Showing posts with label gravity. Show all posts
Showing posts with label gravity. Show all posts

20190924

Physics quiz archive: vectors, projectile motion, forces

Physics 205A Quiz 3, fall semester 2019
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855
Exam code: quiz03Ch3V



Sections 70854, 70855 results
0- 6 :   * [low = 6]
7-12 :   ***
13-18 :   **************
19-24 :   ******************* [mean = 21.7 +/- 5.8]
25-30 :   ***************** [high = 30]

20190909

Physics quiz archive: kinematics, free fall

Physics 205A Quiz 2, fall semester 2019
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855
Exam code: quiz02Cs1o



Sections 70854, 70855 results
0- 6 :  
7-12 :   ******** [low = 9]
13-18 :   ************
19-24 :   ****************** [mean = 21.1 +/- 6.0]
25-30 :   **************** [high = 30]

20180924

Physics quiz archive: vectors, projectile motion, forces

Physics 205A Quiz 3, fall semester 2018
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855 version 1
Exam code: quiz03pRH5



Sections 70854, 70855 results
0- 6 :  
7-12 :   ***** [low = 9]
13-18 :   **********
19-24 :   ******************* [mean = 23.1+/- 6.0]
25-30 :   ********************** [high = 30]

20180910

Physics quiz archive: kinematics, free fall

Physics 205A Quiz 2, fall semester 2018
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855 version 1
Exam code: quiz02HwRd



Sections 70854, 70855 results
0- 6 :   ** [low = 6]
7-12 :   ******
13-18 :   *************
19-24 :   ******************** [mean = 20.4 +/- 6.1]
25-30 :   *********** [high = 30]

20171003

Physics quiz archive: vectors, projectile motion, forces

Physics 205A Quiz 3, fall semester 2017
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855 version 1
Exam code: quiz03T4uC



Sections 70854, 70855 results
0- 6 :  
7-12 :   ********* [low = 9]
13-18 :   ****************
19-24 :   *********************** [mean = 19.2 +/- 5.2]
25-30 :   ****** [high = 27]

20170919

Physics quiz archive: kinematics, free fall

Physics 205A Quiz 2, fall semester 2017
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855 version 1
Exam code: quiz02BjRn



Sections 70854, 70855 results
0- 6 :   * [low = 6]
7-12 :   ******
13-18 :   ************
19-24 :   **************** [mean = 22.0 +/- 6.5]
25-30 :   ********************* [high = 30]

20160926

Physics quiz archive: vectors, projectile motion, forces

Physics 205A Quiz 3, fall semester 2016
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz03sHO7



Sections 70854, 70855, 73320 results
0- 6 :   ********** [low = 0]
7-12 :   ************************* [mean = 12.7 +/- 5.4]
13-18 :   **********
19-24 :   ******* [high = 24]
25-30 :  

20160913

Physics quiz archive: kinematics, free fall

Physics 205A Quiz 2, fall semester 2016
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz02SL1p


Sections 70854, 70855, 73320 results
0- 6 :  
7-12 :   ********* [low = 9]
13-18 :   ************
19-24 :   ******************** [mean = 21.4 +/- 6.2]
25-30 :   ****************** [high = 30]

20150930

Physics quiz archive: vectors, projectile motion, forces

Physics 205A Quiz 3, fall semester 2015
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz03re3T



Sections 70854, 70855, 73320 results
0- 6 :   * [low = 6]
7-12 :   *
13-18 :   *******************
19-24 :   ****************************** [mean = 22.4 +/- 4.9]
25-30 :   ********************** [high = 30]

20140930

Physics quiz archive: vectors, projectile motion, forces

Physics 205A Quiz 3, fall semester 2014
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz03fkfs



Sections 70854, 70855, 73320 results
0- 6 :   **** [low = 3]
7-12 :   *********
13-18 :   ***************************** [mean = 18.4 +/- 6.1]
19-24 :   **********************
25-30 :   ******** [high = 30]

20131003

Physics quiz archive: vectors, projectile motion, forces

Physics 205A Quiz 3, fall semester 2013
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz03eL3v


Sections 70854, 70855, 73320 results
0- 6 : ** [low = 6]
7-12 : ********************
13-18 : *************************** [mean = 16.6 +/- 5.2]
19-24 : ****************
25-30 : ***** [high = 27]

20130917

Physics quiz archive: kinematics, free fall

Physics 205A Quiz 2, fall semester 2013
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, 73320, version 1
Exam code: quiz02p3nG


Sections 70854, 70855, 73320 results
0- 6 : * [low = 6]
7-12 : *********
13-18 : *********************
19-24 : ************************ [mean = 20.0 +/- 5.9]
25-30 : ************** [high = 30]

20130911

Whiteboard: lecture notes on forces, interactions

20121002

Physics quiz archive: vectors, projectile motion, forces

Physics 205A Quiz 3, fall semester 2012
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, version 1
Exam code: quiz03sQr7



Sections 70854, 70855 results
0- 6 : * [low = 6]
7-12 : ***
13-18 : ***********************
19-24 : ********************** [mean = 19.3 +/- 4.7]
25-30 : ****** [high = 30]

20120919

Physics quiz archive: kinematics, free fall

Physics 205A Quiz 2, fall semester 2012
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, version 1
Exam code: quiz02Bo74Sections 70854, 70855
0- 6 : ****** [low = 3]
7-12 : ****************
13-18 : ********************* [mean = 15.3 +/- 6.1]
19-24 : ***********
25-30 : **** [high = 27]

20111230

Astronomy haiku: dark matter

Astronomy 210 Haiku review, fall semester 2011
Cuesta College, San Luis Obispo, CA

Students find their assigned groups of three to four students, and work cooperatively on an worksheet to review for a midterm.

