Mort is on Earth, and Velma passes him at a high speed. Mort and Velma each carry a standard kilogram. Concerning the kilograms, Mort observes that
A) both have a mass of 1 kilogram.
B) Velma's has a mass of 1 kilogram, but Mort's is more massive than 1 kilogram.
C) Velma's is more massive than 1 kilogram and Mort's has a mass of 1 kilogram.
D) Velma's has a mass of 1 kilogram, but Mort's is less massive than 1 kilogram.
E) Velma's is less massive than 1 kilogram and Mort's has a mass of 1 kilogram.
C
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The angular magnification of a refracting telescope is 40. When the object and final image are both at infinity, the distance between the eyepiece and the objective is 143.5 cm. The telescope is used to view a distant radio tower
The real image of the tower, formed by the objective, is 6.0 mm in height. The focal point of the eyepiece is positioned at the real image. What is the focal length of the objective lens? A) 139 cm B) 141 cm C) 140 cm D) 138 cm
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