Technician A says that a dry chemical fire extinguisher can be used on class A, B, and C fires. Technician B says that the chemical used in these fire extinguishers can be corrosive. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
C
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What elements and properties does alloy steel contain? What properties do these elements impart to the steel?
What will be an ideal response?
0.75 lbm of oxygen is initially at 30 psi and 50oF. The oxygen expands in an isobaric process until its volume is 6.2 ft3. Assuming the oxygen behaves as an ideal gas with constant specific heats, determine the change in total internal energy and total enthalpy of the oxygen during the process.
Given: m = 0.75 lbm; P1 = P2 = 30 psi (isobaric process); T1 = 50oF = 510 R; V2 = 6.2 ft3 What will be an ideal response?
Four important requirements for any successful grafting operation producing plants include: ________, ________, ________, and ________.
Fill in the blank(s) with the appropriate word(s).
Given the following weekly average traffic volumes, counted over an entire year (average daily traffic for all Mondays in a year, all Tuesdays, etc.), develop Daily Expansion Factors for the data.
What will be an ideal response?