With an optically perfect 200-power telescope with a 1.5-inch-diameter tube, you can resolve objects roughly how many times closer together than you could with your naked eye? (Choose the closest answer.)
A. 200 times
B. 100 times
C. 20 times
D. 5 times
E. No better at all
D. 5 times
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Rainbows are caused by sunlight being
A) dispersed. B) dispersed, refracted, & reflected. C) refracted. D) reflected. E) refracted & reflected but not dispersed.
The force on a charged object divided by the charge on the object is
a. voltage. b. current. c. resistance. d. electric field. e. critical temperature.
Addition by 1. Components: Vector 
has a magnitude of 7.0 m and points 30° east of north. Vector 
has a magnitude of 5.0 m and points 30° west of south. The resultant vector 
+ 
is given by
A. 10.0 m at an angle 60° north of east. B. 10.0 m at an angle 30° east of north. C. 2.0 m at an angle 30° north of east. D. 2.0 m at an angle 60° north of east. E. 1.0 m at an angle 60° east of north
The main producer of sediment is
A) mechanical weathering. B) ice wedging. C) chemical Weathering. D) erosion.