Homework Help

The problem is the integral of 1/[math]x^{.2}[/math] from x=0 to x=8. Apparently it's not divergent, but the problem 1/[math]x^{1.4}[/math] is and I understand that. Why is one divergent and not the other, and how would I get the area of 1/[math]x^{.2}[/math] from x=0 to x=8?

Hi, i have a question change P <-> Q into dnf and cnf which i believe that it is below...correct me if i am wrong.... i). p<->Q = (P->Q) ^ (Q->P) this is the DNF form ii).¬(¬P->¬Q) ^ (¬p->¬Q) this is the cnf form am i correct??if not then explain why plz...

1. Use Venn diagrams or membership table to demonstrates that: A U (B ∩ C)= (A U B) ∩ (A U C) is a true equation for any sets A, B, and C. If you use Venn diagrams , show the three circles overlapping and include a legend pointing out which set is represented by witch shaded regions. 2. Find the best conclusion for this Lewis Carroll problem . The "best" conclusion is one which uses all of the given information. A. No one who is going to a party ever fails to brush his hair. B. No one looks fascinating , if he is untidy. C. Opium -eaters have no self-command. D.Everyone who has brushed his hair looks fascinating. E.No one wears white kid gloves unless he is goi…

Ok so I'm trying to finish my Pre-Calc project and I cannot figure out what I am doing wrong. Here is the problem: I have a student loan for $32,016. For loan 1, the interest rate is 5%. Loan 2 has an interest rate of 6.8%. I am putting $400 each month toward the loan and am trying to figure out how long it will take to pay off each loan. Can anyone figure out what I am doing wrong? Obviously loan 1 will be payed off quicker but I keep getting loan 2 as the quicker payoff. I attached the problem. Hopefully it comes out ok. Thanks for any help loan problem.txt

So I was absent the day it was discussed in class, so I want some help. Here's the question from the book I'm using: " Write the electron dot structure for the compounds formed from the combination of the given pairs of elements. Identify the bonds formed between them." So what topics should I read about, and how is it done?

hi, this is my first post here, i hope u can help me out for my lab protocol! we need to do enzyme assaying for malate dehydrogenase. the substrate we are using is oxaloacetate and NADH. what is an appropriate concentration to use? it should be higher than the enzyme so that it will not be the limiting factor right? same for oxaloacetate

Hello all: I am unsure if my answer to the following answer is correct. Could someone please confirm or refute it? Thank you! P.S.: If someone could tell me how to enter chemical formulas with LaTex without the italics, I would appreciate it as well! --- 1. What is the oxidation number of S in sulfolane [math]C_4 H_8 O_2 [/math] ? Structure: http://en.wikipedia.org/wiki/Image:Sulfolane-2D-skeletal.png --- Explanation for my work: My answer is +4 for S's oxidation number. According to the image, S is double bonded to the two oxygens so the formula must be [math]C_4 H_8 SO_2 [/math]. Therefore, I treated the [math]C_4 H_8 [/mat…

If your hot coffee loses 50 kJ of energy as it cools and the volume shrinks because of thermal contraction, how large is the change in the internal energy of the coffee? How large is the change in the enthalpy? Explain. a) +50 kJ b) -50 kJ c) >50 kJ d)>-50kJ e)<50 kJ f)<-50 kJ (I really don't know where to get started on this problem. If someone could give me a thorough explanation, I'd greatly appreciate it!) Thanks in advance!

Hey I was wondering if in writing Ionic equations you multiplied the subscripts outside the () in a polyatomic ion like in (SO3)2

Hello there This may sound daft to some but my 7 year old daughter has recieved a challange from school and we just cannott figure it out and its driving us mad lol ! I hope someone on here can solve it .. please !!! Basically you have a mug and a balloon you have to lift the mug of the table with the balloon . the mug cant be touched with your hands and you cant use anything else .. just the balloon !! Any ideas anyone ? Many thanks Dina (A FRUSTRATED MUM )

find in (1+x+x^2)(1+x)^n the coefficient of (a) x^7 (b)x^8; and © x^r for 0<=r<=n+2 i've no idea wher to start this one

