A hydrogen bond can be formed between
a. an atom of H and one of C, P, or Cl in the same molecule.
b. an H atom in one molecule and an O, F, or N atom in another.
c. an atom of H in one water molecule and an atom of H in another.
d. the H atoms in H2 molecules.
b
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Fiber optics has to do with:
a. the color of fabrics. b. light having fiber characteristics as well as wave and particle characteristics. c. string theory. d. none of the above.
Lower frequency radio waves are reflected back to earth by the ______________
Fill in the blank(s) with correct word
The average power input to a series alternating current circuit is minimum when
A. there are only a resistor and capacitor in the circuit. B. there are only a resistor and inductor in the circuit. C. there is only a resistor in the circuit. D. XL = XC and the circuit contains a resistor, an inductor and a capacitor. E. there is only a capacitor in the circuit.
Impedance: What resistance is needed in series with a 10-?F capacitor at 1.0 kHz for a total impedance of 45 ??
A. 29 ? B. 42 ? C. 61 ? D. 1.8 ?