Which of the following explains why navigators prior to a few hundred years ago found it much more difficult to determine longitude than latitude?
A) Determining longitude requires mathematical techniques that were not known at the time.
B) Determining longitude requires much more precise measurements of angles in the sky than does latitude.
C) Determining longitude requires accurate tables of the celestial coordinates of stars, while determining latitude does not.
D) Determining longitude requires an accurate clock, but latitude does not.
D
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We know that the Schrödinger equation is specifically an equation for EEFs because
A. Quantons quickly settle down into EEFs. B. A bound quanton can only exist in an EEF. C. We derived it assuming that E had a definite value. D. It is a generalization of the de Broglie relation. E. Some other reason (specify).
Between 0° and 4°C, the volume coefficient of expansion for water
a. is positive. b. is zero. c. is becoming less dense. d. is negative.
The first displacement is 7 m and the second displacement is 3 m. They cannot add together to give a total displacement of:
a. 10 m. c. 4 m. b. 7 m. d. 3 m.
To prevent injuries, people should do all of the following EXCEPT _______
Fill in the blank(s) with the appropriate word(s).