FizziksGuy

Close, but as the angle in radians approaches zero, cosine of the angle won't approach zero... it should approach 1.

Name: Brainiac - Electric Fence Category: Electricity & Magnetism Date Added: 2017-12-18 Submitter: FizziksGuy Electric Fence Experiment Richard Hammond shows the Brainiacs how fun Electricity can be. Also, yes, if you are in the air when the electricity goes through, you don't get a shock. You don't get shocked if the circuit (box to fence to person to ground to box) doesn't complete. On top of that, the end where he ALMOST shakes Hammond's hand, he doesn't. Also, the slight gap in time between feet hitting ground and the shock can be attributed to the 1-2 second delay caused by the fence not being constantly on. Brainiac - Electric Fence

Name: Walter Lewin Demonstrates Moment of Inertia Category: Rotation Date Added: 2017-12-05 Submitter: FizziksGuy The concept of moment of inertia is demonstrated by rolling a series of cylinders down an inclined plane. Visit physicsworld.com for more videos, webinars and podcasts. http://physicsworld.com/cws/channel/m... Walter Lewin Demonstrates Moment of Inertia

View File SimuLAB: Motion in a Circle Interactive simulation lab activity where students explore quantities describing circular motion. Submitter FizziksGuy Submitted 11/30/2017 Category UCM & Gravity  

View File SimuLAB: Universal Gravitation APlusPhysics Simulation Interactive simulation to explore the basic relationships in Newton's Law of Universal Gravitation using Geogebra. Submitter FizziksGuy Submitted 11/29/2017 Category UCM & Gravity  

View File SimuLAB: Coulomb's Law APlusPhysics Simulation Lab handout to accompany the APlusPhysics Coulomb's Law mini-lab simulation activity. Submitter FizziksGuy Submitted 11/29/2017 Category Electricity  

Draw separate free body diagrams for each of the objects, showing the direction of the forces on each object. For example, for the (2m) mass, you would have a dot with an arrow to the left (T3), and an arrow to the right (T2). The up and down arrows (forces Fn up and mg down) are balanced, so we'll focus on the x-direction. Writing Newton's 2nd Law in the x-direction, since T2 is in the positive direction, we'll leave it as positive, and since T3 is in the -x direction, it will be negative. Therefore T2-T3 = (2m)a.

And THIS is why I avoid New York City...

Fantastic blog post, and a great start on understanding some of the conceptual ideas around time dilation!

Full contact billiards... cool!

That's a mighty cool looking stick!

Never thought of applying conservation of energy to minions... Unique!!!

Nice summary of our last unit!

Wow, learned all sorts of pokethings I didn't know before!

Have you ever tried to make it? How did it come out?

Wow, that's some mighty creative problem writing!!!

That is a paw-some blog post about cats. The physics behind them always landing on their feet (or usually) is meownificent. Great job jumping on this blog post and avoiding procatstination. No kitten, this is pawsitively fantastic.

Used to go to Rock Ventures all the time (nearly 20 years ago) -- it's been around for a while now. Cool stuff -- love all the tensions and physics in the knots!

Looks like several paragraphs all on the same topic -- could perhaps be combined into a single post...

Dropped my daughter once... didn't notice the air resistance kicking in. Did notice the mom resistance kicking in shortly thereafter, however.

If you have a chance, read up a bit on Chuck Yeager (and/or follow his Twitter). An amazing man with an amazing career and a fantastic sense of humor to boot.

Love this! My background is in microelectronic engineering, and I'm even in the middle of putting together a 2-hour workshop on microelectronics (presentation is in December) that will cover much of what you did over the summer. Great discipline, with TONS of fantastic jobs that are fun, challenging, and rewarding. We'll have to talk more...