I've been having this issue for a few months, and it's getting more and more prevalent. When I'm pedaling with force, particularly when standing, the chain slips, which is annoying, counterproductive, and dangerous. Lately, it will happen I almost every other pump of the pedals. This occurs no matter which gear the bike is in, but for the record I usually keep it at the highest gear and highest friction. I've only had it for about a year, and I got it brand new. I would really like to fix this issue, since it's my only transportation.
I've had my Trek 3900 for about a year now, and I replaced the chain about 3 months ago, but otherwise it's running with the same parts it came with (not counting tubes and tires).  I had to replace my chain because it had gotten really rusty from riding in rain/mud/water on trails, and had started skipping.    My problem is, whenever I ride, if I get above or below a very light pressure when pedaling, the chain skips. I was wondering if this could be caused by my chain, which has gotten a little rusty but not as stretched as the other one was, or if I might need a new cassette?    I just readjusted my derailer, but it still skips.   Does anybody know what could be causing this?
Why can't I mine diamond, gold ore, or redstone ore? Normal blocks I can mine fine, but when it comes to diamond and gold ores, the block just gets "destroyed" (as in you can't pick it up). I'm playing on multiplayer with no spawning monsters. I am trying to count the number of bit-strings of length 8 with 3 consecutive zeros or 4 consecutive ones. I was able to calculate it, but I am overcounting. The correct answer is $147$, I got $148$.  I calculated it as follows:  Number of strings with 3 consecutive zeros = $2^5+5\times2^4 = 112$, because the 3 zeros can start at bit number 1, 2, 3, .., 6  Number of strings with 4 consecutive ones = $2^4+4\times2^3 = 48$, I used the same reasoning.  Now I am trying to count the number of bit-strings that contain both 3 consecutive zeros and 4 consecutive 1s. I reasoned as follows:   the strings can be of the following forms: 0001111x, 000x1111, x0001111..thus there are $2+2+2 = 6$ possibilities for bit-strings where the 3 consecutive zeros come first. Symmetrically there are $6$ bit-strings where the 4 consecutive ones come first.  Thus the answer should be = $112+48-12 = 148$.  clearly there's something wrong with my reasoning, if someone could point it out, that would be awesome. Thanks Find all entire functions $f(z)$ such that $|f(z)|=1$ for $|z|=1$  Hint: First show that $f(z)$ is a polynomial.  Clearly one can not use Cauchy Estimates to prove that $f(z)$ is a polynomial, the other way is to prove that $f(z)$ has a pole at infinity which I am not sure how to prove that, are there any other ways to prove that a given entire function is a polynomial ?  Thank you ! Copy every 512 bytes and skip next 8 bytes from Input file to a Output file I have an input file which is always a multiple of 520 bytes . i,e Input file 1- 1040 bytes Input file 2- 5200 bytes   I need to copy every 512 bytes from input file and skip the next 8 bytes from input files to output file i.e Output file data = Copy first 512 bytes of input file - Skip 8 bytes - Copy second 512 bytes of input file- Skip 8 bytes --.. Therefore, my output file should always be multiple of 512 bytes Input file 1- 1040 bytes        Output file 1 - 1024 bytes Input file 2- 5200 bytes        Output file 2 - 5120 bytes  I need to do this in shell script, any help here please. Would Dr Hannibal Lecter allow himself to be a consultant with Clarice if Miggs hadn't behaved improperly to her? What is the maximum texture size available on the iPad? How to restore a system after accidentally removing all kernels? Why “which” returns none on some commands I can run? I used which to tell the location of a runnable file. For example, which pwd returns /bin/pwd. However, I found which alias or which compgen etc returns nothing.   What are commands like alias? Aren't they executable files on my Linux? I am using bash 4.3 on Ubuntu. Sometimes I wonder if he is actually/really  as lavish as he   pretends to be.   I know that this sentence can work without either actually or really, but if we were to use one of them to make an impact on the listener, which one should it be? Deploy Community Builder audience page assignments with ant migration tool? Two blue arrows at top right of icons On some icons I am seeing a two blue arrows at the top the right pointing towards each other. I first noticed it on the icons on folders which I archived which happened randomly. I archived the folder and the text went blue as expected, then when I went to the folder again the text was black and the folder icon has these arrows. When I just recently installed Office 2007, I noticed the same arrows on the icons for the programs. OS: Windows 10 Pro 64-bit (the latest update: 1115) Application: Microsoft Office 2007 suite and file explorer What does `mv ./*` without specifying destination do? I accidentally forgot to specify destination before hitting the Return key. Where does mv ./* without specifying destination move the files and directories under current directory to? What is the difference between [@] and [*] when referencing bash array values? says:  If the index number is @ or *, all members of an array are referenced.  When I do this: LIST=(1 2 3) for i in &quot;${LIST[@]}&quot;; do   echo &quot;example.$i&quot; done  it gives the desired result: example.1 example.2 example.3  But when I use ${LIST[*]}, I get example.1 2 3  instead. Why? Edit: when using printf, @ and * actually do give the same results. How do you find out your very first chat in a particular chatroom? I want to know my very earliest/first chat post in a chatroom. Is there perhaps a way to search/view all my posts and sort the results? Amazon RDS I/O requests - 1 query = 1 billable I/O? I have an InnoDB database that I'd like to migrate onto Amazon RDS.  My current implementation, hosted on my own server, shows roughly 8M queries per month.   say that  I/O Rate    $0.10 per 1 million requests  Does 1 I/O = 1 query?  ie, will I be billed $80/mo for this amount of usage + the RDS fees? Few application icons not appearing in Ubuntu Dock after upgrading to Ubuntu 17.10 In C++, what is a virtual base class? I want to know what a "virtual base class" is and what it means.  Let me show an example:  class Foo { public:     void DoSomething() { /* ... */ } };  class Bar : public virtual Foo { public:     void DoSpecific() { /* ... */ } }; Filter log file entries based on date range Distribution of range of Uniform $(0,1)$ distribution Let $X_1,...,X_n$ be iid as $U \sim [0,1]$ with pdf $f(x) = 1(0 &lt;x&lt; 1)$. Determine the range distribution.   I have managed to determine the distribution of the minimum and the maximum, however I cannot/do not know how to determine the distribution of range.   Minimum:  $f_N = n(1-x)^{n-1}$ and maximum $f_M= nx^{n-1}$   I am aware that the calculation of range distribution is based on convolution: $f_R=\int f_{N,M}(x,x-r)dx$, However I cannot get the correct result, which according to my lecture slides is : $f_R= n(n-1)r^{n-2}(1-r)$  Could someone break this down for me ? My math background is not great How do I get the CPU temperature? How do I get the CPU temperature?