Cuesta College, San Luis Obispo, CA
Sections 70854, 70855
Exam code: quiz07VlnC
Sections 70854, 70855 results
| 0- 6 : | * [low = 3] |
| 7-12 : | ********** |
| 13-18 : | ************** |
| 19-24 : | ******************* [mean = 18.9 +/- 6.2] |
| 25-30 : | ******* [high = 30] |
Showing posts with label heat capacity. Show all posts
Showing posts with label heat capacity. Show all posts
20191204
Physics quiz archive: temperature, thermal equilibrium, heat transfers
Physics 205A Quiz 7, fall semester 2019
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855
Exam code: quiz07VlnC
Sections 70854, 70855 results
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855
Exam code: quiz07VlnC
Sections 70854, 70855 results
20181205
Physics quiz archive: temperature, thermal equilibrium, heat transfers
Physics 205A Quiz 7, fall semester 2018
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, version 1
Exam code: quiz07PeA7
Sections 70854, 70855 results
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, version 1
Exam code: quiz07PeA7
Sections 70854, 70855 results
| 0- 6 : | ** [low = 6] |
| 7-12 : | **** |
| 13-18 : | *********** |
| 19-24 : | ********************** [mean = 20.8 +/- 6.0] |
| 25-30 : | ************ [high = 30] |
20171213
Physics quiz archive: temperature, thermal equilibrium, heat transfers
Physics 205A Quiz 7, fall semester 2017
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, version 1
Exam code: quiz07Whu7
Sections 70854, 70855 results
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, version 1
Exam code: quiz07Whu7
Sections 70854, 70855 results
| 0- 6 : | |
| 7-12 : | ******* [low = 9] |
| 13-18 : | ************* |
| 19-24 : | ******************* [mean = 18.9 +/- 5.4] |
| 25-30 : | *** [high = 27] |
20161207
Physics quiz archive: temperature, thermal equilibrium, heat transfer
Physics 205A Quiz 7, fall semester 2016
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz07p4sT
Sections 70854, 70855, 73320 results
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz07p4sT
Sections 70854, 70855, 73320 results
| 0- 6 : | * [low = 6] |
| 7-12 : | ************* |
| 13-18 : | *************** |
| 19-24 : | *************** [mean = 18.5 +/- 6.6] |
| 25-30 : | ******** [high = 30] |
20151211
Physics quiz archive: temperature, thermal equilibrium, heat transfer
Physics 205A Quiz 7, fall semester 2015
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz07zSOL
Sections 70854, 70855, 73320 results
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz07zSOL
Sections 70854, 70855, 73320 results
| 0- 6 : | * [low = 3] |
| 7-12 : | ***** |
| 13-18 : | ***************** |
| 19-24 : | ****************************** [mean = 21.2 +/- 5.6] |
| 25-30 : | **************** [high = 30] |
20141211
Physics quiz archive: temperature, thermal equilibrium, heat transfer
Physics 205A Quiz 7, fall semester 2014
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz07cO4t
Sections 70854, 70855, 73320 results
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz07cO4t
Sections 70854, 70855, 73320 results
| 0- 6 : | |
| 7-12 : | **** [low = 9] |
| 13-18 : | ******* |
| 19-24 : | ******************** [mean = 24.2 +/- 5.5] |
| 25-30 : | ********************** [high = 30] |
20131211
Physics quiz archive: temperature, thermal equilibrium, heat transfer
Physics 205A Quiz 7, fall semester 2013
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz07b0o7
Sections 70854, 70855, 73320 results
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz07b0o7
Sections 70854, 70855, 73320 results
| 0- 6 : | ** [low = 6] |
| 7-12 : | **** |
| 13-18 : | ****************************** [mean = 18.5 +/- 4.8] |
| 19-24 : | ******************** |
| 25-30 : | *** [high = 30] |
20121214
Physics quiz archive: temperature, thermal equilibrium, heat transfer
Physics 205A Quiz 7, fall semester 2012
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, version 1
Exam code: quiz07Di5k
Sections 70854, 70855 results
