Why are all elemental minerals and metals theoretically recoverable?
What will be an ideal response?
Most simply, they are theoretically recoverable precisely because they are elements. An element is a substance whose atoms all have the same number of protons. Elements are the most basic substances because they cannot be broken down or transformed further by chemical means. As a consequence, all elemental metals and minerals embodied in an engineered product are theoretically recoverable because of their property of irreducibility.
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Technician A says that spur gears are quieter than helical gears. Technician B says that helical gears produce greater thrust forces than spur gears. Which technician is correct?
A) Technician A only B) Technician B only C) Both technicians D) Neither technician
In the Media Oriented System Transport (MOST) data bus system, what changes light signals into voltage that is then transmitted to the MOST transceivers?
What will be an ideal response?
Microns used to measure deep vacuum by measuring:
A) The distance between the remaining molecules. B) The number of molecules remaining in the evacuated space. C) The height of a column of mercury supported by the remaining absolute pressure. D) The amount of pressure that has been removed.
How does surface roughness affect the pressure drop in a tube if the flow is turbulent? What would your response be if the flow were laminar?
What will be an ideal response?