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Physics 16 Online
zarkam21:

Help please is this B

zarkam21:

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sillybilly123:

|dw:1519825721157:dw| |dw:1519825786896:dw|

zarkam21:

C?

zarkam21:

@Vocaloid

Vocaloid:

|dw:1519838602832:dw|

Vocaloid:

(you had the right idea the first time it's potential energy fro intermolecular forces since solid molecules tend to have little movement/KE)

zarkam21:

So it is b

Vocaloid:

yes

Vocaloid:

I think a lot of people tend to gloss over the opening post ^^" myself included

zarkam21:

Lol yeah you've mentioned that a few times

zarkam21:

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zarkam21:

B

Vocaloid:

perfect

zarkam21:

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zarkam21:

Solid

Vocaloid:

not quite, solids can be insulators if they don't have mobilized electrons plasma which is defined as an ionized gas will theoretically be able to conduct electricity at all times making it the best answer

Vocaloid:

so a

zarkam21:

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zarkam21:

C

Vocaloid:

I got something a little different (these are atoms/molecules so the velocities are expected to be very high) (1/2)(0.015)v^2 = (3/2)(1.5)(8.31)(278) v = ?

Vocaloid:

sorry made a typo

zarkam21:

B

Vocaloid:

good, well done

zarkam21:

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Vocaloid:

any ideas or at least some possibilities to eliminate? try to think about what conditions heat is transferred between objects

zarkam21:

Um either c ro d

Vocaloid:

heat transfer is only dependent on temperature (mass is not directly involved) so D

zarkam21:

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zarkam21:

B

Vocaloid:

good

zarkam21:

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Vocaloid:

first convert 25 Deg Celcius to Kelvin, then plug into U = (5/2)nRT

Vocaloid:

n is the number of moles (3.00) R is given as the gas constant 8.31, T is (25 + 273)K, find U

Vocaloid:

U = (5/2)(3.00)(8.31)(25 + 273) = ?

zarkam21:

C

Vocaloid:

good

Vocaloid:

anyway I have my volunteer work to do see ya

sillybilly123:

if it's me, i didn't skim over the qu. i just didn't want to say YES cos that is feeding. IMHO :) so i threw out a really brilliant, free resource, which is HyperPhysics. which supported the answer. 🤕

Vocaloid:

ah, I see, my misunderstanding

sillybilly123:

it was MY misunderstanding, if you don't mind, Voca. i will try to amend my mindset :)

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