Is Physical Energy Can Become Thermal Energy How Hard Would I Have To Push A Chicken To Cook It
Similar virtually people, I oft look for more efficient ways to exercise things. Since heat is only another form of kinetic energy, is information technology possible to cook a chicken past hitting it?
I see a few means this trouble can exist approached: multiple hits, or one hit.
Using multiple hits could exist more realistic, however this approach gives time for the chicken to cool off in betwixt hits. On the other hand, one striking will probable be well above the thresh hold of being humanly possible– otherwise we would be hearing stories of professional boxers cooking their lunches by punching it mercilessly.
First off, nosotros need to decide just how much energy it takes to turn this:
Into this:
A craven must exist heated to 75 degrees Celsius in order to be cooked and safe to eat. Equally chicken is roughly 75% water and since water has the highest heat chapters of whatever common substance, we will use this to determine how much energy it will have to oestrus up our craven.
To calculate the corporeality of energy it will have to estrus a sure amount we use the following formula:
The specific rut of water is 4,184 Joules/Kg*degC
The weight of a total size chicken is one.6kg-two.2kg
Assuming the chicken has been thawed, information technology will exist at room temperature (xx degrees Celsius). This gives usa a alter in temperature of 75-20=55 degrees Celsius.
If nosotros put these values into our formula nosotros get:
Q=cm/\T
Q=(4,184)(2.0)(55)
Q=460,240 Joules -or- 460kJ
Multiple hits
A study of superlative Olympic boxers revealed that they can dial with between 500-yard Joules of energy. This means that our chicken would require between 460-920 punches to reach a temperature where it would be safe to eat. Although some of the boxers tin hit pretty rapidly, I incertitude any of them could hitting at a faster rate than the chicken would lose estrus.
One hit
A person's arm's mass is around 5.three% of the person'due south total weight. This gives us a mass of ~5.0kg. To deliver 460kJ of energy in one hit, our arm and fist must exist travelling 430m/due south or 1540km/h. This scenario seems even less likely than our beginning i!
Given that neither of these scenarios are likely I volition add a third method.
Heat by friction
The bird with the highest top speed is the peregrine falcon. It tin reach speeds of 390km/h! Using this as a baseline for the concluding velocity of a chicken, we can see if hitting the ground could cook a craven.
The formula for kinetic energy is: KE= 1/2mV^ii
Since our kinetic energy is being converted to heat, we can say that KE=Q and 1/2mV^2=cmT. We tin solve this equation for Temperature and enter our known values:
T=5^two/2c
T=(108)^2/(ii*4184)
T=1.iv deg C.
At a terminal velocity collision with the ground our chicken's temperature will raise by only 1.four degrees Celsius.
This is far from the 55 degree temperature increase we demand to be able to swallow it.
However there is a solution! When an object reaches terminal velocity, the friction with the air equals the pull of gravity down. Since air resistance increases with speed, the object cannot become whatsoever faster. Withal, the energy must become somewhere and is converted into rut!
Using this, nosotros can say that the "free energy" that an object would gain as information technology falls is converted directly into rut. This allows us to employ the formula for potential energy (PE=mgh; g=mass, g=gravity, h=pinnacle) and substitute potential energy with the amount of oestrus free energy we need (460 kJ).
Q=mgh
h=Q/mg
h=460,000/ii.0*ix.8
h= 23000m
There we go! If you drop a craven from 23km in the air, by the fourth dimension it hits the ground it volition be fully cooked!
Determination
While it appears that there are three possible ways of cooking a craven with kinetic free energy, I am skeptical that any of them will work. But! Permit me know if you plan on testing whatever of them– I would really like to witness a chicken colliding with the ground at final velocity.
Yous may go a cooked craven, yet I would venture to gauge it wouldn't be more mush by the fourth dimension y'all are washed with it. It certainly won't be more efficient than using an oven.
Happy cooking!
Nathan Van Rumpt
Source: https://www.futurescienceleaders.com/surrey1/2019/03/14/how-hard-do-you-have-to-hit-a-chicken-to-cook-it/#:~:text=A%20study%20of%20top%20Olympic,would%20be%20safe%20to%20eat.
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