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How do we find the width of a Rectangular Prism with just the Height and Length?

ZackMoon1234

VS Battles
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Shura's Wrath - Chapter 817


After this hell, an even more terrifying hell appeared, because the Shura once again acted… the first time, he killed millions of people with a roar, and then he opened his Eyes of Extermination. This time was the first time he had properly attacked. He raised the Lunar Scourge Divine Spear, which was covered with a dark fog, and roared as he swept it forwards…

BOOM……………………………………….

Every corner of the Forgotten Continent felt a massive quake.

Everyone's hearing was once again drowned out, and their vision became incredibly dark… it was not because more dark clouds had appeared but because the 50 kilometres of ground in front of the Shura had been completely lifted up, sending millions of players flying up thousands of metres into the air. In an instant, the heavens and earths seemed to be flipped, and the ground sank down by tens of metres. The sky became filled with dirt and screaming players. However, their screams only lasted for a short while before their bodies were completely annihilated by the berserk power.

Whoosh…

The dirt rained down back to the ground, but none of the millions of players fell back down… because there were only tiny fragments of flesh. Let alone whole corpses, there was not even a whole finger.

When the dirt landed back on the ground, it was no longer a greyish yellow but a shocking dark red colour, and it was filled with countless fragments of bodies and equipment. Above the ground, countless large and small black holes twisted from the remnants of the Shura's power.

Everyone felt completely suffocated. Yun Feng and Xiao Qiu Feng's eyes widened, unable to even breathe properly. They simultaneously pinched themselves… it hurt greatly, but they still felt that they were in a dream.

Just then, when the Shura had attacked, it was only a casual, single-handed attack… an area of 50 kilometres had been destroyed, and more than 80% of the invaders had been utterly annihilated… that was nearly 23 million players! What's more, it wasn't just the invading players, but nearly 2 million Chinese players had been caught within that attack as well.

"D-Demon… Demon… Demon!!!!"

Tens of millions of people had been completely obliterated in just an instant. The remainder of the invading players had their wits completely shocked out of them, and nearly half of them wet their pants. The players who had relatively stronger minds screamed as they scrambled away into the distance. As they ran, they felt as if their hearts were going to leap out of their chests… this was a nightmare! It was definitely a nightmare! That person… was definitely a demon!!

So I'm trying to calc this feat by the Main Character by myself using the "Ep = M*g*h" Formula


E = M * g * h

E = M * 9.81 m/s2*1,000 meters


Mass = Volume * Density


Volume = l * w * h

Volume = 50,000 meters * N/A * 77 meters


Density = 2400 Kg/M^3


Is there any way?
 
Huh. Are you sure that you're using the right formula, mate? From what I'm reading, he's lifting this rectangular prism of ground thousands of meters in the air. So, instead of calcing the potential energy, which it looks like you're doing here, wouldn't you calculate the kinetic energy (1/2mv^2) that this attack would use?

Hints for values cause you said you wanted to calc it yourself:

Volume: It is clearly stated "an area of 50 kilometres had been destroyed". The way this has been put makes me think that the writer meant 50km squared using that statment, especially becuase he used the term area. So, a good low-end for the volume of this feat would assume that the rectangular prism is 20m deep, as the writer used the term "tens of meters" so 20 would be a good low end.

Density: He lifted this amount of dirt. I don't know what you're using, but the density of dirt is not 2,400 kg/m^3. It's only 1,220-1,250 kg/m^3 depending if it's wet or dry (wet is heavier).

Mass: You know how to work this one out, you already proved that.

Speed: When the term "in an instant" is used, a good lowball estimate that this site accepts is 1 second. And, if the players were thrown "thousands of meters into the air", 2km is probably a good lowball. And, I'm pretty sure you know the equation for speed.

Hope this helps mate!
 
I think I did this wrong...


