A current of 1400 A exists in a rectangular copper bus bar of dimensions 0.6 cm by 9 cm. The current is due to free electrons moving through the bus bar at an average velocity of v m/s. The concentration of free electrons is 10^29 electrons/m^3 and they are uniformly dispersed throughout the bus bar. What is the average velocity of an electron?
Oh the arrogance. Alright, let me disprove all of your supposed proof that the Bible's been proven wrong. Oh wait, you didn't give any. 2 Things: 1) If it were really so obvious that the Bible's wrong, you wouldn't have men with top level educations (doctorate degrees from schools such as Harvard for example) still taking the Bible as the Word of God and calling themselves Christians 2) I've studied the Bible academically and personally for many many years. I am quite certain I know it, and the accusations against it, better than you, and I have yet to run into a single one I couldn't prove wrong. Conclusion: there's a reason millions of people around the world believe it today, and a reason it outlasted the Roman empire by over a thousand years.
people are saying some odd thing here. Archeology has never proven the bible wrong? Check out the Tyre Prophecy - it was prophecied that the city would be destroyed and never be rebuilt ever again. But today there is a city called Tyre in the exact same spot. Someone said Virgin births are acceptable according to science. Are you kidding me!? Someone else said that because academics at Harvard study the bible, it must be true Again, horrible logic - people study Hinduism, Buddhism, Islam, Jainism, all the world's religions at top institutions - does that mean they are all right!? Hell, people study fiction literature at plenty of academic institutions, that doesn't mean they believe it's all true. About the only response that made sense had to do with points of views. If you take science to be true, then you can evaluate the bible and find it wanting. But you can also do the same thing the opposite way. You can take the bible to be true, and find science wanting. It depends on how you approach it.
electric powered modern-day is such as water modern-day and AC modern-day is like water (or electrons) swishing decrease from side to side in a pipe (or twine), in keeping with risk 60 cycles in keeping with 2nd. The electrons in a metallic twine (a reliable conductor) variety a cloud it is truly pushed decrease from side to side by using AC voltage (which has similarities to alternating water rigidity). the cost of electrons in an AC circuit will rely on the voltage around the circuit and the resistance of the twine or factors (resistors?) interior the circuit. besides the fact that the electrons would migrate decrease from side to side quite slowly (finding on twine diameter and length of the electron cloud), the end result's almost on the cost of light (push ten electrons in one end of the circuit and ten electrons are right this moment pushed out the different end. needless to say any factors alongside with capacitors (that shop charge) or reactors (coils of twine that create magnetic fields) can preclude electrons from attaining the different end. case in point, a circuit with a capacitor and reactor in parallel can function a 'tank' circuit that oscillates at a tuned frequency. The electrons flow decrease from side to side between the climate and the AC voltage utilized to the tank circuit is almost a confirm pushing on a swing to maintain it going. it truly is the way many radios are tuned.
According to your interpretation science has proven the Bible wrong. What about the rest of us who believe in the Bible because we have seen the many prophetic truths contained in the Bible? Just because you say it isn't so, does not change me. You got that? So don't bother with your redundant mind crap. Get some new material, brain wave. Blah
1 A 1 coulomb/second, so if you calculate how many electrons (on average) exist in the bar at any one time. Just multiply the volume of the bar by the electron concentration. You know that 1400 C of charge need to flow past any cross sectional area of the bar in one second. Calculate the total charge in the bar (Q) by multiplying the number of electrons in the bar by the charge on a single electron. Q/t 1400 A. Now solve for t. vx/t. x length of the bar. By substitution, v 1400x/Q. I can't provide you with a numerical answer, because you omitted one of the dimensions of the bar. Hope this helps!
