Consider the case of an adhesive joint created by bonding two poly(vinyl chloride) (PVC) (component A) sheets together with an epoxy adhesive (component B). The surface energies for the PVC solid surface, liquid epoxy, and PVC/epoxy interface are 47 erg/cm2, 41.7 erg/cm2, and 4.0 erg/cm2, respectively. (a) Calculate the work of cohesion (going from two interfaces to no interface) within the epoxy adhesive. This is the work required to separate epoxy bonds from one another. (b)Calculate the work of adhesion between one surface of the PVC sheet and the liquid epoxy. This is the work required to separate the epoxy from the PVC. (c) Calculate the free energy of spreading associated with epoxy 'wetting' the PVC. Will the epoxy spontaneously 'wet the PVC?

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.

  distance on the y-axis and time on the x-axis.

explanation:

the instantaneous velocity = change in position/time taken

the slope of the graph should give instantaneous velocity.

  slope of a graph = change in value of y -axis / change in values of x -axis

  comparing both the equations

    change in value of y -axis = change in position

  change in values of x -axis = time taken

so position values should be on the y axis and time values should be on the x axis.

distance on the y-axis and time on the x-axis.