Identify the relevant astronomy concept/answer for this haiku. Briefly explain your choice. Partial credit possible.
Surrounding halo,
invisible gravity.
Holds Milky Way tight.
http://twitter.com/#!/Patrick_M_Len/status/72024267604234240
Concept: __________
Explanation: __________

Section 70160
"Dark matter--Evidence that extra mass lies in extended halo sometimes called dark halo. Not luminous matter detected by its gravitational force."

"Dark matter--No one has seen dark matter because it doesn't give off light, but it creates gravity, so we know it exists."

"Dark matter--Proves Kepler's third law wrong because stars farther out do not move slower because there is no center of gravity."

"Dark matter--Dark matter is gravity that holds the Milky Way together and is unable to be seen."

"Dark matter--The Milky Way doesn't follow Kepler's third law."

"Dark matter--Dark matter is invisible and it holds everything inside the Milky Way."

"Dark matter--Dark matter holds the Milky Way together."
Section 70158
"Dark matter--That's what holds the Milky Way together."

"Monolithic collapse--flattens out over time with halo making disk left."

"Dark matter--Dark matter is the unseen gravity force which fills the universe around galaxies, surrounding the Milky Way."

"Black hole! You know black holes are present when there is a gravity alteration like an entire galaxy clumped together."

"Dark matter--Dark matter is the stuff that surrounds the Milky Way and keeps everything tight."

"Black hole--Black holes are at the center of spiral galaxies and have infinite gravity due to their immense density."

"Dark matter--Dark matter surrounds galaxies, holding them together as they rotate with lots of mass."

"Antimatter/dark matter--is found all around the Milky Way and is unexplained but we know it's there."

Dark matter--Dark matter is invisible but still creates a gravitational pull."

20111003

Physics quiz archive: vectors, projectile motion, forces

Physics 205A Quiz 3, fall semester 2011
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, version 1

Sections 70854, 70855 results
Exam code: quiz03Fn37
 0- 6 : ****  [low = 3]
7-12 : ************
13-18 : *************** [mean = 18.4 +/- 7.6]
19-24 : ***********
25-30 : ************* [high = 30]

20110916

Physics quiz archive: kinematics, free fall

Physics 205A Quiz 2, fall semester 2011
Cuesta College, San Luis Obispo, CA
Sections 70854, 70855, version 1Sections 70854, 70855 results
Exam code: quiz02p4iN
 0- 6 : **  [low = 6]
7-12 : ****
13-18 : ************
19-24 : ***************** [mean = 21.8 +/- 6.5]
25-30 : ****************** [high = 30]

20090212

Physics clicker question: free fall acceleration

Physics 205A, Spring Semester 2009
Cuesta College, San Luis Obispo, CA

Cf. Giambattista/Richardson/Richardson, Physics, 2/e, Multiple-Choice Question 2.1

Students were asked the following clicker questions (Classroom Performance System, einstruction.com) in the middle of their learning cycle (after being asked about the acceleration while the ball is traveling downwards, and while traveling upwards):

A ball is thrown and released such that it initially travels upwards. While it is momentarily at its highest point, its acceleration is __________. (Up = +y direction; neglect air resistance ("free fall").)
(A) +9.80 m/s^2.
(B) 0 m/s^2.
(C) –9.80 m/s^2.
(D) (More than one of the above choices.)
(E) (None of the above choices.)
(F) (I'm lost, and don't know how to answer this.)

Sections 30880, 30881
(A) : 0 students
(B) : 30 students
(C) : 13 students
(D) : 0 students
(E) : 0 students
(F) : 0 students

Correct answer: (C)

A whole-class discussion on velocity versus time graphs for objects in free fall immediately followed the tallying of results. All v_y(t) graphs for free fall may have different initial v_i,y values, but would all have the same negative slopes, and thus acceleration values of -9.80 m/s^2.

20090203

Discover your weight on Earth, the Moon, and Mars

090201-1070957
http://www.flickr.com/photos/waiferx/3247179968/
Originally uploaded by Waifer X

090201-1070958
http://www.flickr.com/photos/waiferx/3247182114/
Originally uploaded by Waifer X

Discover your weight on Earth, the Moon, and Mars! Pay weight scale, Union 76 gas station, Skyline Boulevard/Avenal Cutoff Road exit at I-5, Avenal, CA.