Homework Help

I have learned that the mass of a proton is 1836 or 1837 times greater than an electron. (found this information at numerous locations) I have also read this statement: "If the mass of the proton were to increase, then life wouldn't exist because atoms could not form the molecules we require" I have not been able to find any scientific proof to that statement and would love to be guided to an article or answer. Thanks -Rob

Hey guys, Firstly, there 3 chapter that I'm revised related (I thought) with this thread: Electricity, Electromagnetism, Electronics. This would be a long journey(If I have a lot question to ask) So, I hope anyone can give me some intuition for me to solve my confusion. let's get to the first doubt, it's about voltage in series circuit and the nature of voltage itself. based on Textbook, Voltage = "The potential difference between two points is the work done in moving one coulomb from one point to another." This give me a thought of that "I can put Voltage as a 'potential energy' in a circuit, but I wonder how that happen?(my first question)" …

Ok i have a set of questions which asks: Use De moivres theorem to obtain solutions to z^n=i for n=3,4,5 Use a graphing software to plot these roots on an Argand diagram generalize and prove your results for z^n=a+bi where [tex]|a+bi|=1[/tex] What happens when |a+bi| does not equal 1 So the first 2 bullet points i can do, so i have found the roots and plotted them on the diagram. Now what the heck do they mean when they sa generalize and prove your results for a+bi=z^n????? will appreciate any help thank you

Hello. Can anyone help with identifying this picture and what the scientific significance might be? Any help would be greatly appreciated. Thanks!

what makes the fish eye better in all angles?. i need a convincing answers for extra points!

Hello Guys thanks for opening up this topic so here it is: 1) An ultrasound scanner is being used as a sonar device to locate a metal fragment embedded in patient. The method is to produce a sound pulse and time the echo from the fragment (pulse-echo technique) if the sound speed in tissue is 1500m/s and the time from the pulse to echo is 4 microsecond , what is the depth of the fragment? When i analyzed this problem, i first thought about the Sy , as the one that is looking for, but im not really sure please help me guys thank you

Here's the question I was given: Differentiate: f(x) = 3x +x3 my answer: f'(x)= (ln(3))(1)(3x) + 3x2 = (ln(3))(3x) + 3x2 However, wolfram gives me a slightly different answer: f'(x) = 3x2 + 3x(log(3)) Confirmed with two different widgets: http://www.wolframal...7197a484f4257c0 http://www.wolframal...a4fac87af8b07b2 _________________ This goes against the rule I've been taught for deriving exponential functions: f(x) = a^(g(x)) f'(x) = (ln(a))(a^g(x))(g'x) I don't really have any reference to understand why wolfram threw in the base10 log instead of the natural (base(e)) logarithm. …

I have been posed the following question (see attachment), I believe I have correctly answered the first three questions however am struggling with the last two. Could someone help me, this is a very new topic to me. Thank You

In which language did first compiler on the earth was written? Basically compiler is a program written in some language to compile other programs but how does a compiler program will compile?

Hi All, What does the following plus mean in computer theory and what words would the following example produce. (aa+b)* Stephen

Write YES or NO in the accompanying table to indicate whether the rabbit antisera listed at the top react with the mouse antibody components listed at the left. (Solution of mine attached) underlined, bolded answers are answers that are different from book solution. I don't understand why would rabbit anti-mouse γ chain antibody would react with any fragment of mouse IgM molecule (Or i didn't get it right at all) 8.bmp

It took 20 years to construct the great pyramid of Khufu at Gizeh in Egypt. This pyramid is 500 feet high and has a square base with edge length 750 feet. Suppose also that the pyramid is made of rock with density ρ = 120 lb/cubic foot. Finally suppose that each laborer did 160 ft/lb/hour of work in lifting rocks from ground level to their final position in the pyramid and worked 12 hours daily for 330 day/year. How many laborers would have been required to construct the pyramid? I have attached my work here. Thanks for helping.

because Good Day guys, i do not intend to get the answers from you i just want some ideas because honestly i cant understand my teacher. i have a lot of Questions and problems here: 1. Prove that a gun will shoot three times as high when its angle of elevation is 60as when it is 30, but will carry the same horizontal distance.

