A) generally, the crystals are expected to expand by temperature. what are the reasons for this? in which cases, it can be expected to decrease the size of the objects whose temperature increases.
b) explain the reasons for the formation of the forbidden band.
c) write down the reason why good conductors are used in mirror construction.
d) show sdia = sbas × sfcc for the structure factors; sdia, sbas, sfcc which are diamond crystal, the base of the diamond, and for fcc respectfully.

Look at the potential energy diagram for a chemical reaction. which statement correctly describes the energy changes that occur in the forward reaction?

Amoving company collects data about couches they move and displays the data in a table. the force along the ramp, the angle of the ramp, and the height the couch is raised to are shown. which statements correctly compare the work done to move the couches? check all that apply. the same amount of work is done for couches 1 and 3. the same amount of work is done for couches 2 and 3. the work for couch 1 is greater than the work for couch 2. the work for couch 2 is less than the work for couch 3. the work for couch 3 is greater than the work for couch 1. the work for couch 2 is greater than the work for couch 1.

Name two kinds of practical electric pumps.