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, version 1
Exam code: quiz07Di5k
Sections 70854, 70855 results
| 0- 6 : | ***** [low = 3] |
| 7-12 : | ************ |
| 13-18 : | ********************** [mean = 15.2 +/- 5.4] |
| 19-24 : | *********** [high = 24] |
| 25-30 : |
20111214
Physics quiz archive: temperature, thermal equilibrium, heat transfer
Physics 205A Quiz 7, fall semester 2011
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, version 1
Exam code: quiz07n0N3
Sections 70854, 70855 results
Quiz 7 results (max score = 30):
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, version 1
Exam code: quiz07n0N3
Sections 70854, 70855 results
Quiz 7 results (max score = 30):
| 0- 6 : | * [low = 6] |
| 7-12 : | ******** |
| 13-18 : | ******************* |
| 19-24 : | *************** [mean = 19.2 +/- 5.7] |
| 25-30 : | ********* [high = 30] |
20080525
Physics clicker question: latent heat
Physics 5A, Spring Semester 2008
Cuesta College, San Luis Obispo, CA
Cf. Giambattista/Richardson/Richardson, Physics, 1/e, Multiple-Choice Question 14.4
Students were asked the following clicker question (Classroom Performance System, einstruction.com) near the start of their learning cycle:
[0.6 participation points.] The heat capacity of a material undergoing a phase change (such as melting/freezing, or boiling/condensing) is typically:
(A) 0.
(B) ∞.
(C) some finite number.
(D) (Not enough information is given.)
(E) (I'm lost, and don't know how to answer this.)
Sections 4987, 4988
(A) : 8 students
(B) : 7 students
(C) : 12 students
(D) : 1 student
(E) : 0 students
Correct answer: (B)
The heat capacity is given by:
C = Q/delta(T).
When heat is put into (or taken from) a system undergoing a phase change, the temperature remains constant, and thus the denominator is zero, making the heat capacity infinite. Thus a system undergoing a phase change cannot have a defined heat capacity, as the heat goes into breaking or making bonds, instead of increasing/decreasing the amount of thermal energy in the system. Instead, the latent heat is defined:
L = Q/m,
where m is the amount of material undergoing a phase change.
Cuesta College, San Luis Obispo, CA
Cf. Giambattista/Richardson/Richardson, Physics, 1/e, Multiple-Choice Question 14.4
Students were asked the following clicker question (Classroom Performance System, einstruction.com) near the start of their learning cycle:
[0.6 participation points.] The heat capacity of a material undergoing a phase change (such as melting/freezing, or boiling/condensing) is typically:
(A) 0.
(B) ∞.
(C) some finite number.
(D) (Not enough information is given.)
(E) (I'm lost, and don't know how to answer this.)
Sections 4987, 4988
(A) : 8 students
(B) : 7 students
(C) : 12 students
(D) : 1 student
(E) : 0 students
Correct answer: (B)
The heat capacity is given by:
C = Q/delta(T).
When heat is put into (or taken from) a system undergoing a phase change, the temperature remains constant, and thus the denominator is zero, making the heat capacity infinite. Thus a system undergoing a phase change cannot have a defined heat capacity, as the heat goes into breaking or making bonds, instead of increasing/decreasing the amount of thermal energy in the system. Instead, the latent heat is defined:
L = Q/m,
where m is the amount of material undergoing a phase change.
20071217
Physics clicker question: heat capacity during phase change
Physics 5A, Fall Semester 2007
Cuesta College, San Luis Obispo, CA
Cf. Giambattista/Richardson/Richardson, Physics, 1/e, Conceptual Question 13.11
Students were asked the following clicker question (Classroom Performance System, einstruction.com) at the beginning of their learning cycle:
[0.6 participation points.] The heat capacity of a material undergoing a phase change (such as melting/freezing, or boiling/condensing) is typically:
(A) zero.
(B) infinity.
(C) a finite number.
(D) (Not enough information is given.)
(E) (I'm lost, and don't know how to answer this.)
