An object weighs 30 n on earth. a second object weighs 30 n on the moon. which has the greater mass? question 15 options: the one on the moon the one on earth not enough information to say they have the same mass.

Earth gravity = 9.8 m/s²

Moon gravity = 1.6 m/s²

Weight = (mass) x (gravity)

Divide each side by (gravity) and then it says:

Mass = Weight / gravity

Object on Earth:  Mass = (30N) / (9.8 m/s²)  =  3.06 kg

Object on Moon:  Mass = (30N) / (1.6 m/s²)  =  18.52 kg

If two objects have the same weight on Earth and on the Moon, then the one on the Moon must have more mass.  Six times as much mass, in fact.

an obstruction

luster is not a good characteristic to use by itself because luster is the property of minerals that indicates how much the surface of a mineral reflects light. the luster of a mineral is affected by the brilliance of the light used to observe the mineral surface.