A copper is 4 cm long at 10 Cº. The coefficient of linear expansion for copper is 1.7 x 10-5 (Cº)-1. Calculate the change in length (AL). when it is at 70 Cº.

Write the correct abbreviation for each metric unit

During cooling, the kinetic energy of the molecules falls. why does this happen? a.the motion of the molecules increases. b. the motion of the molecules slows down. c.the van der waals forces between molecules decrease d. the forces of attraction between the molecules are overcome.

Objects a and b are visible in the night sky. six months later they are still visible, but object b shows less parallax than object a. which object is closer? a. a b. b c. you would need to wait another six months in order to figure this out. d. you would need to know the objects' angular diameters in order to figure this out.