How destructive would a full ban on civilian gun ownership be in the U.S.?
Take a look at the carnage wrought by the War on Drugs. Double or triple that. If a complete gun ban was put in place by some magical happenstance (and you really would need magic for this to happen in any sort of foreseeable future), the first problem would be the cost and the logistics of dealing with the people who actually go along with it. In order to take property from someone, you have to compensate them for it. Average gun is $400-500, with the fancy guns going into tens of thousands. We will ignore the ones in hundreds of thousands, because there aren't that many, and I'm sure people that own those will find some way around the ban. Assuming even half of the 350 million guns are handed in, you are looking at 175 million X $500 = $87500000000. Pocket change for the government, right? But wait. You have to have facilities to store them until destruction, people to staff and guard those facilities, someone to transport and destroy them. All those people would need to be paid. Local police forces don't have the resources for something like that. So, we can probably multiply that by 4 or 5. And then you will have people who will not comply. There are tons of reasons why, ranging from the fact that Americans hate being told what to do by anyone, to people driven by ideology, to people who are just going to be lazy about it. This is where it's going to get bad. Really bad. Police forces in US are already quite fond of drug raids. Now, they will do gun raids. Look up Waco and Ruby Ridge. That's what gun raids look like. There will be more of that. Police will also feel even more justified shooting people who they think might have a gun, since that would automatically mean a criminal. I will give you three guesses which communities are going to be the hardest hit. First two don't count. The answer is "the minority ones". Things might quiet down in a couple of decades, but the death toll until then will make foreign wars US likes to fight pale by comparison.
A uniform rope of mass M and length L is fixed at its upper end vertically from a rigid support. Then the tension in the rope at the distance l from the rigid support is?
A simple mechanics problem.Consider a rope of mass M and length L, hanging from a rigid support at one end.Let there be a point P, at length l from the rigid support.Now we have to calculate tension at this very point. A pretty simple way to do so, is by dividing the rope into two masses (one above the point P and one just below it) connected by an ideal string. The tension in this string will give the tension at length l.Proceed as follows.(For the mass of m2,m2= mass per unit length times length of mass m2)The beauty of physics allows you to verify your results and “feel” them.At the lower end of the hanging rope, tension is zero.Put l=L in the final result. The tension will come out to be zero.At the uppermost end of the hanging rope, tension will support whole weight of the rope, i.e. mg.Put l=zero in the final result. You will end up getting T=mg, as expected.
How can I hang out with rich people when I'm actually poor?
As a pretty wealthy person, I can at least give you my perspective: It's important to pretty much everyone to feel valued by others. If you're rich, you face some significant challenges in this area. First, you don't need to do something in life that people care enough about to pay you a salary. And since work is hard, and the salary won't change your lifestyle, it's easy not to do very much of it. So you don't get valued for your work. Second, you're valued by people for your money, either directly (they want some of it, for good and bad reasons) or indirectly (they envy some crap you bought and wish they could buy it too.) Being valued in either of those ways is like junk food. It just doesn't fill you up.So rich people, to the extent they can, try to break out of this trap and be valued in a way that matters. Warren Buffett's son is a serious composer. Melinda Gates works like hell to save the world. Angelina Jolie adopts children. George Cluny champions the people of Darfur. People become very painstaking, selective collectors of stuff like wines, because then they can be appreciated by other wine connoisseurs. Lots of wealthy people put tremendous effort into volunteering on non-profit boards or otherwise trying to help people. All this so that they can be valued in a way that matters to them.The ones that don't, the Trumps and Kardashians and Paris Hiltons of the world? They're trapped. They don't know how to do anything but eat more junk food. They feel crappy and bloated and eat more. Often they don't even realize it. But they're generally more depressed and less fulfilled than most people who aren't really deprived.So take that perspective and rethink your question. Why do you want to hang out with rich people? Do you want to be in the entourage of some billionaire? That's got to be the worst of both worlds - a junk food diet where you don't even get enough big macs to eat. Do you want to learn something from them? There are lots more interesting people out there. My guess is that this is an insufficiently thought-out fantasy - you don't really want this, it just sounds like it would be cool. If I'm wrong, and this really is what you want, then the trick is to find a group of wealthy people who you can authentically value for something other than their wealth. Then you can give them that gift.
What was the cause of the battle of shiloh?
The Confederate theater commander, Albert Sidney Johnston, believed that he had to strike the growing Union concentration at Pittsburg Landing under Grant and Sherman, otherwise the entire region would fall to the Union. He managed a surprise attack against Grant near Shiloh church. During a two-day back and forth battle, Confederate gains were lost, and Grant remained in control. Johnston was killed in the battle.