Materials Science And Engineering Properties
1st Edition
ISBN: 9781111988609
Author: Charles Gilmore
Publisher: Cengage Learning
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Chapter 15, Problem 21CQ
To determine
Theratio of resolution possible with the human eye divided by the resolution with microscopic.
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What is the flow velocity of water in a 12" concrete sewer pipe (Manning's n = 0.013, and assume n is
variable with depth) at a slope of 2%, flowing partially full with a flow depth of 3"? Express your answer
in ft/s and round to the nearest 0.1.
Six samples of each of four types of cereal grain grown in a certain region were analyzed to determine thiamin content, resulting in the following data (μg/g).
Wheat 5.2 4.4 6.0 6.0 6.7 5.7
Barley 6.4 8.0 6.2 7.6
5.9 5.7
Maize
Oats
5.7 4.6 6.4 4.8
6.1 5.3
8.2 6.1 7.9 7.1 5.6 7.1
USE SALT
Does this data suggest that at least two of the grains differ with respect to true average thiamin content? Use a level α = 0.05 test.
State the appropriate hypotheses.
O Ho: H1 H2 H3 #44
H₁: all four μ's are equal
Ho M1 M2 M3 = μ4
H: all four μ's are unequal
Ho: M1 M2 M3 M4
Ha
: at least two us are equal
O Ho H1 H2 =μ3=4
Ha at least two μ's are unequal
Compute the test statistic value. (Round your answer to two decimal places.)
f =
What can be said about the P-value for the test?
P-value > 0.100
0.050 P-value < 0.100
0.010 < P-value < 0.050
0.001 < P-value < 0.010
P-value < 0.001
State the conclusion in the problem context.
◇ Reject Ho. There is significant evidence that at least two of the grains…
The Water Environment Federation (WEF) recommends that the linear flow-through velocity in a
wastewater clarifier should be less than to 0.020 m/s to prevent scour. Using ẞ = 0.06 for sticky particles
and a Darcy-Weisback friction factor of 0.03, estimate the specific gravity of a 200 μm diameter particle
that will be scoured at the recommended velocity. Express your answer in kg/m³ and round to the
nearest integer.
Chapter 15 Solutions
Materials Science And Engineering Properties
Ch. 15 - Prob. 1CQCh. 15 - Prob. 2CQCh. 15 - Prob. 3CQCh. 15 - Prob. 4CQCh. 15 - Prob. 5CQCh. 15 - Prob. 6CQCh. 15 - Prob. 7CQCh. 15 - Prob. 8CQCh. 15 - Prob. 9CQCh. 15 - Prob. 10CQ
Ch. 15 - Prob. 11CQCh. 15 - Prob. 12CQCh. 15 - Prob. 13CQCh. 15 - Prob. 14CQCh. 15 - Prob. 15CQCh. 15 - Prob. 16CQCh. 15 - Prob. 17CQCh. 15 - Prob. 18CQCh. 15 - Prob. 19CQCh. 15 - Prob. 20CQCh. 15 - Prob. 21CQCh. 15 - Prob. 22CQCh. 15 - Prob. 24CQCh. 15 - Prob. 25CQCh. 15 - Prob. 1ETSQCh. 15 - Prob. 2ETSQCh. 15 - Prob. 3ETSQCh. 15 - Prob. 4ETSQCh. 15 - Prob. 5ETSQCh. 15 - Prob. 6ETSQCh. 15 - Prob. 7ETSQCh. 15 - Prob. 8ETSQCh. 15 - Prob. 9ETSQCh. 15 - Prob. 10ETSQCh. 15 - Prob. 11ETSQCh. 15 - Prob. 12ETSQCh. 15 - Prob. 13ETSQCh. 15 - Prob. 14ETSQCh. 15 - Prob. 15ETSQCh. 15 - Prob. 16ETSQ
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