Electric planes can have many uses to them ranging from just recreationally flying them to races, as well as reenactments of wars. http://www.xenonproject.com/rc-airplanes/electric-planes/
You can purchase an electric RC plane online from retailers such as Amazon. Once on the page, type "Electric RC plane" into the search field at the top of the page and press enter to bring up the planes.
Stores and companies that deal directly with the hobby of electric planes could help you find an electric rc plane. Also, if you look on Ebay, Amazon, or Craigs List you might be able to find someone who would like to sell one to you.
The price range for an electric remote control plane would vary based on the type of plane you want. A basic one would cost much less than one with more expensive material or a large one.
Both RC plane are awsome because they are both planes.
Yes, they always have at least 7 different motor speeds never less
If it is an electric RC plane then all you will need to pay for is the plane and if you plan on crashing a lot some spare propellers if it is an RTF or ready to fly version. If it is an ARF or almost ready to fly you will have to buy a motor too.
Yes, you can bring an electric razor on a plane in your carry-on luggage.
Yes, you can bring an electric shaver on a plane in your carry-on luggage.
Yes, you can take an electric razor on a plane in your carry-on luggage.
Yes, you can take an electric shaver on a plane in your carry-on luggage.
The electric field produced by an infinite plane of charge is uniform and perpendicular to the plane.
No, you cannot take an electric lighter on a plane as it is considered a hazardous item.