Daily Archives: November 12, 2014

PHYSICS 11-12-14 Forces with Pulleys and Friction

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PHYSICS – Here’s a different take on forces – an application of horizontal forces, vertical forces, friction, all at once! Wow! Great job on solving the problem! Now go see if you can use what you learned to solve the second one. Check the vodcast for the problem that I want you to add to your homework.

Underneath the vodcast from today’s class is the vodcast from the help session this morning. We did quite a few problems – the fish on the line, #47 from the HW, etc. Physics, physics, physics!!
🙂

PHYSICS 11-12-14 Forces with Pulleys and Friction from Tammy Skinner on Vimeo.

flickr photo by Daniel Reid

PHYSICS 11-12-14 Help Session – Forces, Rriction – Problems Review from Tammy Skinner on Vimeo.

Chemistry 11-12-14 Molar Mass, Moles & Avogadro’s Number

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CHEMISTRY: So how many water molecules do you think are in this drop? And now you know how to find out!!

Here’s the lecture from today on molar mass, and then using molar mass and Avogadro’s number as a conversion factor. You did a great job on thinking through the problems! Now go forth and practice them so you don’t forget!

Homework clarification: On the homework that is due Friday, if the questions involve math, you can just do b and c. And don’t forget the thLAB!! Be sure and read it now so you can get supplies!

CHEMISTRY 11-12-14 Molar Mass, Moles & Avogadro’s Number from Tammy Skinner on Vimeo.

flickr photo by ecstaticist