Official Calculations Discussion Thread

[Arkenis]

When doing ground explosions does it matter which P number we put in or can either work (and P is the shockwave pressure in bars, where we generally use 1.37895 bars or 20 psi of pressure.)

 

[SeijiSetto]

When doing ground explosions does it matter which P number we put in

yes. 2 explosions of the same radii can have vastly different yields if their overpressure is different.

or can either work (and P is the shockwave pressure in bars, where we generally use 1.37895 bars or 20 psi of pressure.)

either between ? or ?

 

[Arkenis]

either between ? or ?

1.37895 bars or 20 psi of pressure being put in the formula. Like which goes in the P section?

 

[Vzearr]

1.37895 bars or 20 psi of pressure being put in the formula. Like which goes in the P section?

1.37895 bars is 20 psi, but you put 1.37895 bars into the formula. It says that on the page.

 

[ElJoaki5]

Would it be ok to calculate speed from KE if the relation between the two is explained in the same scene?

 

[Arkenis]

Would it be ok to calculate speed from KE if the relation between the two is explained in the same scene?

Wdym explained?

 

[ElJoaki5]

Wdym explained?

"Do not calculate speed from kinetic energy: The kinetic energy an object was calculated to possess, in any way whatsoever, should not be considered as related through its speed. While the formula technically can be used to relate those values in both direction this is disregarded in practice. One reason for this is that fiction in general differentiates between the attack potency and the speed of a character…"
If in a scene it’s explained that speed and KE are related, would it be okay to calculate speed from KE in that scene?

 

[Arkenis]

"Do not calculate speed from kinetic energy: The kinetic energy an object was calculated to possess, in any way whatsoever, should not be considered as related through its speed. While the formula technically can be used to relate those values in both direction this is disregarded in practice. One reason for this is that fiction in general differentiates between the attack potency and the speed of a character…"
If in a scene it’s explained that speed and KE are related, would it be okay to calculate speed from KE in that scene?

I'm asking how its explained. And that basically answers your question.

 

[ElJoaki5]

I'm asking how its explained. And that basically answers your question.

It’s explained here, I ask because the main reason for it not being allowed doesn’t apply in this situation.

 

[Arkenis]

It’s explained here, I ask because the main reason for it not being allowed doesn’t apply in this situation.

This isn't the same context, its fine.

 

[HorrorHistory]

Can the E = P x t formula be used for calculations in this wiki?

• P is the power in watts (W).
• t is the time in seconds (s) that the current flows after the short circuit occurs.

 

[Quibster]

Can anyone measure the Striking Strength/AP of WoL's attacks here? The force of his punches create shock waves that cause vibrations in a bucket's water from far away. Timestamped:

 

[Papusupreme]

Can anyone measure the Striking Strength/AP of WoL's attacks here? The force of his punches create shock waves that cause vibrations in a bucket's water from far away. Timestamped:

If there isn't a better shoot I don't think so. (Not what you asked but just in case that doesn't seem to be even City Block bc mag. IV earthquake and that wouldn't be considered one)

Actually kinda did it and it's like Small Building level.

 

[Emerald]

how do you calc the GPE of a black hole?

 

[Papusupreme]

how do you calc the GPE of a black hole?

You can't.

 

[Arkenis]

Is there a formula for measuring the speed of something from the audible sonic boom it makes happening several seconds after it’s already passed by?

 

[Quibster]

Wondering if the following FFXIV cutscene attacks can be calc'd;

Warrior of Light & Zeno's draw slashes causing a hole in the sky and large shock wave:


Warrior of Light punching a Sin-Eater + Shockwave upheaving the battlefield (this one may be the hardest)


Warrior of Light cleaving a Sin-Eater and parting the Flood of Light. For context, this involves parting aetherial light that reaches high into the mesosphere. I can also provide the circumfrence of the planet if need be. (the light itself has no documented durability afaik, so for the sake of a metric, i wanna say treat these as clouds? Sorry if this isn't helpful. )



Anyways thanks for your time!

 

[Papusupreme]

Note: I'm heading to bed right now.

Is there a formula for measuring the speed of something from the audible sonic boom it makes happening several seconds after it’s already passed by?

Take my words here with a grain of salt, but I don't think it's possible.

