Answer:
Frequency of sound wave in water = 6.8 Hz
Explanation:
Given:
Speed of sound wave in water = 10.2 m/s
The wavelength of the sound wave in water = 1.5 m
Find:
Frequency of sound wave in water
Computation:
Frequency = Speed of wave / Wavelength
Frequency of sound wave in water = Speed of sound wave in water / The wavelength of the sound wave in water
Frequency of sound wave in water = 10.2 / 1.5
Frequency of sound wave in water = 6.8 Hz
The Gulf of Mexico
OR
near trenches, in the middle of the ocean, the continental shelf, and lastly, in the United States
The asker of the second question needs a tutorial in radiometric dating. There is little likelihood that the daughter isotope has the same atomic weight as the parent isotope. To measure the mass isotopes doesn't tell us how many atoms of each exist. To get around that let's pretend — which will likely serve the purpose ineptly intended — that the values give an the particle ratio, 125:875.
<span>The original parent isotope count was 125 + 875 = 1000. The remaining parent isotope is 125/1000 or 1/8. 1/8 = (1/2)^h, where h is the number of half-lives. </span>
<span>h = log (1/8) ÷ log(1/2) = 3 </span>
<span>And 3 half-lives • 150,000 years/half-life = 450,000 years.</span>
