PHYSICS 11-5-15 Vertical Forces Review & Forces with Pulleys and Friction

PHYSICS: Never a dull moment! How do you feel about the vertical forces problems? Here’s our review of the fish on the line one, with a brief interruption for the fire drill, and then the pulley problem.

Wow! Great job on solving the pulley problem! Did you notice that it was an application of horizontal forces, vertical forces, and friction all at once! Can’t wait to see how you do on the final review worksheet tonight!

Great job on the Newton’s Law Photography Project! I love watching you apply what you’ve learned to your everyday life. My favorite part of physics! 🙂

PHYSICS 11-5-15 Vertical Forces Review & Forces with Pulleys and Friction from Tammy Skinner on Vimeo.

flickr photo by Daniel Reid

Chemistry 11-5-15 Formula Mass & Molar Mass

CHEMISTRY: So how many water molecules do you think are in this drop? Now you have enough information to find out. Can you figure it?

Here’s the lecture from today on formula mass and 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 tomorrow, 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 11-5-15 Formula Mass & Molar Mass from Tammy Skinner on Vimeo.

flickr photo by ecstaticist