randomperson

The rate of the reaction of a spherical solid dissolving in water is given to be

rate=kM^(2/3) M=mass

The question asks to find an equation that relates the rate to the surface area given that density p=m/V, V=(4/3)pi(r^3) and surface area A=4pi(r^2)

I started off by substituting M for p*V, did some algebra and got this ugly fraction I don't know how to simplify and am not even sure if its right. Any help would be appreciated

I was wondering what the truth is about getting a job with a BS in chemistry. What can I really expect when I graduate? I'm going into my junior year of college and have been doing a lot of reading lately about job prospects. All I've read so far is article after article and post after post about how the job market for chemists in general, BS,MS, and PHD alike, is terrible. Many of them advised to not even major in chemistry!

Since the time I decided I wanted to do chem, which was senior year of high school, every person I ever told was always greatly impressed with my decision and assured me that I would be very successful. My professors always tell us we are the ones who will have jobs when we graduate and my fellow science majors would always talk about how we will have well paying jobs when we're done.I also watched my brother graduate with a BS in physics and automatically get a job as a electrical engineer making a salary of 60K a year. Basically everyone in my life has only told me how easy I will have it when I'm done with school and I was under the impression I would have it as good as my brother, but everything I've read has told me otherwise.

I may be panicking just a little. I do like chemistry, but I won't lie that a large part of the reason I decided to major in it was because I thought I would be successful, not be unemployed for a year till I finally get a meager job that only makes 30K year and can barely pay my mountain of school loans.

I'll admit the articles I read strictly spoke about research jobs and I don't particularly want to spend my days doing obscure research as a lab lackey, I want to work in some type of industry but I also occasionally toy with the idea of teaching ( I realized teaching salaries aren't the greatest either). Once again, I've been told there are tons of jobs in industry for chemists but I'm not sure that's true. What type of jobs can you realistically get with a BS in chemistry? What is the job market actually like right now? Hypothetically, if I could switch my major, do you think I should?

I would like to start writing fiction. Short stories really. Nothing serious, just for fun. But I would like to be able to post it somewhere people can read it online. I've written a few things before but the problem is almost everything I write goes unfinished. I really haven't finished anything. Sometimes I think I have a great idea one day and spend the whole day writing about it but then the next day I read it over and I think it's a completely stupid idea and start on another one. Other times I begin writing something but I get to a point where I just don't know what to write next. Not because I don't have any ideas but because I have too many ideas.I either see tons of possibilities of what can happen next in my head and I can't decide which one to choose or I keep writing and writing and what was intended to be a short story turns into something much longer. Do writers usually have this problem? I find it hard to imagine how authors are able to finish anything! Do they even like their books? Do people just commit to their ideas to get something done even if they think its bad the next day? How do you pick your ideas and commit to it without hating it in the end? I just want to be able to finish something and be happy with it.

I have this game that is suppose to have a JLabel at the to keep track of the number of wins, losses and the numbers of games played. The wins, losses and number of games played are being incremented correctly but they are just being written over the previous number on the JLabel so you can't see it. I tried a repaint method, setting the text to an empty string and then adding the info again, and a few other things but none of them seem to be solving the problem. Anyone know what I should do?

I have a class called a point that creates a point object and stores the x coordinate and y coordinate for that point. The x and y variables are generics so any type could be entered. Two points are equal if their x and y coordinates are equal. In the program I need to write the equals method that does this comparison but I'm having trouble getting the values from the point object being passed in and comparing them as generics. I am either getting the program to compile but print out false for all cases or get compiler errors such as Type safety: Unchecked cast from java.lang.Object to Point<E> and etc. Is there a way to do this and if so how?? Any help would be appreciated.

For this week, I have to write a program that flips a coin 100000 times and then prints out the number of "run heads", consecutive heads, of length i. For example HTHTHHHT would result in 2 run heads of length 1 and 1 run heads of length 3.

The last part is the part that really confuses me. I can easily tell you how many times heads appears or even the run heads of the longest length but I don't understand how I can split them up depending on length and have a counter. Any help would be appreciated

One of my assignments is to write a recursive method called evens(n) that prints out all the even numbers from n to 0 as well at the total number of even numbers from n to 0, where n is a positive integer provided by the user. For example the output should look like:

The number of even integers between 6 and 0 is: 6 4 2 0...4

Getting the program to print out the even numbers was easy but now I'm having problems computing the total and getting it to print out at the end of the string. Since its a recursive method I can't just initialize a variable i as 0 and then increment it by one like I would normally do, it would just count backwards. Any ideas how I would do this?

One of the assignments for my computer science class is to write a program to check if a number is a palindrome or not, a number that is the same forwards and backwards, for example 1221.I have a program that works but only for numbers that fit type int. The program must work for large numbers as well, for example 10+ digit numbers. Simply changing the variable types to long doesn't seem to work for some reason and I can't figure out what else I can do without using strings or other things we haven't learned in class yet. Any ideas as to what I can do to fix this will be helpful.

In my physics lab we measured the time it took of a pendulum of various lengths to complete 10 oscillations. Dividing the time by 10 should give us the period and then using the formula P=2pi (L/g)^(1/2) we could solve for g. While we were doing the experiment my professor came by to talk to us and explained if we made a period vs square root of L graph we should see a straight line and the slope of that graph should equal 2pi/ g^(1/2) therefore we could solve for g. I made a P vs sqrt L graph and got a perfectly straight line (R^2=1) but solving for g with the slope doesn't give me a value anywhere close to 9.8.

