Answer:

Explanation:
The definition of the intensity in terms of power is given by:

Where:
- P is the power
- A is the area
If the sound emits uniformly in all directions and that there are no reflections, we can assume the geometry of the wave sound is spherical.
Let's recall the area of a sphere is 
To the first location we have:

and to the second location we have:

Now, we can divide each intensity to find the second intensity.




I hope it helps you!
Answer:
At 100°C, the pH of pure water is 6.14. That is the neutral point on the pH scale at this higher temperature. A solution with a pH of 7 at this temperature is slightly alkaline because its pH is a bit higher than the neutral value of 6.14.
Explanation:
nonde
Answer:
Photons.
Explanation:
Einstein explained the photoelectric effect by proposing that light is transmitted, not in the form of continuous waves, but in the form of many tiny, discrete packets of energy called photons. Photons are massless and chargeless particle. The energy of a photon is given by :

f is the frequency of photon.
The different types of radiation are defined by the the amount of energy found in the photons. X-Ray photons will have greater frequency than microwaves but microwaves will have greater wavelength.
There are seven regions in the electromagnetic spectrum which in order of lowest to highest frequency are: Radio waves, microwaves, infrared, visible light, ultraviolet, X-rays and gamma rays. Wavelength is inversely proportional to frequency, therefore radio waves have the longest wavelength and gamma rays have the shortest. that is why X-Ray machine photons have greater frequency and shorter wavelength while microwave photons have lower frequency but higher wavelength.
Learn more about Wavelength here-
brainly.com/question/12924624
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