#969: Delta-P explain

[An open wardrobe, with a boat anchor attached to one corner, falling towards water.]

[Below the water line a formula with its variables explained is shown:]

Q = A * sqrt(2 * g * d)

Q = flow rate

A = area of opening

d = ocean depth (2 km)

g = Earth gravity

[And below the formula:]

Flow: ~400,000 liters/s

Water jet velocity: ~200 m/s

[Caption below the frame:]

The White Witch didn’t know what hit her.