Wondering if the following FFXIV cutscene attacks can be calc'd;

1. Yes 2. Maybe but I don't think it's worth the effort. 3. Yes.

I can prob do those if further information given. So if you want you can do it here or in my message wall (IDK if there's any chance of derailing the thread so just in case).

 

[Emerald]

is there a value for melting or vaporizing feldspar and micas?

 

[Arkenis]

feldspar

Considering this is 60% of the Earth's crust, just go with what's listed on the calc page.

micas

I found this for Micas melting point though there's different types so may have to find the one you have in mind.

https://digitalfire.com/material/mica#:~:text=Data%20sheets%20for%20various%20mica,many%20different%20kinds%20of%20mica.

 

[The_King_of_Prudence]

Is there a formula for measuring the speed of something from the audible sonic boom it makes happening several seconds after it’s already passed by?

Might depend how long it's been going that fast.

 

[Demon_Lord18]

Is it possible to calculate the radius of a planet from its troposphere?

The troposphere of the planet in question extends to more than 1000km

 

[Arkenis]

Is it possible to calculate the radius of a planet from its troposphere?

The troposphere of the planet in question extends to more than 1000km

No. Planets of different size have troposphere sizes

 

[Demon_Lord18]

No. Planets of different size have troposphere sizes

Could cross multiplication be used?

 

[Arkenis]

Could cross multiplication be used?

Idk how. But I thought of finding the circumference via the troposphere.

 

[Demon_Lord18]

But I thought of finding the circumference via the troposphere.

You can't see the circumference

 

[HorrorHistory]

How can I find the speed that a heavy object is traveling with gravity?

 

[Arkenis]

How can I find the speed that a heavy object is traveling with gravity?

All objects fall at the same speed.

 

[Papusupreme]

How can I find the speed that a heavy object is traveling with gravity?

This doesn't make sense. Mind to send scans or explain it better?

 

[RoTt35]

What could be the density of a metal that is stated to possesses the tightest molecular bond of any conceivable substance? Is it possible to assume it?

 

[Vzearr]

All objects fall at the same speed.

That's only true in a vacuum.

How can I find the speed that a heavy object is traveling with gravity?

Assuming it's on earth, you can just use this calculator, it's the closest bet.

Is there a formula for measuring the speed of something from the audible sonic boom it makes happening several seconds after it’s already passed by?

Like, a character making a sonic boom and passing another character 10,000 meters away a second after the boom happens, and that other character hearing the sonic boom 2 seconds later? Yeah, there is. Just want to make sure I'm correct in assuming thats the formula you want before typing it out.

 

[Vzearr]

is there a value for melting or vaporizing feldspar and micas?

Do you still need this? I can calculate it later if you need.

 

[Emerald]

Do you still need this? I can calculate it later if you need.

i would appreciate it, thanks

 

[HorrorHistory]

This doesn't make sense. Mind to send scans or explain it better?

Like if a large and heavy boulder rolls down a hill, or a train rolling downhill on train tracks. Or would it just be the same speed as gravity at 9.81 m/s?

 

[Vzearr]

Like if a large and heavy boulder rolls down a hill, or a train rolling downhill on train tracks. Or would it just be the same speed as gravity at 9.81 m/s?

No, in that case you could use a calculator like this, if you want to calculate its speed at a specific time, that's a bit different, but I could get a formula for you.

i would appreciate it, thanks

Sorry for the late reply, I'm unfortunately unable to calculate it as I can't find a heat of fusion value for the materials. Apologies.

 

[HorrorHistory]

Can GPE still be used if a character falls from a large height while inside of an object (like a car, fridge, box, etc.)?

 

[HorrorHistory]

Also how can I calculate height (with gravity or smthg) if I can't angsize?

 

[Vzearr]

Can GPE still be used if a character falls from a large height while inside of an object (like a car, fridge, box, etc.)?

Assuming you're trying to calculate the amount of joules they tank, yes. But you'd only use their mass, not the mass of the car or fridge.

 

[Vzearr]

Also how can I calculate height (with gravity or smthg) if I can't angsize?

Yeah you could use this calculator, the closest you'll get.

 

[Ednaxel2]

Could a calc member please evaluate this calculation?

Beta-Carrotina flies across space

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