Air Cleaner Pipe

[glegend]

Hi,

I need some advise, I'm abit of novice when it comes to an engine. I notice a pipe from the air clean to the front of my car had come away. I was wondering are they easy to replace & were does the end go(its connected to the air clearer & it is just danging by the fans).
My car is ford focus st170

Any advised would be appreciated.

Thanks.
G