Physics 1-7-16 Collision Problems & Bouncing

PHYSICS: Here’s a new way to study collisions! Somebody’s having way too much fun with veggies!

Great job with the problems today in class – are you ready to crank it up a bit? Here’s a hint – check for connections between the conservation of momentum and the conservation of energy. You can do it!

Physics 1-7-16 Collision Problems & Bouncing from Tammy Skinner on Vimeo.

flickr photo by Rhian Tebbutt Photography

Hon Chemistry 1-7-16 Photoelectric Effect

HON CHEMISTRY: Wow check out this awesome example of the photoelectric effect – a giant solar flower in Buenos Aires, Argentina! It moves as it follows the sun. Click on the link to learn more. There’s also a link below the vodcast. Giant Solar Flower

Hey what about other applications of the photoelectric effect? Are there tiny people living in boxes above the doors at Wal-mart and Target? What about solar calculators? And hey – what about those automatic flush toilets?!

Let me know if you need help with the problems? Don’t give up on the ones tonight! Here’s a hint, see if you can figure out a way to use the speed of light formula and the energy formula together. Bottom line, make sure you not only memorize formulas but be able to think through them to use them. Be careful to learn the symbols and units for each of the quantities you’re going to use, it’s easy to get them confused – and that will help tons!

HON CHEMISTRY 1-6-14 Photoelectric Effect from Tammy Skinner on Vimeo.

flickr photo by Stuck in Customs

Chemistry 1-7-16 Radioactive Decay & Half Life

CHEMISTRY: Now here’s a healthy breakfast! So what do you figure is the half-life of a twinkie? Nooooooooo…’s not the same thing! (Even it you do eat it with a Red Bull!)

So how did you like nuclear equations? Make sure you memorize the nuclear symbols for alpha particles, beta particles (electrons), positrons, neutrons, and protons!

Great start on half-life problems! These will be a little different – we thought them through in class, now I want you to take the concepts we talked about and work them. We’ll walk through them again tomorrow in class, I promise, but first, I want you to think through these problems yourselves! You’re a great problem solver!

Chemistry 1-7-16 Radioactive Decay & Half Life from Tammy Skinner on Vimeo.

flickr photo by irrezolut