Which best describes pitch? the amount of time taken for a longitudinal wave to produce one cycle
the number of cycles per second perceived by the human ear
the amplitude of a wave when the natural frequency is matched
the distance between two corresponding parts of a transverse wave

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because natural gas is colorless, odorless, and tasteless, distributors add mercaptan (a chemical that smells like sulfur) to give natural gas a distinct unpleasant odor (it smells like rotten eggs). they locate the types of rock that are likely to contain natural gas deposits.

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the atomic number of carbon is six, which means that a carbon atom has six protons. carbon has three naturally occurring isotopes: carbon-12, carbon-13, and carbon-14. which of these statements are true about carbon and its isotopes? select all that appl