A person with normal eyesight uses a converging lens of focal length 10 cm. He holds the lens close to his eyes to finish an engraving job. What is the magnifying power of the lens?
A) 3.5
B) 4.5
C) 6.5
D) 7.5
E) 8.5
A
Physics & Space Science
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Relative to an initial height, an object raised twice as high has a gravitational potential energy
A) half as much B) twice as much. C) four times as much. D) need more information
Physics & Space Science
Center of Mass: A 1.0-g bead is at (-2.0 cm, 2.0 cm), a 2.0-g bead is at (2.0 cm, -4.0 cm), and a 3.0-g bead is at (2.0 cm, 0.0 cm). What are the coordinates of the center of mass (or center of gravity) of this system of beads?
Fill in the blank(s) with the appropriate word(s).
Physics & Space Science
The resultant moment vector MR at point O in Problem 2.2 is (in N?m)
(A) 12j 1 18k (B) 215i 1 12k (C) 18j 1 12k (D) 212i 1 18j
Physics & Space Science
Uranus' orbital period is 84 years. How far is Uranus from the sun?
What will be an ideal response?
Physics & Space Science