We were doing an experiment where you put a tennis ball on top of a basket ball, and release to the floor. The tennis ball goes flying high and the basketball hardly bounces at all. We also measured the initial bounce of each independently.
We're talking about impact and momentum, energy...
Ok so it happened again... my students asked a question I hand't thought of before (love it when that happens!) Can you help me?
What happens to the sound wave after it hits the eardrum? Does it get absorbed, or does it continue to go through your head?
I found lots of info about how the...
I took apart my green laser, and found a red laser diode inside! Even stranger, I found a little cylinder that fit over the laser that normally would have thought to be a filter, but when I put it on the red laser, green laser light came out! I was totally stumped as to how this worked, but then...
Is the Sierpinski triangle composed of equilateral or isosceles triangles? I've seen references for both but I have a student asking which one it is... any help is here greatly appreciated.
Isosceles example...
I am not sure if this is the right place to post this, so please let me know...?
If electrons pop in and out of existence, how does that relate to the law of the conservation of matter? The electrons can't just disappear. Are the electrons just visiting the other element in the molecule? Like...
How are the normal, static friction, kinetic friction, gravity, electrical and magnetic forces related to the four fundamental forces of nature? I have a 13 year old asking and I am not sure what to say! Any help is kindly appreciated.