That depends on the noise. Could be pads/shoes, rotor/drum, hub bearings, etc. Have the front end properly checked out. Guessing costs lots of bucks.
== == Could be the transmission, or a front brake is sticking on.
This could be a bad strut or ball joint. If the noise is constant when you drive this is probably the cause. If the noise only happens when you hit a bigger bump/pothole I would check your motor mounts, this was the cause on my thunderbird.
Humming noise on the front passenger side of a 1997 Ford Explorer XLT may be due to a bad tire. Try to jack up the tire and spin it by hand to see if the noise is there.
A bad wheel bearing
I had a noise in the front end of my 2004 Mountaineer similar to what you described and it was front wheel bearings on the passenger side. $291.
mine doing the same when turning been to garage could be broke spring or strut top bearing .
It could be the passenger side hub/bearing assembly is bad. I wouldn't drive it any further than the closest garage for repair.
Check your power steering pump A: check the front Left wheel bearing
rack and pinion
State your noise.
that is either your front right wheel bearing or your coil spring is turning need new suspension..$$$$
It could be a worn ball joint, worn out frount bearings. No mater what it is, have it inspected by a mechantic. I didn't and had a ball joint break and lost a wheel. As luck would have it I was in my driveway at the time.