If a magnet is put inside one coil of wire a voltage is produced. what will happen if the magnet is put inside two coils of wire

The choices can be found elsewhere and as follows:

A)There will not be a change. 
B)The voltage will decrease by a factor of two. 
C)The voltage will increase by a factor of two. 
D)The two coils of wire will cancel out the magnetic field. 
E)The voltage will be zero.

I believe the answer is option C. If the magnet is put inside two coils of wire, then the  voltage will increase by a factor of two. Hope this answers the question.

Since you have not included the experiment situation and the data, of course, i can not give you specific details about it. but i can you with this question.1) i will assume that the motion is projectile (parabolic) motion.2) yes, the horizontal distance depends on the horizontal velocity as, naming vx the horizontal velocity and t the time, it is: x = vx × t3) now, observe that the flight time depends on the vertical velocity as, naming voy the initial vertical velocity, t the time and y the vertical distance before reaching the ground: y = yo + voy×t - gt² / 2.the higher the initial vertical velocity (voy) the longer the object will be flying and so t will be higher in the equation for the horizontal distance.that explains the relationship between the horizontal distance and the horizontal velocity.