Acar is traveling 80 km/h. if the car's speed remains constant, how far will it have traveled in 3 hours?

layers of the earth affect the waves and these effects are seen on instruiments such as seimometers

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.