Which of the following statements is untrue in regard to sound traveling in air?
a. during a...
Physics, 30.09.2019 20:00 greend0719
Which of the following statements is untrue in regard to sound traveling in air?
a. during a single vibration of the diaphragm, molecules in the air near it will also complete one vibration.
b. the area covered by the wave front increases as the wave advances, but the energy passing through a wave front in a unit of time decreases.
c. sound waves in the air are transverse and consist of compressions and rarefactions of air molecules.
d. as the distance from the earth increases, the sound wave intensity also decreases due to the lessening density.
Answers: 1
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If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?
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Physics, 22.06.2019 20:50
In a game of pool, ball a is moving with a velocity v0 of magnitude v0 = 15 ft/s when it strikes balls b and c, which are at rest and aligned as shown. knowing that after the collision the three balls move in the directions indicated and assuming frictionless surfaces and perfectly elastic impact (that is, conservation of energy), determine the magnitudes of the velocities va, vb, and vc.
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