MLP G1 - Rainbow of Darkness calcs

I plan on remaking the Tirac page that was deleted here a while ago (many years now) but for that, the quasi-satanic centaur requires some calcs.

Blowing up a wall

By the end of the special Tirac causes a mini-earthquake and blows through at least one of his castle walls to soar into the sky atop his Chariot of Midnight.

First, we need Tirac's height, and thankfully we have a size chart for the G1 MLP special featuring the 13-year old protag Megan Williams.

104 px = the disabled-world website (which I cannot link) lists 13 yo girls at 156.7 cm

217 px = 326.960577 cm (dang Tirac is big)

152 px = 229.023077 cm (this is Scorpan, Tirac's second-in-command, his height might be useful in future calcs)

For the hole I'll need something else as reference, that being the wheel of Tirac's Chariot.

222 px = 326.960577 cm

260 px = 382.926802 cm

Now, the hole, which I'll treat as a half-cylinder.

wheel: 102 px = 382.926802 cm

wall thickness: 32 px = 120.133899 cm

minimum radius: 418 px = 1569.24905 cm

max radius: 606 px = 2275.03571 cm

mean average radius: 1922.14238 cm

This is the volume, but divided by two we get 697198683 cc x 8 J/cc (frag of rock) = 5577589464 joules = 1333.075875717 kg of TNT (Building level+)

Creating an horizon-wide ocean and storm

We don't see it happen on-screen but we see that Tirac's castle is surrounded by a massive thunderstorm and a giant ocean that spans deep into the horizon, and once the Rainbow of Light undoes everything created by Tirac (who gets blown up), his castle turns back into the tree it once was, the ocean surrounding the castle becomes a mountainous landscape and the sky goes back to being blue and clear.

Ocean

Though taking a few notes from Clover's calc here, I will however go with 200 m for the max depth as that's when deep sea starts, since I don't know if Tirac's ocean is kilometric in depth.

The horizon is listed here, from the perspective of an average joe of 1.8 m, at 4.8 kilometers, so let's go with that as the diameter. I'll treat it like a bowl, a half-ellipsoid basically (due to the decline from the coastline as the deeper the water gets).

Divided by two that's 2.41274316e9 cubic m

x 1000 kg/m3 (density of water) = 2412743160000 kilograms

Center of mass would be half the depth (so 100 meters) and gravitational acceleration is 9.81 m/s^2 so: 2412743160000 x 100 x 9.81 = 2.36690104e15 J = 565.70292543 kilotonnes (Large Town level+)

Storm

Going off classic cape methods, first we calculate the area, with the cloud thickness of 8000 m and the same horizon-based diameter, then get the area and calculate the mass of the cloud:

A number with 666 in there, how fitting for MLP's Satan xD

This doesn't look like a particularly intense thunderstorm so I'll go with 2500 j/kg ("moderate instability"): 676629326666.35840 kg x 2500 j/kg = 1.69157332e15 joules = 404.29572658 kilotonnes (Large Town level)

Total Energy

2.36690104e15 + 1.69157332e15 = 4.05847436e15 J = 969.99865201 kilotonnes (Large Town level+)