The number of overtones, and their relative intensities, is associated with what property of the tone generated by a musical instrument?
a. quality
b. interference pattern
c. range
d. attack pattern
a
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Momentum: A firecracker breaks up into two pieces, one of which has a mass of 200 g and flies off along the +x-axis with a speed of 82.0 m/s. The second piece has a mass of 300 g and flies off along the +y-axis with a speed of 45.0 m/s. What is the total momentum of the two pieces?
A. 361 kg ? m/s at 56.3° from the +x-axis B. 93.5 kg ? m/s at 28.8° from the +x-axis C. 21.2 kg ? m/s at 39.5° from the +x-axis D. 361 kg ? m/s at 0.983° from the +x-axis E. 21.2 kg ? m/s at 56.3° from the +x-axis
A 25-W soldering iron runs on 110 V dc. What is its resistance?
A) 0.0020 ? B) 4.4 ? C) 0.48 k? D) 2.8 k?
If the specific heat capacity of water were lower than it is, a nice hot bath would be a
A) shorter experience. B) longer experience. C) same regardless of water's specific heat capacity.
At absolute zero, a substance has
A) absolutely no molecular motion. B) no more energy to give up. C) no volume. D) all of the above