Find the work done by shopper as she moves down the 49.5m length aisle. She pushes the cart force of 34.2N at an angle of 23.4° downward from the horizontal.

d) physical means can be used to separate the components of air.

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.