Hey, I have a question in the book, solved it one way, and the book solution in cramster has another way. I am not sure if I'm right or not, since in the case of these questions, multiple cases for solutions are possible. Any help would be appreciated here.. where was I wrong (was I?) Question: So.. I started with the premise that [math]\frac{dQ}{dt} = Rate In - Rate Out[/math] Rate In: [math]\frac{2}{4} (1+ \frac{1}{2} sint)Q[/math] Rate Out: [math]Q/100 * 2[/math] So, [math]\frac{dQ}{dt} = \frac{1}{2} (1+ \frac{1}{2} sint)Q - Q/50[/math] [math]= Q\left( \dfrac{1}{2} (1+2sint)-\frac{1}{50} \right) [/math] [math] \frac{1}{Q} dQ - \…

We recently did a lab involving a mixture of three proteins; two known and one unknown, and the goal is to determine the identity of the unknown. After we took the absorbances of all the fractions at three different wavelengths, we were asked to "prepare a graphof OD600 that includes all three absorbance profiles". I have absolutely no idea what OD600 is, since we did not take the absorbance at 600 nm, nor how I could put all three wavelengths on one graph. Any help would be greatly appreciated.

Kieran takes off down a 50 m high, 10° slope on his jet-powered skis. The skis have a thrust of 400 N. The combined mass of skis and Kieran is 50 kg (the fuel mass is negligible). Kieran's speed at the bottom is 40 m/s. What is the coefficient of kinetic friction of his skis on snow? So far my work shows... I know that force due to mass and gravity is 490. I'll call it [math]F_{g}[/math]. I found it's x and y components to be [math]F_{xg}[/math]= 85.1 and [math]F_{yg}[/math]= 482.6. So [math]F_{N}[/math] is 482.6. That gets me one step closer because I know I need to solve [math]F_{k}[/math]=[math]M_{k}[/math][math]F_{N}[/math]. I don't know how to find the force …

um... Im a 1st year high student and i need help on our Investigatory project what is the method for making ceramic products using cement and eggshells... plz reply this instant because i need to pass it tomorrow... thanks for the person who will help me!!

in how many ways can the equation [math] x_1 + x_2 + x_3 ......+ x_n = c[/math] be solved for integer solutions. This apparently uses the multinomial coefficients.though I could not understand how . Also, what are the solutions if [math]x_1[/math] has constraint on it like < 10,etc. thanks in advance.

I am lost, if someone could explain what the question is asking in simpler words that'd be a great help as well

Need a study break - Learn about water catchment management (via a game)! Catchment Detox is an online game where you're in charge of a whole water-catchment. You get to decide what activities you undertake (cropping? restoration?) with the aim of fixing environmental problems and providing food and wealth for the population … and you can get an idea of just how difficult it is to manage a river catchment! eWater CRC developed a part of its catchment management software (CONCEPT) into a challenging online game. Related links to more information: * ABC Catchment Detox * CONCEPT - a tool for creating dynamic conceptual diagrams

Unfortunately I am close to what you would call math notationally illiterate and I have found that to understand physics formulas translating it to a language which I know helps. I have this formula... After translating it I have... function newtons_law_of_gravitation($G,$m1,$m2,$r12){ # ^ unit vector # r12 vector from m1 to m2 # m1 mass 1 (kg) # m2 mass 2 (kg) # F1 force on m1 ( Newtons ) $F1 = ( ($G * $m1 * $m2) / pow($r12,2) ) * $r12; return $F1; } Is this essentially correct? All of the items above the line are multiplied and then r12 below the line is multiplied to the power of two and then used to divide what is abo…

i have i problem with many parts to it that the forums may be able to help me with. ive been given a scenario which involves gravity surveys along a path, in summary here it is: a gravity survey is taken at an initial latitude of 45 degrees and has an azimuth of 30 degrees. ive also been given a list of gravity data readings, but its not the problem. the question asks to apply necessairy corrections and i know latitude correction is one. my problem is how to determine the correction for each reading given. i know i have to draw a triangle from the start (45 degrees) and a line going out from there 30 degrees. i have found the distance ive traveled north when i tr…

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can anyone help me figure out what type of reactions these are? not a real brain when it comes to chemistry. NaOH + HCl--> NaCl +H20 4Fe + 302 --> 2Fe2O3 CH4 +2O2 --> CO2 + 2H2 BaCl2 + Na2SO4 --> BaSO4 + 2NaCl Zn + 2AgNO3 --> 2Ag + Zn(NO3)2 2HgO --> 2Hg + O2 and explain how you come up with these. thanks

On dilution of different amts. of H2SO4 in given volume of water, why doesn't the temp. of the resulting solution not vary linearly. Thankyou .

Could someone please show me how to do this problem? Thanks in advance!

On dilution of different amts. of H2SO4 in given volume of water, why doesn't the temp. of the resulting solution not vary linearly. :