Physics quiz archive: capacitors, circuits (2)

Physics 205B Quiz 5, spring semester 2012
Cuesta College, San Luis Obispo, CA

Section 30882, version 1
Exam code: quiz05Vo7x

Section 30882 results
Quiz 5 results (max score = 30):

0- 6 :	*** [low = 6]
7-12 :	*******
13-18 :	******** [mean = 16.2 +/- 6.7]
19-24 :	*****
25-30 :	*** [high = 30]

Physics quiz quesiton: light bulb power dissipation in circuit

Physics 205B Quiz 5, spring semester 2012
Cuesta College, San Luis Obispo, CA

Cf. Giambattista/Richardson/Richardson, Physics, 2/e, Problem 18.65(e)

An ideal 12 V emf source is connected to two 1.6 Ω resistors, a 7.0 Ω resistor, and two ideal voltmeters, as shown at right. Which light bulb is brighter?
(A) Bulb 1.
(B) Bulb 2.
(C) (There is a tie, but both bulbs are completely dead.)
(D) (There is a tie, with both bulbs lit.)

Correct answer: (D)

The two light bulbs are in series with each other, such that there is the same amount of current I passing through both. (The voltmeters are ideal and have infinite resistance, such that no current will be diverted away from bulb 2). Thus the power dissipated by the bulbs will be the same:

P = I²*R.

Section 30882
Exam code: quiz05Vo7x
(A) : 12 students
(B) : 1 student
(C) : 1 student
(D) : 12 students

Success level: 46%
Discrimination index (Aubrecht & Aubrecht, 1983): 0.58

Astronomy quiz archive: stellar evolution

Astronomy 210 Quiz 5, spring semester 2012
Cuesta College, San Luis Obispo, CA

Section 30674, version 1
Exam code: quiz05nArf
Section 30674

0- 8.0 :	* [low = 7.0]
8.5-16.0 :	*****
16.5-24.0 :	********* [mean = 23.1 +/- 6.9]
24.5-32.0 :	**************
32.5-40.0 :	*** [high = 36.5]

Section 30676, version 1
Exam code: quiz05spH3
Section 30676

0- 8.0 :	** [low = 7.0]
8.5-16.0 :	*******
16.5-24.0 :	**************** [mean = 21.2 +/- 6.8]
24.5-32.0 :	************
32.5-40.0 :	* [high = 40.0]

Physics quiz archive: capacitors, circuits

Physics 205B Quiz 4, spring semester 2012
Cuesta College, San Luis Obispo, CA

Section 30882, version 1
Exam code: quiz04j0uL

Section 30882 results
Quiz 4 results (max score = 30):

0- 6 :	* [low = 6]
7-12 :	****
13-18 :	********
19-24 :	***** [mean = 20.0 +/- 6.8]
25-30 :	******** [high = 30]

Astronomy quiz archive: sun/spectra/star properties

Astronomy 210 Quiz 4, spring semester 2012
Cuesta College, San Luis Obispo, CA

Section 30674, version 1
Exam code: quiz04noR3
Section 30674

0- 8.0 :
8.5-16.0 :	*** [low = 13.0]
16.5-24.0 :	*******
24.5-32.0 :	************* [mean = 26.4 +/- 6.2]
32.5-40.0 :	******** [high = 36.5]

Section 30676, version 1
Exam code: quiz04sLO8
Section 30676

0- 8.0 :
8.5-16.0 :	*** [low = 12.0]
16.5-24.0 :	******************** [mean = 22.3 +/- 6.3]
24.5-32.0 :	********
32.5-40.0 :	**** [high = 40.0]

Physics quiz archive: lenses, optical instruments

Physics 205B Quiz 2, spring semester 2012
Cuesta College, San Luis Obispo, CA

Section 30882, version 1
Exam code: quiz02gL4s
Section 30882 results
Quiz 2 results (max score = 30):

0- 6 :	** [low = 6]
7-12 :	*****
13-18 :	****
19-24 :	********* [mean = 18.6 +/- 7.7]
25-30 :	**** [high = 30]

Found astronomy: astrology, or astronomy?

14327646.jpg
http://memegenerator.net/instance/14327646

"Futurama Fry Not Sure If..." meme to be shown on the first day of class...

Astronomy quiz archive: eclipses/history of astronomy

Astronomy 210 Quiz 2, spring semester 2012
Cuesta College, San Luis Obispo, CA

Section 30674, version 1
Exam code: quiz02n0Is
Section 30674

0- 8.0 :	*** [low = 6.5]
8.5-16.0 :	*******
16.5-24.0 :	************ [mean = 20.5 +/- 7.1]
24.5-32.0 :	**********
32.5-40.0 :	** [high = 33.0]

Section 30676, version 1
Exam code: quiz02SnT4
Section 30676

0- 8.0 :	**** [low = 3.5]
8.5-16.0 :	*******
16.5-24.0 :	***************** [mean = 21.0 +/- 8.6]
24.5-32.0 :	*************
32.5-40.0 :	****** [high = 40.0]

Physics quiz archive: electromagnetic waves, reflection/refraction

Physics 205B Quiz 1, spring semester 2012
Cuesta College, San Luis Obispo, CA

Section 30882, version 1
Exam code: quiz01pL2r
Section 30882 results
Quiz 1 results (max score = 30):

0- 6 :
7-12 :	** [low = 9]
13-18 :	**********
19-24 :	***** [mean = 22.4 +/- 6.5]
25-30 :	************ [high = 30]

Astronomy quiz archive: stars/sun/seasons/moon phases

Astronomy 210 Quiz 1, fall semester 2012
Cuesta College, San Luis Obispo, CA

Section 30674, version 1
Exam code: quiz01n3Wb
Section 30674

0- 8.0 :	** [low = 7.0]
8.5-16.0 :	***
16.5-24.0 :	************
24.5-32.0 :	*********** [mean = 24.7 +/- 7.9]
32.5-40.0 :	******* [high = 40.0]

Section 30676, version 1
Exam code: quiz01sH0p

Section 30676

0- 8.0 :	** [low = 7.5]
8.5-16.0 :	*******
16.5-24.0 :	***********
24.5-32.0 :	**************** [mean = 25.4 +/- 9.0]
32.5-40.0 :	************ [high = 40.0]