Thermodynamics B/C

Test your knowledge of various Science Olympiad events.
Locked
User avatar
WhatScience?
Member
Member
Posts: 395
Joined: July 16th, 2017, 4:03 pm
Division: C
State: NJ
Has thanked: 0
Been thanked: 0

Thermodynamics B/C

Post by WhatScience? » September 5th, 2017, 5:45 am

I do not know what happened to this but 2018!!! Thermo!!!!

User avatar
WhatScience?
Member
Member
Posts: 395
Joined: July 16th, 2017, 4:03 pm
Division: C
State: NJ
Has thanked: 0
Been thanked: 0

Re: Thermodynamics B/C

Post by WhatScience? » September 5th, 2017, 5:56 am

A person wants to replace the window on their house, but they don't want their heating and cooling bills to change. The original window on the wall of the house has area A, thickness d, and is made out of glass that has a thermal conduction constant k. Which one of the following changes could be made to the window that would leave the rate of thermal conduction the same as the original window?

A: double the area, cut the thickness in half, cut the k constant in half

B: cut the area in half, cut the thickness in half, and double the k constant

C: quadruple the area, double the thickness, cut the k constant in half

D: double the area, double the thickness, quadruple the k constant

User avatar
EastStroudsburg13
Administrator
Administrator
Posts: 3155
Joined: January 17th, 2009, 7:32 am
Division: Grad
State: MD
Pronouns: He/Him/His
Location: At work trying to be a real adult
Has thanked: 18 times
Been thanked: 119 times
Contact:

Re: Thermodynamics B/C

Post by EastStroudsburg13 » September 5th, 2017, 5:58 am

WhatScience? wrote:I do not know what happened to this but 2018!!! Thermo!!!!
When site rollover occurs from the 2017 to 2018 seasons, the old event threads get archived so that new threads can be created. This is done so that discussions about new rules and updates can happen in their own threads, as opposed to continuations of threads from the previous year.
East Stroudsburg South Class of 2012, Alumnus of JT Lambert, Drexel University Class of 2017

Helpful Links
Wiki
Wiki Pages that Need Work
FAQ and SciOly FAQ Wiki
Chat (See IRC Wiki for more info)
BBCode Wiki


So long, and thanks for all the Future Dictator titles!

User avatar
WhatScience?
Member
Member
Posts: 395
Joined: July 16th, 2017, 4:03 pm
Division: C
State: NJ
Has thanked: 0
Been thanked: 0

Re: Thermodynamics B/C

Post by WhatScience? » September 5th, 2017, 6:03 am

EastStroudsburg13 wrote:
WhatScience? wrote:I do not know what happened to this but 2018!!! Thermo!!!!
When site rollover occurs from the 2017 to 2018 seasons, the old event threads get archived so that new threads can be created. This is done so that discussions about new rules and updates can happen in their own threads, as opposed to continuations of threads from the previous year.
Oh, thx.

User avatar
WhatScience?
Member
Member
Posts: 395
Joined: July 16th, 2017, 4:03 pm
Division: C
State: NJ
Has thanked: 0
Been thanked: 0

Re: Thermodynamics B/C

Post by WhatScience? » September 6th, 2017, 5:46 pm

WhatScience? wrote:A person wants to replace the window on their house, but they don't want their heating and cooling bills to change. The original window on the wall of the house has area A, thickness d, and is made out of glass that has a thermal conduction constant k. Which one of the following changes could be made to the window that would leave the rate of thermal conduction the same as the original window?

A: double the area, cut the thickness in half, cut the k constant in half

B: cut the area in half, cut the thickness in half, and double the k constant

C: quadruple the area, double the thickness, cut the k constant in half

D: double the area, double the thickness, quadruple the k constant
ummm Guys

wzhang5460
Member
Member
Posts: 89
Joined: April 29th, 2017, 3:53 pm
Division: B
State: NY
Has thanked: 0
Been thanked: 0

Re: Thermodynamics B/C

Post by wzhang5460 » September 7th, 2017, 6:19 pm

D
Credits to Khan Academy lol.

Who was the scientist who came up with the basic ideas of the Second Law of Thermodynamics?
Circuit Lab NY State Champion with legendary circuitologist Eric Wang
LONGEST DEFENDING ROCKS AND MINERALS REGIONAL CHAMPION OF EASTERN LONG ISLAND IN HISTORY ~3 YEARS AND COUNTING

User avatar
WhatScience?
Member
Member
Posts: 395
Joined: July 16th, 2017, 4:03 pm
Division: C
State: NJ
Has thanked: 0
Been thanked: 0

Re: Thermodynamics B/C

Post by WhatScience? » September 8th, 2017, 1:48 pm

Rudolf Julius Emanuel Clausis

A steel part that has the temperature of 700 degrees C is put into an oil bath to cool down. The bath must operate in between 25 and 30 degrees C. You want to use the smallest amount of oil possible to cool down the part. If the oil bath is starts at 25 C, what is the minimum amount of oil required of quench a steel part that is 175 grams?

specific heat of oil = 0.5 calories/gram C

specific heat of steel = 0.107 calories/gram C

User avatar
Alex-RCHS
Member
Member
Posts: 536
Joined: November 4th, 2016, 3:46 pm
Division: C
State: NC
Location: Raleigh, NC
Has thanked: 0
Been thanked: 0

Re: Thermodynamics B/C

Post by Alex-RCHS » September 8th, 2017, 6:36 pm

WhatScience? wrote:Rudolf Julius Emanuel Clausis

A steel part that has the temperature of 700 degrees C is put into an oil bath to cool down. The bath must operate in between 25 and 30 degrees C. You want to use the smallest amount of oil possible to cool down the part. If the oil bath is starts at 25 C, what is the minimum amount of oil required of quench a steel part that is 175 grams?

specific heat of oil = 0.5 calories/gram C

specific heat of steel = 0.107 calories/gram C
5018.3g
Next question: Explain the 0th law of thermodynamics.
I have the ACT tomorrow why am I doing this lol
About me!
Raleigh Charter HS (NC) 2018
UNC-Chapel Hill 2022

User avatar
WhatScience?
Member
Member
Posts: 395
Joined: July 16th, 2017, 4:03 pm
Division: C
State: NJ
Has thanked: 0
Been thanked: 0

Re: Thermodynamics B/C

Post by WhatScience? » September 9th, 2017, 6:44 am

If thermodynamic system a is in equilibrium with thermodynamic system c, and thermodynamic system c is in equilibrium with thermodynamic system b, thermodynamic systems a and b are also in equilibrium.

User avatar
WhatScience?
Member
Member
Posts: 395
Joined: July 16th, 2017, 4:03 pm
Division: C
State: NJ
Has thanked: 0
Been thanked: 0

Re: Thermodynamics B/C

Post by WhatScience? » September 9th, 2017, 6:45 am

Explain the difference in between entropy driven and enthalpy driven reactions.

Locked

Return to “2018 Question Marathons”

Who is online

Users browsing this forum: No registered users and 2 guests