Two speakers in a stereo emit identical pure tones. As you move around in front of the speakers, you hear the sound alternating between loud and zero. This occurs because of __________
Fill in the blank(s) with correct word
interference
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In a wind tunnel the pressure on the top surface of a model airplane wing is 8.8 × 10^4 N/m and the pressure on the bottom surface is 9.0 × 10^4 N/m2 . If the area of the top and bottom surfaces of each wing is 2.0 m2, what is the total lift on the model airplane?
a. 2.0 × 10^3 N b. 8.0 × 10^3 N c. 1.6 × 10^4 N d. 3.6 × 10^4 N e. 1.0 × 10^3 N
Two dogs, Rover and Fido, run on a level frictionless surface. Rover runs eastward with a momentum of 24 kg . m/s, and Fido runs northward with momentum 10 kg . m/s
They make a sudden perfectly inelastic collision. What is the magnitude of their combined momentum after the collision? A) 14 kg . m/s B) 26 kg . m/s C) 34 kg . m/s D) It cannot be determined without knowing the masses and velocities of the dogs.
The term "timbre" refers to which of the following?
a. Any musical instrument made primarily of wood. b. The quality of sound from instruments due to the mixture of harmonics. c. Instruments that have valves. d. An instrument made in France.
When water boils, its temperature __________
Fill in the blank(s) with correct word