among the four mechanisms of materials strengthening.Which of
these strengthening mechanisms can or can not be used where creep
strength is a major cocern? Why?
List at least two mechanisms by which the accomodation
coefficients for a spacecraft material can change due to the vacuum
environment. How might these changes be avoided or minimized? Why
does the rate of change in the accomodation coefficient decrease
with satellite lifetime?
PART I
Researchers in the corporate office of an airline wonder if
there is a significant difference between the cost of a flight on
Priceline.com vs. the airline's own website. A random sample of 16
flights were tracked on Priceline and the airline's website and the
average difference between the vendors was $4.251 with a standard
deviation of $9.2763. The 99% confidence paired-t interval for
price (Priceline - Airline Site) was (-2.5826, 11.0846). Which of
the following is the appropriate...
A continuous evaporator is operated with a given feed material
under conditions in which the
concentration of the product remains constant. The feed rate at the
start of a cycle after the
tubes have been cleaned has been found to be 5000 kg/h. After 48 h
of continuous operation,
tests have shown that the feed rate decreases to 2500 kg/h. The
reduction in capacity is due to
true scale formation. If the downtime per cycle for emptying,
cleaning, and recharging...
Thomas Company acquired machinery on January 2, 2016, which it
depreciated under the straight-line method with an estimated life
of fifteen years and no salvage value. On January 1, 2020, Thomas
estimated that the remaining life of this machinery was six years
with no salvage value. How should this change be accounted for by
Thomas?
Group of answer choices
by continuing to depreciate the machinery over the original
fifteen year life
as a prior period adjustment
as a change in...
1.
Coal is a naturally hydrophobic material. Describe the
circumstances under which this floatability may be reduced.
2. Using a suitable example describe the role of a collector
in sulphide flotation.
5 What are the different duties of Rougher, Scavenger and
Cleaner cells in a flotation plant? Draw a flow sheet of a
flotation circuit using all three types of cells (include two
stages of cleaning) and showing the direction of flow within the
circuit.
6 What is the effect...
When I sit and watch my students take
exams, I often think to myself "I wonder if students with bright
calculators are impacted by the pretty colors." This leads me to
wonder if there is a difference in the exam scores of students with
colorful calculators versus the exam scores of students with plain
black calculators. To investigate further, I took a sample of past
students. There were 49 students with colorful calculators with a
mean exam score of 84...
1.Can i use this material for making wheel(rim) for water hose
cart? 2.Which kind of procuction made of this material? 3.What is
manifacturing method of produce of them?*polytrimethylene
terephthalate(PTT) *PBT * PC+PBT