Velocity: What must be your average speed in order to travel 350 km in 5.15 h?
A. 66.0 km/h
B. 67.0 km/h
C. 68.0 km/h
D. 69.0 km/h
Answer: C
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Refracting Telescope: The focal length of the objective lens of a telescope is 75.0 cm, and the eyepiece has a focal length of 6.00 cm. What is the magnification of this telescope?
A. 0.0800 B. 0.645 C. 450 D. 12.5 E. 200
Ilona and Olivia observe a virtual image formed by an object placed a distance 
in front of a convex lens of focal length f. They argue about where to place a concave lens of focal length ?f to have a virtual image at the same location relative to the lens that they had with the convex lens. Ilona says that the object should also be placed a distance 
/> in front of the concave lens. Olivia says that this won't work. Which one, if either, is correct, and why? A.
B.
C.
D.
, then d0 was d0 = ?.E.
An ideal spring stretches by 21.0 cm when a 135-N object is hung from it. If instead you hang a fish from this spring, what is the weight of a fish that would stretch the spring by
A) 199 N B) 91 N C) 145 N D) 279 N
The following conversion equivalents are given:
1.0 mile = 5280 ft 1.0 ft = 12 in 1 m = 39.37 in 1.0 hour = 60 min 1.0 min = 60 s If a deer runs at 4.7 mi/h, its speed, in meters per second, is closest to A) 2.1 m/s. B) 1.7 m/s. C) 1.9 m/s. D) 2.3 m/s. E) 2.5 m/s.