I don't really understand why my professor told us to do P vs sqrt L rather than T^2 vs L graph but this is what he told us to do. Is my professor wrong? Did I calculate the period wrong? I don't understand why this isn't working out?

For my physics lab we were asked to find the damping time tau from the equation A(t)= A0e^-t/tau in two different ways. The first way we were suppose to make a graph of the log of the amplitude vs time and get the slope. I was told -log(e)/tau is suppose to equal the slope so I used the slope of the line i made and solved for tau. The second way was to let the spring oscillate till the amplitude decreased by a factor of 1/e and record the time. The time should be equal to tau. The problem is my values for tau are drastically different from each other.

On one hand, the excel graph i made for logA vs t the slope equals -0.001 so

-log(e)/tau = -0.001

tau= 434.29s

On the other hand the tau we observed in the lab was only 91.85s. What am I doing wrong? I need the correct value of tau to finish the last part of the lab which is to find the damping term lambda.

Unfortunately my dell inspiron 15 laptop doesn't have a HDMI slot so I've been trying to use a VGA cable and a RCA cable to connect it to my TV. I have no problem getting a video display with the VGA cable but there's no audio output when I plug in the RCA cable even after messing with the audio options. I was told that all I had to do was plug one end into the headphone jack on my pc and plug the other end into the red and white jacks on the TV. Is there something else I need to make this work? Is there a setting on my TV I don't know about? Or is this just not going to work? If so, what set up should I be using?

The flash drive is not even a year old and has only been used a handful of times. The last time it was used was about a month ago, i had to reinstall the network driver on my laptop. Now when I went to use it today it seems to be completely unresponsive. My desktop pc and my laptop won't recognize the flash drive and the light on the flash drive isn't lighting up. The USB ports on both computers seem fine because my external hardrive is working perfectly. I don't really understand why it would suddenly not work but more importantly what can I do to fix it?

The question is: Use power series to solve the differential equation y''=xy

I'm pretty lost. I originally got this question wrong and I'm still getting the wrong answer after multiple attempts. A solution would be helpful. Thanks

How large should n be to guarantee that the midpoint rule approximation to the integral from 0 to 1 of sin(x^2) is accurate within 0.01?

I'm having trouble finding K. I tried pluging in 1 to the second derivative since sinx is always less than or equal to 1 but that doesn't give me the right answer. Any help is appreciated

In a hydrogen atom, from what energy level must an electron fall to the n=3 level to give a photon with a frequency of 2.34x10^14 Hz?

a.2

b.4

c.5

d.6

e.7

I tried solving this multiple times with many different possible numbers but no matter what I try it seems i don't get a number close to the correct answer

I like games but I don't get the chance to play a lot, and when I do it's hardly on my pc. That's why when I was buying a new laptop I decided not to spend the money on a graphics card, so my pc only has one of those chip sets, Mobile Intel(R) 4 Series Express Chipset Family to be exact. Dragon Age Origins is one of those games I really want to play though. I used the system requirement lab on that site Can you run it?, I wasn't surprised it said I failed because of my video card. But, it also said I can't run Civilization IV and that runs fine when I play it at normal settings, so I want another opinion. I know the games are very different but still.

Is there any way DoA will run on my cp? Even at the lowest settings? Or will it lag like crazy?

Here's the deal my car doesn't have a tape player or an aux input for the stereo but i don't want to get an FM transmitter because they're too expensive and they don't even work that well. Is there something else i can do so i can play my ipod in the car like get an adapter of some sort that plugs into the lighter preferably. Or is there an adapter i can get that will give me an aux input though i don't think i can take the car apart its not mine. Basically any ideas will help even if you know of a good FM transmitter that isn't ridiculously expensive

My school required me to buy an IBM Think Pad T43 and I am convinced it is the worst piece of technology ever made. Since I got it 3 years ago I've had more problems with it than I can remember. The most recent problem I've been having is that it won't boot up and it says that a windows file is missing or corrupted (Windows XP). This is probably the 3rd or 4th time this has happened too.

We have a teacher at school who is suppose to fix our computers but he insists on just wiping the hardrive for everything instead taking the time to fix the actual problem. Plus im convinced i know more about cps than him lol.

So my question is why does windows keep getting corrupted on my laptop since it happened 3 or 4 times in a couple of months. Do you think it is a hardrive problem and I have to replace it? In the past I've had issues with the RAM and had to take a stick out but i never replaced it, since then my cp has been running on 1 stick that's about 500 something MB. Could there be something wrong with the RAM again? And finally, is there a better way to fix this without having the windows disks?

I want to have a sleepover with about 10-15 girls at my house. I already know somethings we're doing like making pizzas, movies at some point during the night maybe, and i have a wii we we'll probably play too but i need something else to do so people won't get bored. i mean not everyone is going to want to play video games all night (plus i only have 2 multi-player games for wii)

I don't really want a theme i think they're kinda of corny

I am not a very girly girl so don't say makeovers/spa (I'm not a tomboy or anything though)

Please keep in mind i am turning 16 not 12

I just want something casual that everyone will have fun doing