What is the mass of a sample of aluminum if the volume is 8.5cm cubed?

The  mass  of Aluminium if  the volume  is 8.5 cm³  is 22.95 grams

      calculation

 mass  =  density   x volume

 The density of Al is=2.7  g/cm³  (from given table)

 volume = 8.5 cm³

mass  is therefore = 2.7 g/cm³  x 8.5 cm³   =22.95 grams

electric field is a function of 1/r^2

yes, the force per unit charge for a point charge is inverse square law.

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it