19. The temperature of 100 g of water is to be raised from 10 clC to 90 C....how much energy is required to do this (note: the specific heat capacity of water is 1.0 cal/g l3'2]? A. 1250 cal B. 800 cal C. 890 cal D. 8000 cal 20. If two metal bells each have a negative electric charge of -10'6 C and the repulsive force between them is 1 N, how far apart are they? [recall that Coulomb's constant is k=9.Ux109 N'mZICZ.) A. 8.9 mm B. 0.0949 m C. 9.49 m