A “swing” ride at Canadians wonderland has chairs that are swung in a circle by 15m cables attached to a vertical rotating pole. Total mass of chair is 179 kg. What tension in the cable attached to the chair and speed of the chair

The two stars in a certain binary star system move in circular orbits. the first star, alpha, has an orbital speed of 36 km/s. the second star, beta, has an orbital speed of 12 km/s. the orbital period is 137 d. a) what is the mass of the star alpha? b) what is the mass of the star beta?

Sodium chloride, nacl, is formed when a sodium atom transfers its electron to a chlorine atom. the difference in charge between the two atoms creates a(n) attraction that bonds them together.

If the area of a square has increased by a factor of 16, by how much has each side increased?