http://sites.science.oregonstate.edu/portfolioswiki/ 2020-01-27T00:44:27-08:00 http://sites.science.oregonstate.edu/portfolioswiki/ http://sites.science.oregonstate.edu/portfolioswiki/lib/images/favicon.ico text/html 2013-07-29T11:21:56-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:cfswairhockey?rev=1375122116 The Prompt Draw the separation vector for the two masses connected by a rubber band moving on an air hockey table. Context This SWBQ Wrap Up [Powerpoint slide] [PDF slide] text/html 2013-07-29T11:23:33-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:cfswangularmom?rev=1375122213 The Prompt Write down something you know about angular momentum. Context This SWBQ Wrap Up [Powerpoint slide] [PDF slide] text/html 2017-05-11T12:40:52-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:cfswnewton?rev=1494531652 Prompt “Write down Newton's second law.” Context This SWBQ follows up on the Survivor in Space activity and is used as a segue into generalizing Newtons's second law to systems of many particles. Wrap Up Collect several student responses. Many students will respond with an introductory form $$F = m a$$ but be sure to collect boards that remind students that Newton's second law is an equality between vector quantities. If no students bring up the second-derivative nature of the acce… text/html 2013-07-29T11:34:00-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:cfsworbit?rev=1375122840 The Prompt Given that the trajectory takes an elliptical orbit, draw how the two orbiting masses look as the separation vector changes with time. Context This SWBQ Wrap Up [Powerpoint slide] [PDF slide] text/html 2013-07-29T11:35:27-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:cfswplotfunc?rev=1375122927 The Prompt Sketch a plot of $f(r)=\frac{1}{r^{2}}-\frac{1}{r}$ Context This SWBQ Wrap Up [Powerpoint slide] [PDF slide] text/html 2013-07-29T11:36:48-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:cfswpotential?rev=1375123008 The Prompt Make a sketch of the potential of the two air hockey masses connected by a rubber band. Move on to sketch the potential of the two masses again but if gravity were the central force instead of the rubber band. Context This SWBQ text/html 2012-08-23T22:24:06-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:index?rev=1345785846 text/html 2017-04-28T10:07:51-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:mbpphermitianprojection?rev=1493399271 Prompt “The Question” Context This SWBQ ... Wrap Up [Powerpoint slide] [PDF slide] text/html 2012-08-27T10:43:13-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:osswpend?rev=1346089393 Prompt “Write the equations of motion describing a pendulum oscillating at small angles.” Context This SWBQ ... Wrap Up [Powerpoint slide] [PDF slide] text/html 2012-08-27T10:47:14-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:osswphasor?rev=1346089634 Prompt “If you know the phase of the charge on a phasor diagram, what is the phase of the current?” Context This SWBQ ... Wrap Up [Powerpoint slide] [PDF slide] text/html 2012-08-27T10:40:03-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:osswresfreq?rev=1346089203 Prompt “What is the resonance frequency of a series LC circuit?” Context This SWBQ Wrap Up [Powerpoint slide] [PDF slide] text/html 2013-08-12T09:15:51-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:osswsinvolt?rev=1376324151 Prompts “Suppose you have a sinusoidal driving voltage, that oscillates at the resonance frequency of the circuit, as a function of time (as you see on your oscilloscope). Plot the Fourier component of the amplitude of the driving voltage with respect to the frequency.” text/html 2012-08-27T14:40:46-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:osswvel?rev=1346103646 Prompt “Write an expression for velocity if the following equation represents position. $$x(t)=A\cos(\omega_{0}t+\phi)$$ Context This SWBQ ... Wrap Up [Powerpoint slide] [PDF slide] text/html 2017-05-04T12:44:58-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:ppmbtheta?rev=1493927098 Prompt “The Question” Context This SWBQ ... Wrap Up [Powerpoint slide] [PDF slide] text/html 2012-08-29T16:41:47-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:ppswidentify?rev=1346283707 Prompt “Name a periodic system in any context that you can think of.” Context This open end SWBQ can be use to gauge how familiar the class is with periodic systems and help clarify any inconsistencies in student answers that are not considered a periodic system. text/html 2012-08-29T16:50:00-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:ppswsingleosc?rev=1346284200 Prompt “What is the differential equation that tells this atom what to do?” Context This SWBQ presented the students with a single particle that is free to move between and connected to two fixed points on opposite sides by springs with spring constant $\kappa$. The system is one dimensional. text/html 2012-08-24T11:44:30-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:rfacc?rev=1345833870 Prompt “Determine the direction of the Coriolis