A rock is suspended from a scale reads 10.0 N. A beaker of water is raised up so the rock is totally submerged in the water. The scale now reads 6.25 N.What is the density of the rock?
A) 2.00 times the density of water
B) 2.33 times the density of water
C) 2.67 times the density of water
D) 3.00 times the density of water
E) 2.50 times the density of water
C
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The angular separation of two stars is 0.1 arcseconds and you photograph them with a telescope that has an angular resolution of 1 arcsecond. What will you see?
A) The photo will seem to show only one star rather than two. B) The two stars will appear to be touching, looking rather like a small dumbbell. C) The stars will not show up at all in your photograph. D) You will see two distinct stars in your photograph.
Waves arriving at a fixed boundary are
a. neither reflected nor inverted. b. reflected but not inverted. c. reflected and inverted. d. inverted but not reflected.
A 3.0-kg and a 5.0-kg box rest side-by-side on a smooth, level floor. A horizontal force of 32 N is applied to the 3.0-kg box pushing it against the 5.0-kg box, and, as a result, both boxes slide along the floor
How large is the contact force between the two boxes? A) 12 N B) 20 N C) 24 N D) 32 N E) 0 N
How many quarks are in a deuteron, H?
A) 2 B) 3 C) 4 D) 6 E) 9