Why are phase-change (eutectic) solutions used inside the cold plates mounted in the walls or ceiling of trucks?
What will be an ideal response?
When the change of state occurs, from solid to liquid, much more heat is absorbed per pound of material.
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In what scenario would you use a bell and spigot pipe joint?
A. Plastic lines and pipes B. Copper water pipes C. Connecting two pipes of the same diameter D. Clay and concrete piping
When lifting an object, _____.
a. bend over as far as possible b. lift with your legs, not your back c. use mostly your arm muscles d. raise the load as quickly as possible
Determine the number of degrees through which the minute hand moves from 7:10 to 8:05.
Fill in the blank(s) with the appropriate word(s).
Industrial systems often use _____ to concentrate sunlight on fluid-filled pipes.
A. ?evacuated tube B. i?nsulated box C. ?parabolic trough D. flat plate