Infrared is a __________ light to the human eye.
A. visible
B. invisible
Answer: B
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Allelopathic chemicals, once added to soil, usually make the affected soil unsuitable for any plant life for periods of years
Indicate whether the statement is true or false
A bandpass filter is designed to
A) pass all frequencies below its cutoff frequency B) pass all frequencies above its cutoff frequency C) reject the band of frequencies between its cutoff frequencies D) pass the band of frequencies between two cutoff frequencies
In the series portion of series-parallel circuits, the total resistance is:
A) less than the largest resistance. B) greater than the largest resistance. C) equal to the largest resistance. D) less than any one resistance.
Which two types of heat can an evaporator remove from the air?
A. radiant, conduction B. sensible, radiant C. latent, sensible D. superheat, subcooling