Int2 forces HW solutions January 9, 2010
Posted by mrmackenzie in : Intermediate 2, homework solutions, screencast , add a commentHere are the answers to the last HW before Christmas. Click on the <more> link after the first video player to see the full list. These videos are also available in iTunes by clicking on the Int2 podcast link in the sidebar.
Int2 forces HW Q1 from mr mackenzie on Vimeo. (more…)
S4 videos of homework answers December 4, 2009
Posted by mrmackenzie in : Standard Grade, Transport, homework solutions, screencast , add a commentHere are the video answers to your HW questions on speed, distance. time and acceleration if you are not using iTunes to download the individual files. Click on the (more) link under the first player to see the full list of answers.
Q1 speed/distance/time from mr mackenzie on Vimeo.
drawing scale diagrams June 22, 2009
Posted by mrmackenzie in : Higher, Intermediate 2, podcast, screencast , add a commentHere is an example of a vector problem where we use a scale diagram to find the displacement of an object.
You can watch the video using the player, click on the download button to save it to your computer or watch it in iTunes if you have subscribed to the podcast.
Vector Scale Diagrams from mr mackenzie on Vimeo.
If you want to improve the accuracy of your scale diagrams;
- use a sharp pencil
- measure the vector lengths as accurately as you can
- make sure the point of your vector arrow is on the end of the measured line
- start each new vector right at the tip of the previous vector
Higher physics – internal resistance problem May 25, 2009
Posted by mrmackenzie in : Higher, screencast , add a commentHands up for Mr Mallon!
He’s shared another last minute example, this time it’s an internal resistance problem for Higher Physics.
solution to HW Q4&5 due 24/04/09 April 26, 2009
Posted by mrmackenzie in : Higher, homework solutions, podcast, screencast , add a commentVideo solution to 4(a) attached.
4(b) The critical angle is the angle of incidence that gives an angle of refraction of 90 degrees. Beyond this angle of incidence, no refraction takes place and all light undergoes total internal reflection.
5(a). Refractive index is dependent on wavelength. Each of the colours that make up the white light has a different wavelength, so each colour has a different refractive index. This means each colour is refracted by a different amount.
5(b). Violet, Indigo, Blue, Green, Yellow, Orange, Red.
solution to HW Q3b due 24/04/09 April 26, 2009
Posted by mrmackenzie in : Higher, homework solutions, podcast, screencast , add a commentsolution to HW Q3a due 24/04/09 April 26, 2009
Posted by mrmackenzie in : Higher, homework solutions, podcast, screencast , add a commentsolution to HW Q2c due 24/04/09 April 26, 2009
Posted by mrmackenzie in : Higher, homework solutions, podcast, screencast , add a commentThis video about twice as long as usual. You might want to pause/rewind it at different stages due to the length of the calculation.
solution to HW Q2a&b due 24/04/09 April 26, 2009
Posted by mrmackenzie in : Higher, homework solutions, podcast, screencast , add a comment2(a) You would see a series of interference fringes (spots) on the screen.
Answer to 2(b) attached as video.
