Iona Prep Physics

[ionaphysics-blog]

Bridge design and building

[ionaphysics-blog]

Period a bridge building 2013

[ionaphysics-blog]

Work continues on the paper roller coasters

[ionaphysics-blog]

Video Problem Solution

[13mahom-blog]

[ionaphysics-blog]

It's very true. Nice to see the big picture.

[mlarrier]

hello world

[ionaphysics-blog]

Hello mervyn

[heffphysics-blog]

Today we review Kinetic Energy and did some pratice problems involving it. We were also introduced to Potential Energy. I learn that potential energy is the energy of position and it involves the relative position of 2 objects. I learned PEg is the work that is required to elevate the object...

[ionaphysics-blog]

Good

[lukeypotatoes]

Here is a simple picture of the one they call “THE HAWK” hunting with his bow and arrow. This bow has a lot of potential energy stored with it. There is also Gravitational Potential energy which is the work that was required to elevate the object against gravity. The formula of that is PEg=mgh. Potential energy and kinetic energy both play important roles with each other.

[ionaphysics-blog]

But can he hit the target

[michaelsantini-blog]

Today in physics we learned about the work-energy theorem. The work-energy theorem is the combination of the KE and PE equations. Today we also learned about Potential Energy. Potential Energy is teh energy of position.Potential energy must refer to the relative position of two objects. Today...

[ionaphysics-blog]

Nice graphic!

[enzophysics-blog]

Absolute Pressure

Absolute pressure is the additition of atmospheric pressure and the gauge pressure. I was kind of confused with today’s daily problem. At the surface of the pool, would the absolute pressure simply be equal to 1 ATM (1.0x10^5 PA) because no gauge pressure is present at the moment?

[ionaphysics-blog]

Yes!

[bathanasidy-blog]

This past lab experiment was fun to perform but when looking back at our execution, I can’t help but notice something. When calculating k using the applied force in k=f/x, the resulting values of k seemed to be fairly consistent. When solving for this same k but using the relationship of…

[enzophysics-blog]

yea same thing happend to me, but after reading this post it makes sense (:

[ionaphysics-blog]

Interesting observation. REAL experiments are rarely perfect. Especially when you have a lot going on

[howdoasianphysics-blog]

So I submitted my lab Yesterday at 10 p.m.

But I did not realize that it is first saved as a draft.

I revisited the site a bit after 12 p.m. only to realize my work was not submitted.

I then proceeded to click the “Submit” button frantically hoping that time will some how bend.

So… Am I late now? I sure hope not….

[ionaphysics-blog]

No, you're fine

[hawktrizano-blog]

WOOHOO PHYSICS

Work is when someone moves an object away from its original position. However, if an object doesn’t move, there is no work being done. Since there is no work being done, there is also no power. The power is calculated by dividing the work by how long the work was done. The formulas are Work=Force*Distance and Power=Work/Time. 

[ionaphysics-blog]

Good

[krb902-blog]

[ionaphysics-blog]

Khan academy is changing education!

[mike7g7-blog]

Potential energy is stored energy in an object. Objects that have potential energy have the potential to do work. Potential energy can change into kinetic energy if the object is set in motion by a force like gravity. Potential energy is measured in joules and can be found by the equation PE=mgh

[ionaphysics-blog]

Good

[srizz29-blog]

A bow is a perfect example of the conversion of potential energy to powerful kinetic energy. When an individual pulls the bow string back, potential energy is built up; if you let go of the string the energy is converted to kinetic energy sending the arrow at a high velocity. The more weight it takes to pull the bow back, the more power that is built up. For example, my bow is set to a 60 pound pull back and my cousins is at 70 pounds. Because of our draw weight difference, the velocity of the arrows differ as well- his obviously has a faster velocity than mine. However, when hunting not that much power is completely necessary. A bow with a 45 pound pull back can still get the job done- showing the actual power that can be produced. 

[vmaccc-blog]

Nice example. It would be interesting to calculate the difference in initial velocities among different draw weights.  I would assume a proportional relationship to exist between draw weight and arrow speed, assuming no real difference in arrows used is present.  Btw, up that 60 pounds and stop being a woman! #sensitivesteve

[ionaphysics-blog]

Nice post. Good discussion of potential and kinetic energy

[taylorgangorphysics-blog]

I know this is a bit of a throwback to uniform circular motion, but this posed a question to me (not involving James Bond): does UCM involve work? I became curious when I thought that there was force, and distance in a rotating system; however, I also began to think that perhaps there was a difference because the distance could be canceled out because the object in question returned to its original position.

[bombsinphysics-blog]

Haha 

[ionaphysics-blog]

That's a great question. What do you know about the direction of motion and the direction of force for a rotating object?