An object of mass 0.5 kg is swung in uniform circular motion. the radius is 2 meters, and the force exerted is 4 n. calculate the magnitude of the velocity.

Elements in group viiia (also known as group 18, or the noble gases) have similar properties because they all have a. the same number of electron shells b. full octets c. the same number of valence electrons d. the same number of electrons needed to fill their octet