Which of the above illustrations shows an acidic aqueous solution?
A) A
B) B
C) C
D) All of the above are neutral solutions.
E) none of the above
Answer: C
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An optical fiber is 1.0 meter long and has a diameter of 20 ?m. Its ends are perpendicular to its axis. Its index of refraction is 1.30
What is the maximum number of reflections a light ray entering one end will make before it emerges from the other end? A) 84,000 B) 42,000 C) 26,000 D) 24,000 E) 18,000
The electric field on a given gaussian surface is determined by all the charged particles in the entire universe. Nonetheless, the net flux of the electric field through that surface only depends on the charged particles inside that surface.
Answer the following statement(s) true (T) or false (F)
Two in-phase loudspeakers that emit sound with the same frequency are placed along a wall and are separated by a distance of 5.00 m
A person is standing 12.0 m away from the wall, equidistant from the loudspeakers. When the person moves 1.00 m parallel to the wall, she experiences destructive interference for the first time. What is the frequency of the sound? The speed of sound in air is 343 m/s. A) 211 Hz B) 422 Hz C) 674 Hz D) 512 Hz E) 256 Hz
Twenty-five identical molecules are in a box. Microstates are designated by identifying the molecules in the left and right halves of the box. The multiplicity of the configuration with 15 molecules in the right half and 10 molecules in the left half is:
A. 1.03 × 1023 B. 3.27 × 106 C. 150 D. 25 E. 5