The Week of 4/11-4/15 and Answers to Review Sheet

I have just completed entering quarter grades into EdBox.  This will be the grade you receive unless you see a problem and contact me.   This week we have a 12+13 Test on Tuesday and the Musical Instrument due on Thursday.

• Monday 4/11:  Go over 12+13 Review and the concepts that will be on the test.  Hand out 4th Quarter "Deal" and explain. 
• Tuesday 4/12:  Turn in 12+13 Review.  Take 12+13 Test.  Questions on Musical Instrument?
• Thursday 4/14:   Show off Musical Instruments.  Play a song or a piece of music for extra credit.  Turn in instrument write-up (see documents section if you forgot what you need).  Introduce Electromagnetic Waves and the Electromagnetic Spectrum.  Is Light a Wave or a Particle?  Read 14.1.  Start Mirror Lab?
• Friday 4/15:  Reflection.  Mirror Lab.  Read 14.2.

Answers to 12+13 Review: 
1.  -500 N/m       2.  4.0 Hz       3.  4.07 s          4.  17.5 m/s2    5.  105 complete osc.
6.  0.0055 m        7.  4 nodes      8.  1/9             9.  0.25 W         10.  180Hz,540Hz,900Hz
11.  100 dB         12.  0.20 s       13.  70.1 Hz      14.  3000 Hz (2 sig figs)    15.  4 Hz