Given the above diagram, describe what happens electronically between these two molecules.
A. Oxygen W becomes slightly positively charged due to the oxygen molecule.
B. Oxygen W becomes slightly negatively charged due to the oxygen molecule.
C. Oxygen A becomes slightly positively charged due to the electrons on the water molecule.
D. Oxygen B becomes slightly positively charged due to the electrons on the water molecule.
E. none of the above
Answer: D
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When a baseball player hits a ball with a 1000-N force, the ball exerts a force on the bat of
A. more than 1000 N. B. 1000 N. C. less than 1000 N. D. none of the above
Which of the following is a foreign substance that produces an immune response?
A) an abzyme B) an antibody C) an antigen D) none of these
The North Atlantic gyre rotates counterclockwise.
Answer the following statement true (T) or false (F)
A statement you will sometimes hear people say is that a day is not 24 hours but is really 23 hr. 56 min. and 4 sec. What does this refer to?
A) Our clocks drift that much each day, and we average out the affect with period time shifts, like leap years and leap seconds. B) This is sidereal time, not solar time; a solar day is 24 hours. C) It is just an urban geek myth; the day really is 24 hours long. D) The original definition of the hour was off, and with more accurate atomic clocks we now realize the real day is this length.