Best, Dick Plano... Mount Everest is about 30,000 feet up, about 5 miles.

Best, Dick Plano... Dan, Which is more dangerous actually depends more on friction than amount of energy.

Best, Dick Plano... It is true, most capacitors tend to self-discharge about 50% in something like 15 minutes.

Best, Dick Plano... Hi Steven, You're thinking way harder than the answer I am going to give you.

Best, Dick Plano Hi Andrea- All the normal hydrogen element we've seen does not conduct electricity by itself.

Best, Dick Plano You have the concepts right but the answer is incorrect.

Best, Dick Plano... Boyang, It takes exactly the same force either way.

Best, Dick Plano, Professor of Physics emeritus, Rutgers University I would call that a yes.

Best, Dick Plano Dear Jeremy, Although I am not an expert on all things solar; here is my take on your question.

Dick Plano, Professor of Physics emeritus, Rutgers University.