PHYSICS: Did you have a good day today reviewing work, energy, machines, etc.? I wish I could have been there to watch you! Here are the answers to the Review Worksheet 2. Most were worked with g as 9.80 m/s2. Also, I think #19 must be at constant velocity.
3) 1090 J
4) 1350 J
5) 79%
6) 917 W
8) 9.57 kW
12) 420 N
14) 1300 J
18a) -125 N
18b) -2190 N
18c) 0.360
19) 4390 J (assume cart is moving at constant velocity)
HON CHEMISTRY: Radioactive isotopes all around! Did you ever dream there were so many applications of radioactivity? This is a pic of a test used to check on blood flow through the heart during a stress test. Fun, huh!?
So what’s this about you probably having an radioactive isotope in your house?!? Don’t forget to research how smoke detectors, especially those with Americium, work!
Hon Chemistry 11-23-15 Applications of Radioactivity from Tammy Skinner on Vimeo.