Depends on the type of solar panel. You would need to look at the manufacturer's data to know the exact amounts.
Most photovoltaic cells generate an output of 7-12% of the energy they capture. Recent breakthroughs in technology have yielded a 22% output, which has been the highest achieved as of the 2006 Solar...
10^23 kilowatt-hours
about 2%
It depends on several factors. Look it up in Wikipedia. http://en.wikipedia.org/wiki/Photovoltaic_module