A lightning bolt strikes one end of a steel lightning rod, producing a current burst of 1.48×104 A that lasts for a time of 66.0 us. The rod has a length of 2.50 m and a diameter of 1.50 cm and its other end is connected to the ground by a copper wire of length 39.0 m and diameter 8.00mm .Resistivity of steel is 2*10^-7 ohms*mresisitvity of copper is 1.72*10^-8 ohms*mA) How do I find the potential difference between the top of the steel rod and the lower end of the copper wire during the current burst?B) Find the total energy deposited in the rod and wire by the current burst.
Wouldn't that be awesome!!! We just haven't reached that technology yet. I defiantly see that in our future. It's thinkers like you that make a difference!! Don't stop asking question!!
Like you said it's unpredictable. It's also unreliable as thunderstorms aren't occurring across the US all the time for enough random lightning to just so happen strike a tall needle to thus power generators which would take a lot of lightning at a decent rate. The idea is nice but it won't be there all the time.
Ok b calm What should a layman understand about different operating systems ? [after learning what an operating system basically is] Ans. An operating system works as an interface between the h/w and user. It controls all the h/w resources provided to the processor. The functions of os are process scheduling, memory management, i/o managementetc. How do Linux and Mac work ? Do they use windows for different applications or not ? Ans. The codes of linux and mac are different than windows they all r different oses. So linux and mac do not use windows. Its completely wrong What parallels do we have with Linux and Mac for MS Word, Powerpoint, Excel etc.. ? Ans. For linux openoffice is available. For mac there r similar applications. Why are Linux and Mac NOT as popular as Microsft despite Microsft known to be more vulnerable to viruses ? Ans. Windows is very very easy to use than linux and mac. So its very popular. One can easily handle windows than the others. But linux is very stable os and mac is the best for graphics design. Hope u got some intro. Good luck.
We can, and it wouldn't surprise me if in some places they do. Keep in mind a few things though: 1) Saving energy hasn't been a major concern that long, certainly not in the 1930's when the Empire State Building was built 2) Storing energy is not practical. That's why we actually shut down power plants during times of the day with limited power usage. We can create far more power each year than we do, but we can't feasibly store it long term. Its not as simple as building really big batteries. 3) There are very few places where such a device would actually be useful. The empire state building is really one of very few. 4) Building such a device and making it practical would not be easy. It would have to harness the electricity from lightning and quickly step it down to a manageable voltage and apply it right away, storing a good deal of it. It can't just be unleashed into the power grid, as you would blow power lines and black out large areas. Slowing down electricity is not easy. 5) Given all the difficulties and the odds against being able to use all the energy from the lightning, its probably more expensive to build an opperate such a device than its worth. The closest device I know of is Benjamin Franklin's lightning detector. After inventing the lightning rod, he hooked up a bell to it. When electricity flows through the rod as lightning is getting ready to strike, it causes a current to flow through an alarm bell, making it ring right before the lightning strikes. Something like that could be modified to have the current instead go through a series of transformers and capacitors to convert the energy into something useful, but it would be really difficult.
