Context[]
In chapter 61 of Mashle, Margarette creates a giant bell which would cause a sonic boom in an area of 2 km wide
Calculation[]
Area of hemisphere = 3PiR^2
Area = 1000^2*Pi*3
Area = 9424777.96077m^2
| “ | Acoustic or sonic energy is generally measured in the form of decibels (dB). [...] the smallest quantified noise intensity for a sonic boom, which is 213 dB (obtained from this .pdf download, with references included).
Now, decibels can be converted into watts per square metre (W/m^2), which is the value we need in order to convert it ultimately into joules. This highly useful site provides us with a dB - W/m^2 correlation chart, making the conversion process simple (an order of magnitude of power for every 10 dB). [...] |
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Credits for this guy and this another guy
213 dB = 2e9W/m^2
Energy = 1.8849556e+16 Watts (Low 7-B+)
This is more Hax than AP, but it's for fun