Electronic Principles
What kind of battery is most likely included in a cordless electric knife?

Zinc-carbon battery
Mercury-cell battery
Nicad battery
None of these
Lead-acid battery

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Electronic Principles
Waveforms are graphs that show:

amplitude on the vertical axis and the passage of time on the horizontal axis
the passage of time on the vertical axis and amplitude on the horizontal axis
frequency on the vertical axis and amplitude on the horizontal axis
None of these
amplitude on the vertical axis and frequency on the horizontal axis

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