acceleration, $-2\Vec\Omega\times\Vec v_R$.” “Determine the direction of the centrifugal acceleration, $-\Vec\Omega\times(\Vec\Omega\times\Vec r)$.” Context Estimated Time: 10 minutes, including wrap-up text/html 2012-08-24T11:28:46-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:rfeast?rev=1345832926 Prompt “Suppose you face East and travel in a straight line. Where do you wind up?” Context Estimated Time: 10 minutes, including wrap-up This SWBQ provides a graphical demonstration that lines of latitude are not straight, since they are not great circles. text/html 2012-08-24T11:17:49-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:rfinertial?rev=1345832269 Prompts “What is an inertial frame?” “Are we in one?” Context Estimated Time: 10 min, including wrap-up This SWBQ requires familiarity with Newton's Second Law. Students should first be asked to write down some properties of inertial frames. After having a few minutes to respond, but without further discussion, students should be asked whether the classroom is an inertial frame. text/html 2012-08-24T11:17:58-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:rflinacc?rev=1345832278 Prompts “What is the trajectory of a ball thrown straight up on the station platform, as seen by a train going through the station?” “What if the train is accelerating?” Context Estimated Time: 15 minutes, including wrap-up This SWBQ requires basic familiarity with Newtonian mechanics for constant acceleration. Students are asked to draw the trajectory of a ball thrown straight up on the station platform as seen from a train accelerating through the station, for several … text/html 2015-08-15T13:33:23-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:rfswacc?rev=1439670803 Prompt “Determine the direction of the Coriolis acceleration, $-2\Vec\Omega\times\Vec v_R$.” “Determine the direction of the centrifugal acceleration, $-\Vec\Omega\times(\Vec\Omega\times\Vec r)$.” Context Estimated Time: 10 minutes, including wrap-up text/html 2016-05-02T15:16:08-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:rfsweast?rev=1462227368 Prompt “Suppose you face East and travel in a straight line. Where do you wind up?” Context Estimated Time: 10 minutes, including wrap-up This SWBQ provides a graphical demonstration that lines of latitude are not straight, since they are not great circles. text/html 2015-08-12T13:32:07-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:rfswinertial?rev=1439411527 Prompts “What is an inertial frame?” “Are we in one?” Context Estimated Time: 10 min, including wrap-up This SWBQ requires familiarity with Newton's Second Law. Students should first be asked to write down some properties of inertial frames. After having a few minutes to respond, but without further discussion, students should be asked whether the classroom is an inertial frame. text/html 2015-08-15T13:33:40-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:rfswlinacc?rev=1439670820 Prompts “What is the trajectory of a ball thrown straight up on the station platform, as seen by a train going through the station?” “What if the train is accelerating?” Context Estimated Time: 15 minutes, including wrap-up This SWBQ requires basic familiarity with Newtonian mechanics for constant acceleration. Students are asked to draw the trajectory of a ball thrown straight up on the station platform as seen from a train accelerating through the station, for several … text/html 2018-09-24T16:08:24-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:splreview?rev=1537830504 --- Elizabeth Gire 2018/09/19 09:09 Prompt “Write down something you know about angular momentum.” Context This SWBQ is meant to jog students' memories about what they know about angular momentum from introductory physics as preparation for understanding precession and Stern-Gerlach experiments. text/html 2018-09-24T16:10:52-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:spspinningtop?rev=1537830652 Prompt (prompts on slides) Context This SWBQ is practice applying physics concepts to a spinning object - leads to discussion of precession. Wrap Up The punchlines is that the angular momentum will not change magnitude but will change direction because the torque is perpendicular to the momentum, just like in uniform circular motion, where the the force (acceleration) is perpendicular to the linear momentum (velocity). text/html 2012-08-22T22:14:56-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:title?rev=1345698896 Classical Mechanics SWBQs text/html 2013-07-26T11:42:09-08:00 http://sites.science.oregonstate.edu/portfolioswiki/swbq:cmsw:wvswkendensity?rev=1374864129 Prompt “What would be an expression for the kinetic energy density of an oscillatory system i.e. wave on a rope?” Context This SWBQ is used to open up a discussion about energy density of an oscillatory system. Wrap Up Students can easily come up with the equation for the kinetic energy density after given the explanation that Energy Density $= \frac{energy}{length}$. Student were having trouble to come up with the equation for the potential energy density. [Powerpoint slide] …