2. The acceleration of gravity is a constant equal to _______ meters per second squared. A. 8.4 B. 9.8 C. 10.2 D. 7.6
The acceleration of gravity is a constant equal to 9.8 meters per second squared.
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Updated 3/29/2016 9:03:21 PM
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The acceleration of gravity is a constant equal to 9.8 meters per second squared.

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12. Through which one of the following mediums is the velocity of a sound wave the greatest? A. Air B. Steel C. Lead D. Water
Question
Updated 3/30/2016 8:36:18 PM
The velocity of a sound wave is the greatest in: STEEL.
Confirmed by yumdrea [3/30/2016 8:48:56 PM]
17. A sound that's produced by a single wave at a constant frequency and with no overtones is called A. a mellow sound. B. an average sound. C. a pure sound. D. a discordant sound.
Weegy: A sound that's produced by a single wave at a constant frequency and with no overtones is called a PURE SOUND. User: 18. When a sound from a source is refracted away from the surface of the earth, it gives an indication that the A. air is cooler than the ground. B. wind is blowing in the direction of the sound. C. air has high humidity. D. ground is cooling faster than the air. Weegy: When a sound from a source is refracted away from the surface of the earth, it gives an indication that the air is cooler than the ground. User: 19. The number of waves that pass a particular point in a body in a unit of time is called the _______ of the waves. A. amplitude B. frequency C. rarefaction D. compression Weegy: The number of waves that pass a particular point in a body in a unit of time is called the frequency of the waves. User: 20. The wavelength of a wave is the distance between A. the amplitude and the normal position. B. the rarefaction and the following compression. C. two consecutive crests. D. the crest and the following trough. Weegy: The wavelength of a wave is the distance between : two consecutive crests. User: 21. Which one of the following environments will sound not travel through? A. Gas B. Vacuum C. Liquid D. Solid Weegy: The environment in which sound will not travel through is a VACUUM. User: 22. In a transverse wave that travels through a medium, the molecules of the medium vibrate A. with smaller amplitudes than the molecules in a longitudinal wave. B. at twice the velocity of the molecules in a longitudinal wave. C. in the direction in which the wave travels. D. at right angles to the direction in which the wave travels. Weegy: In a transverse wave that travels through a medium, the molecules of the medium vibrate at right angles to the direction in which the wave travels. User: 23. The part of the ear where sound wave compressions and rarefactions cause the eardrum to ... (More)
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Updated 3/31/2016 11:46:30 PM
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