swansont

There were lots of blown opportunities by the Cards. All those penalties, a dropped pick, the inability of their team to tackle Harrison before he was done running 100 yards.

You presume too much. If an object is moving in a circle, there must be a net force toward the center, equal to mv^2/r, thus the normal force can't cancel/balance mg

Quantum means "discrete," as in "not a continuum. There's nothing inherently discrete in either of those equations — any value of Q or M will do.

You have given no references that support this. They have all been for parallel wires, which is not the same thing. Q=0 for wires. I've seen it worked out but can't find the link at the moment. But E^2-B^2 is a Lorentz invariant.

It's by definition and convention. Attractive forces result in negative potential energies when you consider the energy at arbitrarily large distances to be zero. F = -grad(U)

Sione has been autosuspended for has rapid collection of infractions, including trolling, thread hijacking and ad hominem attacks.

A mirror?

Parallel wires and parallel beams are different, which is why I asked the question. There is no electrostatic force in the wires in their rest frame, which is not true of a beam. IIRC, you have to account for the length contraction of the beams, which increases their charge density and the electrostatic repulsion, and cancels the increased magnetic attraction. This effect is also present when you look at the wires. There is no preferred frame.

The work done by the engine is whatever KE you have at the bottom in excess of mgh, which will also be the force exerted by the motorcycle multiplied by the distance.

The T and V you give are not independent — if you know one, you can find the other. They tell you the energy of the ball as it is tossed (assuming you know the mass, as Mokele has pointed out), but without knowing how long it took, you can't calculate the power.

So what exactly is the problem?

Show mathematically that this is true. I have Q1 at one point and Q2 at another. What is the field mid-way between them?

Yes. There is no work being done on the ball after it leaves your hand, which is why the sum of KE + PE, which is the work you originally did, remains constant.

I don't see the relativistic correction.

We assume the world to obey Newton's laws of motion, i.e. we assume we are in an inertial frame. When we aren't, we assume a force that isn't really there, in order to account for the motion.

If B-B was deemed to be not physically meaningful by the test writer, then it would be 1 & 2.

I think that the mainstream view is more like this: Q1. Is there an effect? A. Maybe. There's excess heat claimed, but it's not always clear if the experiment was rigorous enough. Q2. Is the effect replicable? A. Sort of. Sometimes it's replicated and sometimes not. Conclusion: Can't draw one until they get their act together. Q3. Are there by products? A. Maybe. The levels are around background, so it may just be sloppy experiments. Q4. Are the by products those of a chemical or nuclear nature? A. Could be either. Conclusion: Can't draw one until they get their act together. Now the biggy. Q5. Does current theory allow for the observed effect? A. Depends on of there is really an observed effect. Q6. Does current theory tell us where to look for the discrepancies? A. Yes. Conclusion: Can't draw one until they get their act together.

Then you're talking about a much, much bigger bailout. You can't repay both the good loans and bad loans with the current bailout. But you still have the problem of having deposits with an obligation to pay interest (liabilities) with no income. And then there's the question of how much inflation you just created by effectively increasing the money supply by a huge amount.

you can't imagine no objects at all in space where then in the absence of any objects in space does the measurement of time come from ? Once you start "imagining" things that are unphysical, you can reach just about any conclusion you wish. As Klaynos said, this is philosophy.

Electrons, or electrons in wires? Two electrons, by themselves, will repel each other.

There are effects — something is happening. It just isn't consistent with fusion. The first graph shows 10^11 Helium atoms per Joule of energy released, which is 6.25 MeV per reaction, and with the caveat that not all of the He is detected, so that's even less energy per reaction. But D-D fusion forming He-4 releases 24 MeV per reaction. So there's a factor of 4 (or more) discrepancy in the energy. This means that some of the reactions would be giving off He-3, but then, where are the neutrons? It's things like this that keep cold fusion from being accepted. That goes both ways. Eventually you have to modify your theory that this is fusion, if it does not agree with actual observations of fusion. Masses and binding energies are very well known.

You've done work in getting the ball to leave your hand at speed v (1/2 mv^2), and also raising its potential energy by mgh where h is the distance between where you start to throw the ball and its release point. The average power is going to be that amount of work divided by the time it took you to throw the ball.

Because it's not going to keep the banks from failing. You leave the bank with only the bad debt, but they still have obligations to pay interest to their depositors. So they fail anyway, and the FDIC is still on the hook for guaranteeing the deposits.

Bah, 4.5 is nothing. I remember at least a couple of ~5.5 quakes when I lived in the Pacific NW. I know a guy who documented the 2001 quake (6.8); he has atomic clocks and GPS receivers, so he could get a fix on how his location shifted — about 8 mm. http://leapsecond.com/pages/quake/

Businesses? I don't know. But (in the US at least) military pay can be inferred from rate or rank, and civilian government salary is almost as transparent. Merged post follows: Consecutive posts merged For many jobs it's not all that hard to document productivity or similar metrics that would provide justification for unequal pay. Some businesses do this kind of thing already — performance reviews for salary and bonuses.