The data listed below are for mechanical waves. Which wave has the greatest energy? amplitude = 7 cm; wavelength = 12 cm; period
2 answers:
Explanation :
The amplitude, wavelength and time period of three waves are given.
We know that energy of a wave is given by :
It is clear that energy of a wave is inversely proportional to the wavelength i.e
So, the wave having less wavelength will have the greatest energy.
Also, we know that energy of a wave is directly proportional to the square of amplitude i.e.
So, again the wave having maximum amplitude will have maximum energy.
Hence, the correct option is (C) i.e. "amplitude = 14 cm; wavelength = 7 cm; period = 12 seconds".
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Hello!
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Have a nice day!
The concentration of hydronium ions is related to pH by the following simple equation:
From this equation, you can see that as the hydronium concentration is higher, the pH will be lower.
The concentration of the OH⁻ ions is related to the pH by the following set of equations
You can see that as the concentration of OH⁻ is higher, the pOH is lower and thus the pH is higher.
When the pH of the solution is less than 7, the solution is acidic.
When the pH of the solution is higher than 7, the solution is basic.
Have a nice day!