The discussion of the "launched apple" and the Moon shows that the
A. velocities of the apple and Moon are constant.
B. motion of the Moon and apple can be explained by the same laws.
C. apple and the Moon have the same acceleration.
D. apple and the Moon experience the same-sized force.
Ans: B. motion of the Moon and apple can be explained by the same laws.
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The direction of the force on a current carrying wire located in an external magnetic field is which of the following?
a. perpendicular to the field c. Both choices A and B are valid. b. perpendicular to the current d. None of the above are valid.
The distance across the ocean over which a steady wind blows is the:
As air temperature decreases, relative humidity
A) increases. B) decreases. C) stays the same. D) becomes colder.
The longitudinal strength of wood is due to the high strength of crystalline _________cells.
Fill in the blank(s) with the appropriate word(s).