Which of the following is the most common web audio format?
A. .Au
B. .wav
C. .ogg
D. .mp3
Answer: D
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What is the basic definition of a black hole?
A) an object with gravity so strong that not even light can escape B) a dead star that has faded from view C) any object made from dark matter D) a compact mass that emits no visible light
It is not true that the neutrino
a. is an elementary particle. b. interacts extensively with other particles. c. has no electric charge. d. travels at or near the speed of light.
Four identical particles (mass of each = 0.40 kg) are placed at the vertices of a rectangle (2.5 m × 4.0 m) and held in those positions by four light rods which form the sides of the rectangle. What is the rotational inertia of this rigid body about an axis that passes through the mid-points of the shorter sides and is parallel to the longer sides?
A. 2.2 kg?m2 B. 2.8 kg?m2 C. 2.5 kg?m2 D. 3.1 kg?m2 E. 1.6 kg?m2
Pitch corresponds to
1) frequency, 2) noise, 3) loudness, whereas amplitude corresponds to 4) frequency. 5) noise. 6) loudness.