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"This Calc is credited to Iwandesu from OBD wiki."
B4UDOWNPLAY
It scales to Laxus, Natsu, Erza, Jellal, Gajeel, Mirajane, and Gildarts, possibly Wendy.
Onto the calc
Gray destroys the eternal flame
[[1]] The giant head is 52 px (15.29411)
[[2]] The tree is 17 px (about 5 m)
Now let's scale the mountain
i'll assume both the nearest and furthest fire variations have the same size (nothing outside of the safe zone) giant head 115px fire variation 149px (19.8158 meters) fire variation at the top (12px) panel height 1142px 2 * atan(12/ (1142/ tan(70 / 2))) 0.57052244 degrees which gives me a distance of 1991.8 meters i'm going to assume this is a tetraedrical pyramid because the guy didn't gave me scans where i could compare the ice width you people who have a problem with it can be my guests and find a proper scan i don't care either way this gives me a volume of 931259971.251 m^3
Mass=Density*Volume
air is 80% nitrogen and 20% oxygen
frozen nitrogen density is 1026.5 kg/m^3
density of solid oxygen is 1426 kg/m^3
NM=931259971.251 *1 026.5 x 0.8
NM=764750688391 kg
OM=931259971.251 *1426.5 x 0.2
OM=265688469798 kg we are by default assuming this ice sits at 54,75 kelvin
which is oxygen melting point
The heat of fusion of oxygen is 13875 J/kg
Q=m*l*t Fusion yeild1=265688469798 *13875
FYO=3.6864275e+15
the energy needed to heat liquid nitrogen is 920 J/kgk
we will be heating this 90.18k ice till it arrives 90,18k
Q=m*c*Δt
Heating yeild=265688469798 *920*35.43
HYO=8.6602751e+15 joules
now that the oxygen is at 52.75k we just need to apply its vaporization value
oxygen vaporization value is 213000 J/kg Q=m*l
Vaporization yeild=213000*265688469798
VY=5.6591644e+16 joules
now we will deal with nitrogen
specific heat of nitrogen is 1040 j/kgk
nitrogen melting point is at 63k
HYN1=8.25 x 1040 x 764750688391 HYN1=6.5615609e+15 joules
heat of fusion of nytrogen is 25800 j/kg
FYN=25800 x 764750688391
FYN=1.9730568e+16 joules
now i just need to heat the nytrogen until it reaches 77.2 k
HNY=14.2 x 764750688391 x 1040
HNY=1.1293838e+16 joules
now it is time for nytrogen vaporization (199000)
VYN=764750688391 x 199000
VYN=1.5218539e+17 joules
and then we just put it at the same temperature as oxygen (90.18k)
HNY3=12.98 x 764750688391 x 1040
HNY3=1.0323522e+16 joules
TE= 2.5668652e+17 joules
or
61 Megatons
City Level+/Large City
B4UDOWNPLAY
It scales to Laxus, Natsu, Erza, Jellal, Gajeel, Mirajane, and Gildarts, possibly Wendy.
Onto the calc
Gray destroys the eternal flame
[[1]] The giant head is 52 px (15.29411)
[[2]] The tree is 17 px (about 5 m)
Now let's scale the mountain
i'll assume both the nearest and furthest fire variations have the same size (nothing outside of the safe zone) giant head 115px fire variation 149px (19.8158 meters) fire variation at the top (12px) panel height 1142px 2 * atan(12/ (1142/ tan(70 / 2))) 0.57052244 degrees which gives me a distance of 1991.8 meters i'm going to assume this is a tetraedrical pyramid because the guy didn't gave me scans where i could compare the ice width you people who have a problem with it can be my guests and find a proper scan i don't care either way this gives me a volume of 931259971.251 m^3
Mass=Density*Volume
air is 80% nitrogen and 20% oxygen
frozen nitrogen density is 1026.5 kg/m^3
density of solid oxygen is 1426 kg/m^3
NM=931259971.251 *1 026.5 x 0.8
NM=764750688391 kg
OM=931259971.251 *1426.5 x 0.2
OM=265688469798 kg we are by default assuming this ice sits at 54,75 kelvin
which is oxygen melting point
The heat of fusion of oxygen is 13875 J/kg
Q=m*l*t Fusion yeild1=265688469798 *13875
FYO=3.6864275e+15
the energy needed to heat liquid nitrogen is 920 J/kgk
we will be heating this 90.18k ice till it arrives 90,18k
Q=m*c*Δt
Heating yeild=265688469798 *920*35.43
HYO=8.6602751e+15 joules
now that the oxygen is at 52.75k we just need to apply its vaporization value
oxygen vaporization value is 213000 J/kg Q=m*l
Vaporization yeild=213000*265688469798
VY=5.6591644e+16 joules
now we will deal with nitrogen
specific heat of nitrogen is 1040 j/kgk
nitrogen melting point is at 63k
HYN1=8.25 x 1040 x 764750688391 HYN1=6.5615609e+15 joules
heat of fusion of nytrogen is 25800 j/kg
FYN=25800 x 764750688391
FYN=1.9730568e+16 joules
now i just need to heat the nytrogen until it reaches 77.2 k
HNY=14.2 x 764750688391 x 1040
HNY=1.1293838e+16 joules
now it is time for nytrogen vaporization (199000)
VYN=764750688391 x 199000
VYN=1.5218539e+17 joules
and then we just put it at the same temperature as oxygen (90.18k)
HNY3=12.98 x 764750688391 x 1040
HNY3=1.0323522e+16 joules
TE= 2.5668652e+17 joules
or
61 Megatons
City Level+/Large City