Although electrons do not normally have precise positions, you can cause an electron to have a (fairly) precise position by
A) measuring its velocity.
B) measuring both its position and velocity at an earlier time.
C) measuring its position.
D) measuring its momentum at an earlier time.
E) measuring its wavelength.
C
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If the scalar product of two vectors, 
and 
, is equal to ?3.5, if 
align="middle" />, and the angle between the two vectors when they are drawn starting from the same point is equal to 130°, what is the magnitude of ?
A. 2.1
B. 2.5
C. 2.3
D. 2.7
E. 3.1
The depositional landform at the farthest advance of a glacier is called a
A) lateral moraine. B) medial moraine. C) terminal moraine. D) stratified moraine.
Most of the hot, young blue stars lie in the ________ of our Galaxy
A) bulge B) globular clusters C) central bar D) spiral arms E) halo
The work done by a variable force in moving an object between two points is equal to the area under the force versus displacement curve between those two points
Indicate whether the statement is true or false