1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Neko [114]
3 years ago
12

In a manufacturing process, long aluminum rods of square cross section with d = 25 mm are cooled from an initial temperature of

Ti = 400°C. Which configuration in the sketch should be used to minimize the time needed for the rods to reach a safe‐to‐handle temperature of 60°C when exposed to air in cross flow at V = 8 m/s, T[infinity] = 30°C? What is the required cooling time for the preferred configuration? The emissivity of the rods is ε = 0.10 and the surroundings temperature is Tsur = 20°C.

Engineering
2 answers:
laiz [17]3 years ago
6 0

Answer:

The time required will be 511 seconds.

Burka [1]3 years ago
6 0

Answer:

The required cooling time is 613 s and configuration 1 (face of the rod) should be used.

Explanation:

please look in the image.

You might be interested in
1. The construction process begins with which of the following stages?
Firdavs [7]

Answer:

c) site preparation

Explanation:

A construction process can be defined as a series of important physical events (processes) that must be accomplished during the execution of a construction project.

Generally, in the construction of any physical asset such as offices, hospitals, schools, stadiums etc, the first step of the construction process is site preparation. Site preparation refers to processes such as clearing, blasting, levelling, landfilling, surveying, cutting, excavating and demolition of all unwanted objects on a piece of land, so as to make it ready for use.

This ultimately implies that, site preparation should be the first task to be accomplished in the construction process.

Hence, the construction process typically begins with site preparation before other activities such as the laying of foundation can be done.

Additionally, construction costs can be defined as the overall costs associated with the development of a built asset, project or property. The construction costs is classified into two (2) main categories and these are; capital and operational costs.

7 0
3 years ago
In a short essay, discuss the question, "How are you an innovator?"
iragen [17]

Answer:

Being innovative means doing things differently or doing things that have never been done before. An innovator is someone who has embraced this idea and creates environments in which employees are given the tools and resources to challenge the status quo, push boundaries and achieve growth.

Explanation:

Hope it helps..

But it's a little bit long..

Correct me if I'm wrong..

7 0
3 years ago
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
trasher [3.6K]

Answer:

The publication of a parody for commercial gain does not fall within the protection afforded by Section 107, as it is used for commercial gain.

Explanation:

<h2><u><em>PLEASE MARK AS BRAINLIEST!!!!!</em></u></h2>
4 0
3 years ago
1. An air standard cycle is executed within a closed piston-cylinder system and consists of three processes as follows:1-2 = con
QveST [7]

Answer:

Explanation: Here it is: 67 Hope that helps! :)

5 0
3 years ago
The 10-lb block is pressed against the spring so as to compress it 2 ft when it is at a point A. If the plane is smooth, determi
leva [86]

Answer:

The distance measure from the wall = 36ft

Explanation:

Given Data:

w = 10

g =32.2ft/s²

x = 2

Using the principle of work and energy,

T₁ +∑U₁-₂ = T₂

0 + 1/2kx² -wh = 1/2 w/g V²

Substituting, we have

0 + 1/2 * 100 * 2² - (10 * 3) = 1/2 * (10/32.2)V²

170 = 0.15528V²

V² = 170/0.15528

V²     = 1094.796

V = √1094.796

V = 33.09 ft/s

But tan ∅ = 3/4

∅ = tan⁻¹3/4

   = 36.87°

From uniform acceleration,

S = S₀ + ut + 1/2gt²

It can be written as

S = S₀ + Vsin∅*t + 1/2gt²

Substituting, we have

0 = 3 + 33.09 * sin 36.87 * t -(1/2 * 32.2 *t²)

19.85t - 16.1t² + 3 = 0

16.1t² - 19.85t - 3 = 0

Solving it quadratically, we obtain t = 1.36s

The distance measure from the wall is given by the formula

d = VCos∅*t

Substituting, we have

d = 33.09 * cos 36. 87 * 1.36

d = 36ft

5 0
3 years ago
Read 2 more answers
Other questions:
  • What are the disadvantages of using 3D ink jet printing ??
    8·1 answer
  • Advances in vehicle manufacturing technology have decreased the need for:
    10·1 answer
  • 2. The initially velocity of the box and truck is 60 mph. When the truck brakes such that the deceleration is constant it takes
    12·1 answer
  • . In one stroke of a reciprocating compressor, helium is isothermally and reversibly compressed in a piston + cylinder from 298
    6·1 answer
  • Which of the following waste characteristic is considered to be hazardous:
    15·1 answer
  • What is a network? I'LL MARK BRAINLEST
    12·2 answers
  • A remote village on an island was devastated by a typhoon. Farmland was flooded and the crops
    9·1 answer
  • Who wanna rp?????????????????????????!
    15·1 answer
  • Select the correct answer.
    11·1 answer
  • How do we infer that there is
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!