(1/2mv^2) / (1/2) (Mass) (Velocity ^2)

Mass = Volume * Density


Volume = 20 meters / 8,000 cubic meters - http://www.endmemo.com/cconvert/m3m.php

Density = 1,220 kg/m^3 - https://vsbattles.com/vsbattles/1815794

Mass = 9,760 kilograms - http://www.smartconversion.com/unit_calculation/Mass_calculator.aspx

Mass = 9,760,000 kilograms - http://www.calculator.net/mass-calc...tyunit=1&cvolume=8000&cvolumeunit=1&x=32&y=37

(1/2)(9,760 Kilograms)(2,000^2) = 119520000000 joules - https://www.omnicalculator.com/physics/kinetic-energy

(1/2)(9760000 Kilograms)(2,000^2) = 19520000000000 joules - https://www.omnicalculator.com/physics/kinetic-energy

119520000000 joules = 28.57 Tons (8-B / City Block Level) - http://www.convertanyunit.com/energy/

19520000000000 joules = 4665.39 Tons / 4.66539 Kilotons (Low 7-C / Small Town Level) - http://www.convertanyunit.com/energy/


Volume = 20 kilometers / 20,000 meters / 8000000000000 cubic meters - http://www.endmemo.com/cconvert/m3m.php

Density = 1,220 kg/m^3 - https://vsbattles.com/vsbattles/1815794

Mass = 9,760,000,000,000 kilograms - http://www.smartconversion.com/unit_calculation/Mass_calculator.aspx

Mass = 9,760,000,000,000,000 kilograms - http://www.calculator.net/mass-calc...volume=8000000000000&cvolumeunit=1&x=101&y=20

(1/2)(9,760,000,000,000 Kilograms)(2,000^2) = 19520000000000000000 joules - https://www.omnicalculator.com/physics/kinetic-energy

(1/2)(9,760,000,000,000,000 Kilograms)(2,000^2) = 19520000000000000000000 joules - https://www.omnicalculator.com/physics/kinetic-energy

19520000000000000000 joules = 4665391969.41 Tons / 4665391.96941 Kilotons / 4665.3919694 Megatons / 4.67 Gigatons (6-C / Island Level) - http://www.convertanyunit.com/energy/

19520000000000000000000 joules = 4665391969407.27 Tons / 4665391.9694 Kilotons / 4665391.97 Megatons / 4665.39 Gigaton / 4.67 Teratons (Low 6-B / Small Country Level) - http://www.convertanyunit.com/energy/


Man, I don't know how to calc...
 
It's ok. Here, I'll take you through how the equation works.

So, first, you need to work out the mass and the velocity. When you already know the density and volume, it kinda helps with mass. As the qoute said "area of 50km", I'll use that, and the 20 meters for reasons explained above to give a total volume(=h*w*d) of 1,000,000 m^3 (50,000 m^2 * 20 m) of dirt that he threw into the sky for a low-end. And, cause dirt weighs 1,220 kg/m^3, that means he threw (1,000,000 * 1,200=)1,200,000,000kg of matter into the air.

And, for velocity, he threw that all 2,000 meters into the sky (lowball) in a second (also lowball). That meant that the matter was moving at 2,000m/s.

If I insert those values into this calculator , I find that he exerted 2.4^15 joules to throw this amount of dirt into the air, i.e. Large Town Level+. Hope that helped you understand this equation.
 
Thank you.

Seems like it's lower than what I expected but his later feats are superior to this.
 
Hey, I saw that you requested that this gets evaluated. To do that, you need to paste it into a blog format, cause the calc group won't evaluate a thread.
 
Oh.

I'll do so in a few minutes.

Thanks.

Do I just copy the one with the calc that you made
 
Wait, for the "area of kilometer" , which I'll assume will be 50 km ^2

When I used this calculator to convert 50 km ^2 into squared meters, it gave me 50000000 m^2 or 5e+7 m^2

So if I multiply 5e+7 m^2 * 20 m , it should give me 1,000,000,000 kg

So if we multiply 1,000,000,000 kg * 1,200 , it should give me 1,200,000,000,000 kilograms

Then if we use the calculator that you used above, it should be 2,400,000,000,000,000,000 or 2.4^18 worth of joules

It would be Mountai if so, but I could be wrong
 
That checks out. I think what I did wrong was that I just multiplied 50km by 1,000, without realising that that is for 1D measurements, not 2D ones, where I need to multiply 50km by 1,000,000. Thanks for noticing that one, mate!
 
No problem.

I just used your calc and modified it as I wanted to work out how you did the calc and saw the meter squared was different from the one I got

I'll make a blog for the feat now
 
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