What is the net static electric charge on a metal sphere having an excess of +3 elementary charges?
A. 4.7 x 10
B. 8.4 x 10
*C. 4.8 x 10
D. 8.7 x 1019 C
A hydrogen atom could have an electron energy level transition from n=2 to n=3 by absorbing a photon having an energy of?
*A. 1.89 eV
B. 2.04 eV
C. 2.25 eV
D. 2.87 eV
Two solid metal blocks are placed in an insulated container. If there is a net flow of heat between the blocks, they must have different?
*A. Initial temperatures
B. Specific Heat values
C. Melting points
D. Heats of fusion
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