here's one for ya

[acolyte_to_jippity]

that'd be the answer if it were a riddle, as mentioned above. but he wanted equations and stuff. if only...

mechanical engineering.

assume that it's on the second floor, so about 10 feet, approximate to 3 meters.

now, we know the distance (roughly) the oil would drop, therefore we can calculate the kinetic energy it will have at contact with ground. factoring that into the known specific heat of oil, and extrapolating that value for a single gram (not kilogram) you can figure out exactly how much of a heat gain the oil experienced. now, since this will be a very small number, and since it is a logical assumption that:
A) the delivery man is taller than 0 cm in height
and
B) the oil drop was less than 1 gram
you can infer that the heat gain you calculated is too high, and since it will be very very low anyway, the oil would not gain enough heat to cause harm.

[brett friggin favre]

mechanical engineering.

assume that it's on the second floor, so about 10 feet, approximate to 3 meters.

now, we know the distance (roughly) the oil would drop, therefore we can calculate the kinetic energy it will have at contact with ground. factoring that into the known specific heat of oil, and extrapolating that value for a single gram (not kilogram) you can figure out exactly how much of a heat gain the oil experienced. now, since this will be a very small number, and since it is a logical assumption that:
A) the delivery man is taller than 0 cm in height
and
B) the oil drop was less than 1 gram
you can infer that the heat gain you calculated is too high, and since it will be very very low anyway, the oil would not gain enough heat to cause harm.

it wouldnt reach the velocity of 200 kph in a 2 story drop, and that uses no equations. yes it's logical, but my complaint is that he wanted us to use equations with numbers to prove it mathematically.

[Nemesis]

No it would not burn him. If he's eating a salad you have to mix the olive oil with vinegar for the dressing. if you heat vinegar you destroy the yeast in it and you cant eat it.

Unless the man eating salad was black. if he was then yes, it would be all his fault.

[christopher]

olive oil is not a great liquid phase heat transfer fluid. it has a high specific heat index greater than other normal and approximately equivalent molecular compounds.


it also has a very high viscosity ratio (compared to water and other oils), thus it is a greatly inefficient transfer fluid.


it's film coefficient is pretty low.



what does this mean? you'd need a lot of oil and a lot of time to transfer 50% of the heat of the oil to the scalp.



i'd use the film coefficient formula to explain how it'd be impossible to burn from just one drop.

[ZERO]

just took a test, and we had to solve this:

a guy's eating a salad on his balcony and unknowingly drips a drop of olive oil onto a pizza delivery man below, who sues for $10m because he claims the olive oil burned his scalp. prove that this is not possible

we were told to ignore heat loss to the air while falling, heat gain due to friction, and were not given a starting temperature or the temperature needed to burn the human scalp. we were given the specific heat of the oil as 1.97 kj/kg*°K.

this is an introduction to mechanical engineering course. i repeat, INTRODUCTION. the prof used to teach thermodynamics at MIT. now if i was in thermodynamics at MIT i bet i could figure this out, but for an INTRO TO FUCKING MECHANICAL ENGINEERING COURSE i think this is a bit absurd.

It is not possible becuase any judge would have reduced the amount prior to the case. Therefore it is not possible to sue for $10m. A little more legal knowledge makes this much faster to solve.

Also it is not possible becuase olive oil is used as a hair treatment which works as a conditioner so if anything the delivery man would have a healthier scalp as a result of this.

[ZERO]

E_k = ½ mv<sup>2

200KPH = 55.5m/s

m=1g or .001kg

so
.5(.001)55.5^2= 1.540125J</sup>

1 joule is equal to 0.000526565076466 celsius

<sup>so

1.540125*</sup>0.000526565076466= 0.0008109760383921982C

Therefore the maximum amount the scalp could have been increased in temp above it's existing ambient is 0.0008109760383921982C and that assumes that all the kinetic force was converted to heat.

Note that you should also be able to calculate the mass exactly becuase you have the terminal velocity.

Actually lets solve b/c he said to ignore drag and other things which leave us with:
sqrt(2mg)=V

So 55.5=sqrt(2m9.8) or 3080.25/19.6=m or 157.1556Kg wait a second...

Either my math is wrong or his claim that the object was moving at 200KPH is wrong or it is not a drop. The question is wrong b/c the conditions of the question create a logical conflict. He forgot I think to calculate in that he said not to factor any resistance of the object falling. This would therefore change what he needs to report as the terminal velocity as it will be different depending on the object. Still though you can do a new calculation even with a 157Kg "drop" and show it can not generate enough heat above ambient.

[taz1stP]

No it would not burn him. If he's eating a salad you have to mix the olive oil with vinegar for the dressing. if you heat vinegar you destroy the yeast in it and you cant eat it.

Unless the man eating salad was black. if he was then yes, it would be all his fault.

cant be a black person who was eatting it just hit a black guy so it was racist if they said it wasn't his fault.

[SCRIBBLE]

cant be a black person who was eatting it just hit a black guy so it was racist if they said it wasn't his fault.

This is a typical Cyber post, which on average is longer than a PhD dissertation, condensed into one patchy, ignorant statement. You two (cyber and taz) crack me up.

[Fluffy Frufflebottoms]

It's impossible because there's no such thing as degrees Kelvin.

[CYBER]

This is a typical Cyber post, which on average is longer than a PhD dissertation, condensed into one patchy, ignorant statement. You two (cyber and taz) crack me up.

hey fuck you! lol...
i just make sure im thourough bcos i hate being called for to explain a point or issue or problem after i make my post.
plus, it helps me filter out the flamers bcos lets face it, unless u;re rly dedicated, you would never read my goddamn posts
its a win in my book.