Answer:
The sides
Explanation:
Because there's a seat in front of the child to avoid him/her from flying
Answer:
Explanation:
Given
current required 
Internal Resistance 
According to ohm law
Current flows in a conductor is directly Proportional to the voltage applied.



Answer:
Induced emf through a loop of wire is 3.5 V.
Explanation:
It is given that,
Initial magnetic flux, 
Final magnetic flux, 
The magnetic flux through a loop of wire decreases in a time of 0.4 s, t = 0.4 s
We need to find the average value of the induced emf. It is equivalent to the rate of change of magnetic flux i.e.



So, the value of the induced emf through a loop of wire is 3.5 V.
If velocity is constants there is no acceleration therefore acceleration will equal zero.