A farsighted person has a near point distance greater than the normal distance of 25 cm. Neglecting the eye-lens distance, which approach will yield an appropriate corrective lens for this condition?
1.The corrective lens should have a focal length equal to the normal near point distance, i.e., 25 cm.
2.The corrective lens should have a negative focal length equal in magnitude to the normal near point distance, i.e., –25 cm.
3.The corrective lens should make an object at a distance equal to the near point appear to the eye to be at a distance of 25 cm.
4.The corrective lens should make an object at a distance of 25 cm appear to the eye to be at a distance of the near point.
4
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A) The passage of a light wave can cause electrically charged particles to move up and down. B) Light can be produced only by electric or magnetic appliances. C) The term electromagnetic wave arose for historical reasons, but we now know that light has nothing to do with either electricity or magnetism. D) Light is produced only when massive fields of electric and magnetic energy collide with one another.
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What will be an ideal response?
Define linear momentum
What will be an ideal response?
Instructions: On occasion, the notation 
will be a shorthand notation for 
.
If 
= [10 m, 30°] and 
= [25 m, 130°], what is the magnitude of the sum of these two vectors?
A. 20 m
B. 35 m
C. 15 m
D. 25 m
E. 50 m