For the ion He+, what is the energy of the ground state?
A. -13.6 eV
B. -27.2 eV
C. -54.4 eV
D. -6.80 eV
E. -3.40 eV
C. -54.4 eV
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Two charged particles repel each other with a force F. If the charge of one particle is doubled and the distance between them is doubled, the force will be
A) F. B) 2 F. C) F/2. D) F/4. E) none of the above
A charge of 8.0 pC is distributed uniformly on a spherical surface (radius = 2.0 cm), and a second charge of ?3.0 pC is distributed uniformly on a concentric spherical surface (radius = 4.0 cm). Determine the magnitude of the electric field 5.0 cm from the center of the two surfaces.
A. 14 N/C B. 11 N/C C. 22 N/C D. 18 N/C E. 40 N/C
The difference in energy levels that exists between the valence band and the conduction band is called
a. semiconductor region. b. spark gap. c. energy gap. d. covalent gap.
Shapley found that globular clusters are only found in the Galactic bulge
Indicate whether the statement is true or false