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two spheres with a charge +Q and -2Q are separated by distance R. if they are altered what will be R and charge on each sphere?
I want a domain name, can any one suggest betterexam.com is good domain, actually i want to make a website where student can do exam preparation
How do I prove High graduated from high school when they are not showing all 4 years in there system. I did marry my Jr. year.
when teaching preschoolers early reading and writing, I like to emphasize directionally/orientation in all activities. Suggestions?