Sections 0906, 0907
(A) : 10 students
(B) : 12 students
(C) : 11 students
(D) : 0 students
(E) : 0 students
Correct answer: (B)
The heat capacity is defined as the ratio of the heat Q (put in) to the resulting temperature increase delta(T):
C = Q/delta(T).
But when heat is put into, or extracted from a system, its temperature remains constant, making delta(T) = 0, and thus its heat capacity will be undefined as it would approach infinity.
Cuesta College, San Luis Obispo, CA
Cf. Giambattista/Richardson/Richardson, Physics, 1/e, Conceptual Question 13.11
Students were asked the following clicker question (Classroom Performance System, einstruction.com) at the beginning of their learning cycle:
[0.6 participation points.] The heat capacity of a material undergoing a phase change (such as melting/freezing, or boiling/condensing) is typically:
(A) zero.
(B) infinity.
(C) a finite number.
(D) (Not enough information is given.)
(E) (I'm lost, and don't know how to answer this.)
Sections 0906, 0907
(A) : 10 students
(B) : 12 students
(C) : 11 students
(D) : 0 students
(E) : 0 students
Correct answer: (B)
The heat capacity is defined as the ratio of the heat Q (put in) to the resulting temperature increase delta(T):
C = Q/delta(T).
But when heat is put into, or extracted from a system, its temperature remains constant, making delta(T) = 0, and thus its heat capacity will be undefined as it would approach infinity.
20071213
Physics clicker question, movie: Space Shuttle tile
Physics 5A, Fall Semester 2007
Cuesta College, San Luis Obispo, CA
Cf. Giambattista/Richardson/Richardson, Physics, 1/e, Conceptual Question 13.9 (extended)
Students were asked the following clicker question (Classroom Performance System, einstruction.com) at the beginning of their learning cycle:
[0.6 participation points.] A 50 g Space Shuttle heat tile, and a 50 g iron sample each absorb an equal amount of heat from a bunsen burner. Which sample will have a greater increase in temperature?
(A) Space Shuttle tile.
(B) 50 g iron sample.
(C) (Both samples will have approximately the same increase in temperature.)
(D) (I'm lost, and don't know how to answer this.)
Sections 0906, 0907
(A) : 0 students
(B) : 26 students
(C) : 3 students
(D) : 0 students
Correct answer: (B)
The heat capacity is defined as the ratio of the heat Q (put in) to the resulting temperature increase delta(T):
C = Q/delta(T).
The Space Shuttle TPS (thermal protection tile) has a larger heat capacity, as it experiences a small increase in temperature for a given amount of heat, while the iron sample has a smaller heat capacity, experiencing a large increase in temperature with the same amount of heat.
Space Shuttle Thermal Protection System (TPS) Tile
Posted by ntschke
http://www.youtube.com/watch?v=XuSlkEob-3w
Do not touch the tile immediately after heating!
Cuesta College, San Luis Obispo, CA
Cf. Giambattista/Richardson/Richardson, Physics, 1/e, Conceptual Question 13.9 (extended)
Students were asked the following clicker question (Classroom Performance System, einstruction.com) at the beginning of their learning cycle:
[0.6 participation points.] A 50 g Space Shuttle heat tile, and a 50 g iron sample each absorb an equal amount of heat from a bunsen burner. Which sample will have a greater increase in temperature?
(A) Space Shuttle tile.
(B) 50 g iron sample.
(C) (Both samples will have approximately the same increase in temperature.)
(D) (I'm lost, and don't know how to answer this.)
Sections 0906, 0907
(A) : 0 students
(B) : 26 students
(C) : 3 students
(D) : 0 students
Correct answer: (B)
The heat capacity is defined as the ratio of the heat Q (put in) to the resulting temperature increase delta(T):
C = Q/delta(T).
The Space Shuttle TPS (thermal protection tile) has a larger heat capacity, as it experiences a small increase in temperature for a given amount of heat, while the iron sample has a smaller heat capacity, experiencing a large increase in temperature with the same amount of heat.
Space Shuttle Thermal Protection System (TPS) Tile
Posted by ntschke
http://www.youtube.com/watch?v=XuSlkEob-3w
Do not touch the tile immediately after heating!
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