If two atoms appear in the same column of the periodic table they will
a. form similar compounds.
b. have similar physical characteristics.
c. have similar melting points.
d. do all of the above.
e. do only (a) and (c) above.
D
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A proton is moving at 
m/s in a magnetic field of 30 mT. What is the magnetic force on the proton?
A. 
B. 
C. 0.0
D. 
E. More information is needed.
Based on our current theory of Earth's formation, the water we drink comes from
A) ice that condensed in the solar nebula in the region where Earth formed. B) chemical reactions that occurred in Earth's crust after Earth formed. C) chemical reactions that occurred in Earth's core after Earth formed. D) material left behind during the giant impact that formed the Moon. E) comets that impacted Earth.
A 15-?F capacitor is charged to 40 V and then connected across an initially uncharged 25-?F capacitor. What is the final potential difference across the 25-?F capacitor?
A. 12 V B. 18 V C. 15 V D. 21 V E. 24 V
If the induced current in a wire loop were such that the flux it produces were in the same direction as the change in external flux causing the current, which of the following conservation laws would end up being violated?
a. momentum b. charge c. energy d. angular momentum