I HAVE A QUESTION THAT WHAT ARE THE APPLICATIONS OF GROUP THEORY IN THE FIELD OF COMPUTER SCIENCE AND HOW THEY APPLIED?

having a problem with a few questions regarding the analysis of the plasmid. i have got the electrophoresis image and from there i have worked out the distance migrated for each band. it is from question 2 that i am unsure of what to do and how the graph should turn out. i would really appreciate any help i get. 1) From the photograph determine the migration distances (in mm) of the molecular weight standard DNA bands and of the bands of pBR322 cut with the different enzymes and construct a table with this data. i have done this question. and got the folowing results Fragment size (bp) Migration distance (mm) log of fragment size 3500 56 …

I predict products of the reaction between iron and sodium chloride to be iron chloride and sodium ( FeCl + Na ). Is my thinking correct?

Anybody know where I can learn how to answer this question? I have no idea where to even start and I can't seem to find anything on Google. Any help would be much appreciated. Thanks.

Hi, Can anyone explain to me how to do pipeline diagrams? Here's an example of an exam question: I don't just want the answer to this question, if someone could help explain to me how to do it that would be great!!

PLease check if my answers are correct" Pyulo Pascual had abroken heart because he saw his beloved in a romantic mood with Zac Efron. So Pyulo jumped from top of the building (a) What is the distance he fell in 1.5 sec? (b) What was his speed after falling 10 m? © HOw Long did it take him to fall 15 m? my answers: (a) 14.715m (b) 10.03 m/s^2 © 3.06 sec. thanks guys

Hey guys Im just here to ask if my answer is correct, if not please help me because im trying to get ready for our exam tomorrow , so here it is: Five students went on a trip to the North of California. They traveled at an average of 40km/hr in 3 hrs before taking a snack at Mcdonalds. On the second leg of the trip , they traveled at an average of 20m/s in 2hrs. before taking a coffee break at Starbucks. Then they finally traveles at an average of 60 ft/s in 1 1/2 hours before reaching theyre final destination.What was the total distance they covered in MILES? here is my answer S= 53.885 miles * i used the V= Vi +Vf/2 and S=vt thanks guys

Bistonbetularia is one species of engish moth found in Manchester,England. In this type of moth, there are 2 colors – light and dark(black). It was found out that prior to 1850, dark moths constituted less than2% of the population of all English moths. Later, the frequency of dark mothsincreased through the years. By 1900, 95% of the moths in Manchester and otherprime cities in England were of the dark type, whereas less dark moth type wasnoted in rural areas. The moth population changed from mostly light colored todark colored moths. The moth’s color was primarily determined by a single gene.When background information was investigated, it was found that in the late1800’…

Find the value of x if (23)x = 1111000102 I've converted it into decimal, which is 482. But that's where I get stuck. Any ideas?

Hi, I'm doing a research project on the Genetic Engineering in crops and I need a few peer reviewed science journals or any good websites that explain some of the techniques involved in Gene cloning (plants) preferably Gel Electrophoresis and PCR and some of social, environmental, economical impacts involved with gene cloning. Oh and what is the human demand for gene cloning in plants? Thanks in advance, at this point any input would be greatly appreciated. THANKYOU^^

hello, i have 6 variables a=5 b=10 c=7 d=9 x=1 y=2 when i solve this equation using gauss-jordan it gives me wrong answer a⊕0⊕c⊕0⊕0⊕0=2 0⊕b⊕0⊕d⊕0⊕0=3 a⊕0⊕0⊕0⊕x⊕0=4 0⊕b⊕0⊕0⊕0⊕y=8 0⊕0⊕c⊕0⊕x⊕0=6 0⊕0⊕0⊕d⊕0⊕y=11 ⊕ is XOR thanks for your help

I have to make a contig from a for and rev sequence. I've got the waveforms, and thus the sequences.