car wont start but lights and radio come on on 2005 Ford Focus

when the car has been sitting for a few hours it will not start. the lights and radio come on and the lights dont dim after trying to start the car. once it starts then i can start it again if i shut it off and let it sit for 30 minutes to an hour but if i let it sit for a few hours then it wont start again.

Asked by for the 2005 Ford Focus
altenator or battery if u can get it started bring it advance auto parts or auto zone and have them test it them
1 more answer
The foucus won't start but everything elus works it wont even turn over