Physics 4-17-19 Harmonics & Beats

PHYSICS: So why do instruments that are playing the same note sound so different? Here’s our discussion of harmonics and beats.

Speaking of discussion – what did you think about the Tacoma Narrows Bridge? Any ideas on an explanation? Here’s a link, if you’d like to see it again: Tacoma Narrows Bridge

Photo by Roberta Sorge on Unsplash

Physics 4-16-19 Sound Intensity and Resonance

PHYSICS: Great music today! And great discussion of intensity and resonance! Were you okay with the problems?

Couple of items to apply for further contemplation – so how does the whole hearing thing work? I mean, I know the little bones in your ear move, but why? Is resonance involved? Great item for application/discussion!

flickr photo by Morning Guitar

Physics 4-12-19 Wave Interactions

PHYSICS: Cool thing, standing waves! How’d you like making waves with slinkies? Are you okay with constructive and destructive interference?

Here’s the slinky activity for today. Stretch the slinky a pretty good length between you and your partner, but not enough to overstretch the slinky. Below that, the discussion of wave interactions.

Physics 3-22-16 Wave Interactions from Tammy Skinner on Vimeo.

flickr photo by EfrankE

Physics 4-11-19 Waves

PHYSICS: Hey guys! Here’s our discussion on the properties of waves. Remember anything from your earlier 8th grade physical science days? Problems are pretty simple for you, I think. Do you remember the main formula from chemistry? Speed = wavelength x frequency (c = λf).

Easy peasy – and don’t forget the applications!

Physics 4-8-19 Simple Harmonic Motion

PHYSICS: Springs and pendulums, back and forth… back and forth. Here’s the lecture from today on simple harmonic motion.

Wonder how it could be used to solve a design challenge? 🙂

UPDATE: Below the lesson vodcast is our short look at that spring problem 🙂

flickr photo by sudip

Physics 3-5-19 Bernoulli

PHYSICS: Were you amazed at the effect of change in surface area on the velocity of water, and especially the pressure of water, flowing through a tube? Thaaaaat explains how a calm ride on a lazy river can turn crazy in just a few seconds!

Today we concentrated on quantitative applications of Bernoulli’s Principle and a few practical applications. Tomorrow we’ll take a look at the problems and a couple more cool ways to apply Bernoulli!!

Physics 2-21-19 Pascal’s Law

PHYSICS: Did you realize that fluids could produce that much force? Make’s you wonder at the awesome way God designed those beautiful under water sea creatures to withstand so much pressure, doesn’t it? This little creature is a lionfish from the waters of Lembeh, Indonesia.

Oh, and here’s the lecture on Pascal’s law and hydraulics and the like.

Physics 2-27-17 Pascal's Law from Tammy Skinner on Vimeo.

flickr photo by CW Ye

Physics 2-26-19 Archimedes’ Principle

PHYSICS: So when you were floating in the pool this summer, did you enjoy your fellowship with buoyant forces? 🙂 From Tuesday – Archimedes’ Principle.

Great topic for investigation! Speaking of which – what did you find? When the kid jumped out of the boat, did the water level rise, fall, or stay the same? Hmmmm…..

flickr photo by marlana