I can't believe my phone snapped in half

Hello everyone. How was the weekend? Saturday was pretty nuts with the tsunami and all. Even though it was pretty anticlimactic, it was good that nothing came so no one got hurt. I gotta admit though that it was pretty much a waste of time staring at the tv at home waiting for something to happen. What made me laugh was watching the guy that went out surfing when the tsunami was supposed to hit. He's my hero. Other than that, I went to watch the musical on saturday night, and it was pretty good. And also, my phone broke in half because my brother sat on it. This is an example of a force of mg and some torque exerted on the phone to make it break.



Anyway, on saturday, I actually made some time to practice my violin and playing it reminded me of many physics concepts. First of all, it reminded me of friction because without the use of rosin to make the bow stick to the strings, the quality of sound would be horrible. The rosin allows the bowhairs to create friction and extract a rich sound from thing strings. In addition, this reminded me of the idea that if you half the length of the string, it creates a note an octave higher since it doubles the frequency. Last but not least, when I was tuning, I try to hear for any beats, which show that the two strings that I am playing aren't perfect fifths.


oh and I saw this picture somewhere on the internet. Thats some pretty mean photoshopping.

Circuits in da house

Out of the past 17 hours, I was sleeping for 13 hours. Speaking of sleeping, I just woke up from a three hour nap and I know that I'm going to forget to do a blog so I figured that I'll do one now. I don't really know what to write about, but we just did some electricity circuit stuff, so I wanted to talk about the circuits around my house. When I flick a switch, it closes the circuit and allows current, which is the flow of charge, through the wires to turn the light on. Almost every light in my house is in a parallel circuit, so that it is unaffected by other switches. Therefore, when I turn one light off, the rest of the lights still remain on. Likewise, I can turn on one light at a time. I found a meter outside my house that measures the amount of electricity that we use and I found that it was measured in kilowatt-hours, just like what we said in class. Also, I noticed that our christmas lights are all in parallel because although a couple are broken, the rest of the lights still work since each bulb is on a different path. Alright writing this blog made me kinda tired. I think I might go take another nap before dinner.

Super Bowl Sunday

I KNEW THE SAINTS WOULD WIN! Ahhh I knew I shouldve bet some people for lunch because everyone thought that the colts would win. Anyway, I never wrote a blog about physics concepts in football yet so i will now. First, there's the obvious concept of projectile motion. The quarterback releases the ball with some initial velocity and it travels to the receiver as the football is under the effect of gravity. Another concept is momentum. When a linebacker comes and sacks a quarterback, momentum is conserved before and after the collision. However, this is an inelastic collision since the linebacker and the quarterback together with the same velocity. Finally, if there was some wind in the stadium, there could have been hints of air resistance, a non-conservative force going against the direction that the football is traveling. All right, hope everyones had a good weekend.