When an electron breaks away from its covalent bond, the space previously occupied by the electron is referred to as a(n) ____________________.
Fill in the blank(s) with the appropriate word(s).
hole
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Which of the following battery byproducts can be explosive when mixed with air?
a. Acid b. Hydrogen c. Mercury d. Zinc
Ronald Reagan's supply-side economic advisers assured him that the combination of budgetary discipline and tax reduction would do all of the following EXCEPT
A. stimulate new investment. B. deplete overall tax revenues for the federal government. C. boost productivity. D. foster dramatic economic growth. E. reduce the federal budget deficit.
A thermostatic expansion valve system operating with a refrigerant undercharge will have:
A) A high system subcooling. B) A low system subcooling. C) Higher-than-normal compressor amp draw. D) A low superheat.
A BJT transistor has the following characteristics: td = 30 ns, tr = 30 ns, ts = 180 ns, tf = 45 ns. The practical maximum switching frequency (fmax) for the circuit is
A) 116 kHz B) 117 kHz C) 100,000 Hz D) 857,143 Hz