Fpenny's piston is wider than pauly's, who is pushing with greater force?

It would depend on who is stronger but it is likely that Penny would be creating larger pressure because the surface area is less. If this is part of a question where the pressure for both is the same then Pauly is pushing with greater force, I know this because force/area=pressure and when the surface area is larger the force must be greater as well.

Hope this helps :)

Ireally just need to get finished with precal! i’m really sorry i have to do this! hope this !

That depends on what kind of environ meant it is in  in space it has the same force that was applied when the velocity was gained