Hello can you retype this question so I can help you?
Answer:
Pu-244 and 94 alpha decay = U -240 and 92
Answer:
Force = 100N
Explanation:
Force = mass × acceleration
First one I believe but im not completely sure
If one of two interacting charges is doubled, the force between the charges will double.
Explanation:
The force between two charges is given by Coulomb's law

K=constant= 9 x 10⁹ N m²/C²
q1= charge on first particle
q2= charge on second particle
r= distance between the two charges
Now if the first charge is doubled,
we get 
F'= 2 F
Thus the force gets doubled.