Which of these fire classifications involves flammable liquids?
a. Class A
b. Class B
c. Class C
d. Class D
b. Class B
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Air at 450 kPa and 20°C fills a piston-cylinder assembly to a volume of 0.075 m3. The air expands, in a constant-temperature process, until the pressure is 150 kPa. (The constant-temperature process with a gas can be modeled as a polytropic process with n=1.) Determine the work done by the air as it expands.
Given: P1 = 450 kPa; V1 = 0.075 m3; P2 = 150 kPa What will be an ideal response?
Insulating concrete forms can only be used for _________.
A) exterior load-bearing walls more than 10 in. thick. B) interior or exterior non-load-bearing walls. C) interior load-bearing walls. D) all of the above. E) none of the above.
?The AWS identification system for covered nonferrous electrodes is based on the ____________ or symbols of the major alloy(s) or the metal's identification number.
Fill in the blank(s) with the appropriate word(s).
When vehicle speed doubles its braking force must increase ___ times to stop in the same distance:
a. 4 b. 8 c. 10 d. 12