It depends. A live tutor would probably be more cost-effective (and maybe even cheaper) because you can interact with them better and faster. But if you can't find a tutor through your school, you might think about spending the money for an online tutor.
There are no studies on this, but many people do use online homework.
There are many online tutorial sites that will help you with your 8th grade homework.
You don't
Here's a link to some good online homework help!
There are plenty of websites that provide homework help online. Some of them are free of cost and some of them require a minimal amount. If someone needs and expert assistance, i think cost must not matter, but quality must be on high priority. I have a a website in my view StudentLance.Here students can take the opportunity to post their homework request in 50+ subjects. Even students can set the deadline and instruct the tutor how do they want their homework should be. Also, students can set the time frame when they need their homework to be delivered.
Online you have access to lots more information
Wikapidea
Yes it does unlike the crap Xbox! Ps3 is absolutley free for online doesn't even cost a penny! It's worth it!
Online homework is sometimes helpful - it can be graded easily and the student can get everything done on the computer instead of having to use paper and books. Some homework just needs to be done the old-fashioned way, though.
For homework help in science there are several online websites that provide tutoring or homework help. Two of the best websites are http://www.factmonster.com/homework/hwscience.html and http://school.discoveryeducation.com/homeworkhelp/science/science_homework_help.html?campaign=DE&CFID=12994222&CFTOKEN=68534092. They offer homework help with all the sciences not just specifically chemistry, but chemistry as well.
A free program to help you in your studies can be found at http://www.tutor.com/. This does not cost you anything, and gives you access to thousands of reputable tutors for every subject.
no this site should not be online because it is giving children the opportunity to cheat on there homework