Physics quiz archive: simple harmonic motion, waves

Physics 205A Quiz 6, fall semester 2019
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855 version 1
Exam code: quiz06co6O



Sections 70854, 70855 results

0- 6 :	* [low = 3]
7-12 :	****
13-18 :	*************
19-24 :	**************** [mean = 22.1 +/- 6.1]
25-30 :	****************** [high = 30]

Physics quiz archive: simple harmonic motion, waves

Physics 205A Quiz 6, fall semester 2018
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855 version 1
Exam code: quiz06POr7



Sections 70854, 70855 results

0- 6 :
7-12 :	**** [low = 9]
13-18 :	********
19-24 :	********************* [mean = 23.3 +/- 5.6]
25-30 :	******************** [high = 30]

Physics quiz archive: simple harmonic motion, waves

Physics 205A Quiz 6, fall semester 2017
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855 version 1
Exam code: quiz06Ho0k


Sections 70854, 70855 results

0- 6 :	* [low = 6]
7-12 :	*
13-18 :	*********
19-24 :	************* [mean = 23.3 +/- 5.8]
25-30 :	********************* [high = 30]

Physics quiz archive: simple harmonic motion

Physics 205A Quiz 6, fall semester 2016
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz06rn3T



Sections 70854, 70855, 73320 results

0- 6 :
7-12 :	** [low = 9]
13-18 :	*********
19-24 :	*************************** [mean = 22.9 +/- 4.6]
25-30 :	**************** [high = 30]

Physics quiz archive: simple harmonic motion

Physics 205A Quiz 6, fall semester 2015
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz06m45S



Sections 70854, 70855, 73320 results

0- 6 :
7-12 :	** [low = 12]
13-18 :	**********
19-24 :	***************************** [mean = 24.2 +/- 4.7]
25-30 :	******************************** [high = 30]

Physics quiz archive: simple harmonic motion, waves

Physics 205A Quiz 6, fall semester 2014
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz06eAg7



Sections 70854, 70855, 73320 results

0- 6 :
7-12 :	***** [low = 12]
13-18 :	**********
19-24 :	********************** [mean = 23.3 +/- 5.3]
25-30 :	*************************** [high = 30]

Physics quiz archive: simple harmonic motion, waves

Physics 205A Quiz 6, fall semester 2013
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz06wR3k



Sections 70854, 70855, 73320 results

0- 6 :	* [low = 3]
7-12 :	**************
13-18 :	********************************** [mean = 15.5 +/- 5.2]
19-24 :	**********
25-30 :	** [high = 27]

Physics quiz archive: simple harmonic motion, waves

Physics 205A Quiz 6, fall semester 2012
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, version 1
Exam code: quiz06How3



Sections 70854, 70855 results

0- 6 :
7-12 :	** [low = 12]
13-18 :	*************
19-24 :	******************* [mean = 22.4 +/- 4.8]
25-30 :	************ [high = 30]

Physics quiz archive: simple harmonic motion, waves

Physics 205A Quiz 6, fall semester 2011
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, version 1


Sections 70854, 70855 results
Exam code: quiz06w4VE

 0- 6 : **  [low = 6]
 7-12 : ********
13-18 : ***************
19-24 : ********************  [mean = 19.2 +/- 5.2]
25-30 : ********  [high = 30]

Astronomy clicker question: Milky Way mass

Astronomy 210, Fall Semester 2008
Cuesta College, San Luis Obispo, CA

Students were asked the following clicker question (Classroom Performance System, einstruction.com) at the end of their learning cycle:

The total mass of the Milky Way can be estimated by:
(A) observing how quickly or slowly stars at different distances orbit its center.
(B) observing how quickly the supermassive black hole at its center is growing.
(C) carefully counting all the stars in the night sky.
(D) timing all of the Cepheid variable stars in the halo.
(E) (I'm lost, and don't know how to answer this.)

Section 70160
(A) : 14 students
(B) : 6 students
(C) : 0 students
(D) : 7 students
(E) : 0 students

Correct answer: (A)

Kepler's third law would be used to determine the total mass of the Milky Way. (This clicker question sets up the introduction of dark matter.) Response (D) would determine the luminosity of the Cepheid variable stars, from which the their distances could be found, resulting in the distance of the sun from the center of the Milky Way. Response (B) is a somewhat fanciful notion.

Astronomy quiz question: mass, densities, and event horizons

Astronomy 10 Quiz 10, Spring Semester 2008
Cuesta College, San Luis Obispo, CA

Astronomy 10 learning goal Q10.1

[3.0 points.] Which one of the following choices best explains why a black hole is the only object that can have an event horizon?
(A) It has zero density.
(B) It has infinite mass.
(C) It has zero size.
(D) It has infinite energy.
(E) It can distort spacetime.

Correct answer: (C)

Section 4160
(A) : 5 students
(B) : 7 students
(C) : 15 students
(D) : 1 students
(E) : 2 students

Section 5166
(A) : 6 students
(B) : 16 students
(C) : 11 students
(D) : 3 students
(E) : 5 students

Previous posts:
Astronomy clicker question: masses, densities, and event horizons.
Astronomy in-class activity: masses, densities, and escape velocities.

Astronomy clicker question: masses, densities, and event horizons

Astronomy 10, Spring Semester 2008
Cuesta College, San Luis Obispo, CA

Astronomy 10 learning goal Q10.1

Students were asked the following clicker question (Classroom Performance System, einstruction.com) near the end of their learning cycle (specifically, following the astronomy in-class activity: masses, densities, and escape velocities).

[0.3 points.] Why is a black hole the only object that has an event horizon?
(A) Because of its mass.
(B) Because of its density.
(C) Because of both its mass and density.
(D) (Neither its mass nor density matters.)

Correct answer: (B)

Student responses
Section 5166
(A) : 1 student
(B) : 21 students
(C) : 14 students
(D) : 3 students

Astronomy in-class activity: masses, densities, and escape velocities

Astronomy 10 In-class activity 23 v.07.04.25, Spring Semester 2008
Cuesta College, San Luis Obispo, CA

Astronomy 10 learning goal Q10.1

Students find their assigned groups of three to four students, and work cooperatively on an in-class activity worksheet to determine the relationship between the escape velocity with mass and/or density.

Start off with filling some of the entries for the students, before they start working in their groups. The main sequence star on the left is the smallest and least massive of the main sequence stars: "G2," "1.0 M_Sun." Point out the progression in increasing size and mass of the main sequence stars, from right-to-left. Also point out the progression in decreasing size from left-to-right for the compact objects, and also the increasing escape velocities. Undoubtably the compact object with zero size and an infinite escape velocity is the black hole.
There will be several ties for the list of increasing masses:

G2 = white dwarf; A3 = neutron star; B3 = black hole.

However, there is no trend in escape velocities for this list, such that there is no relationship between the mass and escape velocity.

There are also several (approximate) ties for the list of increasing densities:

G2 = A3 = B3; white dwarf, neutron star; black hole.

Since the escape velocities also increase from left-to-right along this list, there is a direct relationship between the density of an object and its escape velocity.

Follow-up post: Astronomy clicker question: masses, densities, and event horizons.