Remember that resistive elements cannot store energy, they only dissipate it. That said, there is a formula for the energy dissipated by a resistor per unit time, and I'm sure you've used it many times before (hint: power = ?)
So your tools are KCL and KVL, right? More complex circuits...
Yea, I figured that one out. The question that I had when I started this whole thing out was "why?"
My idea is that differentiating the volume of anything, given that the volume formula is calculated by integrating over spherical coordinates the "radius" of the object (meaning finding an...
This should probably be moved to the general physics section, as its not really a homework problem. That said, the explanation is long and unwieldy, though I did find a few links for you
http://www.geocities.com/SiliconValley/Park/6461/
http://www.ripcord.ws/FATAnalysis.PDF <--- not sure...
A direction can be thought of in terms of a compass. Up is north, down is south, etc. The vector is pointing in that direction. However, what direction is the vector pointing in a counter-clockwise torque? (Yea yea, if you want to get picky you could point out that its based on the right hand...
Nay! Draw out your free body diagrams, that should help.
Also, I notice a lot of people making this mistake. Saying F = ma is rarely true. Always remember to add your sigma
\sum F = ma
So, I had a question for all of you, regarding the relationships between area and circumference, and surface area and volume.
For the longest time I was confused as to how these two quantities were related. I saw that the derivative of the area of a circle was equal to its volume, but then...
Just solve them yourself, they're both pretty standard trig substitutions. You should always solve the integral forms from the table yourself, at least once, before you use them. They're a nice tool for saving yourself time and effort, not a crutch to avoid learning your integration techniques...
See, the great thing about physics is, we don't need to actually travel to the dead sea to figure this out ;)
I haven't worked the calculations myself, but I believe James was giving the actual numbers for the dead sea.
I was wondering; what exactly is the difference between kinetic energy and momentum? I was just thinking about this the other day, and I couldn't quite work it out.
I'm not talking in definition-wise terms; I know that momentum=mv and kinetic energy=1/2 mv^2, and can see that the derivative...
I'm really not sure what you just wrote there, though I have a feeling you're missing something. If I'm correct, you have the form of the equation as
\sum \tau = (m r^2) \alpha
It also looks like you have your definition of torque mixed up. Torque is defined as such: \tau = R cross s. (what...