Oh man, I leave to pick up the kids and we totally go all techno nerd in 2 hours.

Okay, to the best of my ability and fuzzy memory, here's the answer to the hertz questions for motors and clocks.

Clocks- If it's quartz, the crystal oscillation measures the time, and that's not effected by hertz (my watch works this way, and it's powered by a tiny DC battery therefore no hertz). However, I think that I remember if it's a super cheap digital clock that isn't quartz, it can measure time by measuring the hertz of the input power source, in which case, it would run slower.

For A/C induction motors- They will run slightly slower, but probably not enough to notice. Okay, maybe in a vacuum cleaner, but definitely not a blender or whatever. Since it's turning slower, the built in cooling fan on the end of the armature is moving less air i.e. not cooling as well. Also, due to some electronic voodoo having to do with the magnetic field, it's possible that it may be drawing more amps. Those things combined may shorten the motor life on something that gets a lot of use (vacuum cleaner), but probably not something that's used in short bursts like a food processor.

For Mandy_Moe

Short answer- yes

Longer answer-

Look on the transformer in power cord- if it has a sticker that says something like "input volts 120-240" get a plug adapter and it will work fine