Sphere X carries a charge of + 4 x 10 C, while sphere Y has an excess of 30 electrons
10.1
Calculate the magnitude of the charge on sphere Y

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Aplayground merry-go-round has a radius of 4.6 m and a moment of inertia of 200 kg-m2 and turns with negligible friction about a vertical axle through its center. a child applies a 26.0 n force tangentially to the edge of the merry-go-round for 15.0 seconds. if the merry-go-round is initially at rest, how much work did the child do on the merry-go-round?

If element x has 99 protons how many electrons does it have