In the air I assume.
You use ailerons usually. The rudder could also be used if you want to yaw left.
In simpler terms, the ailerons turn the whole airplane on it's side (the left wing has slightly less lift and goes down and the right wing is higher from increased lift). The nose stays level (well not, but take it as only the ailerons).
The rudder will turn the nose to the left. The wings stay relatively level (again, you will eventually start turning left, but take it as only the rudder).
Rudder and ailerons, just like you turn a single.
Rudder. Except you would almost never do this because if you turn the nose to the left, the nose wouldn't be pointed in the direction the plane was going and you would have the right side of the plane facing into the wind rather than the nose. This is called a 'slip' and is normally used only when landing in a crosswind.
Yes it is
Airplane mode?
Not legally.
Yes, you can. You can also turn off wireless if needed.
Rotational speed is the propeller slipstream and engine torque all contrive to make the airplane turn left during takeoff.
Not legally.
[left turn sig. ]right turn sig.
the elevators on an airplane is used to change the airplane's pitch. The pitch of an airplane is what makes the airplane go up and down without turning, if you turn, that would become roll.
Bad bulb or crossed wires somewhere. If it only happens, say, when you use the left turn signal, but not when you use the right turn signal, it's probably one of the left-side bulbs.
It has no airplane mode. Just turn off wifi.