInn App