You are given two metal spheres mounted on portable insulating supports. How would you give them equal and opposite charges ? You may use a glass rod rubbed
with silk but you may not touch it to the spheres. PLEASE HELP:((

Organelles are 1. responsible for producing power for the cell 2. tiny structures in the cell that carry out the cell's activities 3. responsible for digestion in the cell 4. found outside of the membrane

Why are graphs useful when interpreting data

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?