Homework Help

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.

Propose a synthesis of the following target molecule using benzaldehyde and furan as the major organic starting materials. In your synthesis, note the potential problems that may be encountered.

I am supposed to make notes explaining the exact mechanisms for these tests: Molisch's test, Anthrone test, Benedict's test, Barfoed's test, Bial's orcinol test, Seliwanoff's test, Osazone test All I could find are sh***y notes from my seniors who can't even spell 'Molisch'. All their structure diagrams are, to put is mildly, retarded (some carbons have 5 bonds etc.). Please help me find the exact structures of the reagents involved, the exact mechanism of the reaction, what's the test for etc.

Hello Guys! I'm looking for a Biology Investigatory Project. By next year, we will be defending our IPs. I can't find any so can you guys help me? I'm looking for a medium difficulty Investigatory Project. Thank You Very Much!

I'm faced with the following problem, which I think I have solved, but I need to know if it belongs to a general class of problems incombinatorics and whether it is mentioned in books so I can refer to them. Let's suppose we have N symbols we want to assemble in a certain order. Say we have the symbols A, B, C ,D ,E and F in the following order 'ABCDEF'. We want to know how many words formed by the same symbols (or alphabet, but each symbol has be used only once) will share no symbol at a given position with the reference word 'ABCDEF'. For instance 'BADCFE' is one of such words. In general, the number of such words is given (recursively) as: C(N) = (N-1)* (C(N-1) …

I have some data with defined standard error. I should calculate the ln() of each data. do you know what would be the error of new data?

Can someone please answer the question? I don't understand the definitions given in the book or on google. Does anyone have an easier way of explaining it to me. Thank You

I am busy studying for an exam and I am stuck on a particular question. I am not sure how to relate the flow rates to each other without getting more than one variable in the final equation. When I get one variable it solves incorrectely because you using four equations that become dependent when you relate more than two variables. Picture is down below. I may be over complicating something but I am stumped at this point in time. Any help would be much appreciated.

In my problem each node is associated with some metric. At each step only a subset of edges are candidates for contracting or merging. Contracting one edge may affect the subset of edges that are legal for contracting at next step. By contracting one edge, we also replace the metrics of the two endpoint nodes with a new smaller metric. We are trying to find an H such that the sum of the metrics of nodes in H is minimal

calculate the full load primary and secondary currents of a 60 kva transformer with turns ratio of 165:6 fed from a 6.6kv supply and the answers are 9.1a and 250a my answers are different can anyone tell me if this is right and if so how? thanks

Hi, I am really stuck on this question, can someone please help me how to do it ? A sample of plasma was assayed and the absorbance was found to be 0.35. 0.95ml of this sample was mixed with 0.05ml of the 100mmol/L urea solution and the mixture was assayed. The absorbance was found to be 0.45. Calculate the recovery of the added urea and comment briefly. Recovery = ?? % Please help

Hey guys, I'm having trouble working out this genetic problem (it is a three part problem) : The drosophilla mitant traits vermillion eye (ver), wings absent (wab) and crowssveinless (cvl) represent vermillion eye colour, no wings and no crossveins in the wing, respectively. A male with vermillion eyes and wings absent was crossed to true breeding crossveinless females. Of the F1 progeny, half of them had the wings absent phenotype. The F1 females showing this wings absent phenotype were then crossed to a true breeding individual showing the vermillion eyes and crossveinless phenotype. The phenotype from a total of 1000 progeny were as follows: wildtype 6 c…

I am seriously lost with Proofs. I am allowed to use Rules of Inference (MP, MT, HS, Simp, AD, Conj, CD, and DS) and Rules of Equivalence (AB, Dem, Com, Assn, Dist, DN, Cont, MI, EX, ME, and RE) Here are the ones I am working on right now. Any help would be greatly appreciated. #15 1. (A∨B)∙(A∨G) 2. M→~A 3. ~Q→(~B∨~G) ∴ M→Q #16 1. Y∙(~N∨A) 2. ~Y∨N 3. (A∙Y)→~~K ∴ K #17 1. ~G→~F 2. (~F∨G)→(H∨J) 3. H→Z 4. J→~P ∴ P→Z #18 1. (D∙E)∨(~D∙~E) 2. (H∙J)→~(D↔E) 3. ~~H∨J ∴ J↔~H …

Can someone please answer the abbove question for AQA Chemistry Unit 1. about the plate tectonics Thank You

We are told in 10th class that electropositive (like alkali metals and alkaline earth metals) elements and electronegative elements (like halogens) form ionic compounds such as sodium chloride. But now in 11th class we are told that lithium and beryllium (which are too alkali and alkaline earth metals respectively) and some more metals do form covalent compounds. Why should lithium form a covalent bond with chlorine if lithium can donate one electron and chlorine can gain one electron easily to form an ionic bond ? Its a bit confusing...

Hey everyone, I'm doing my coursework for mathematics, the marks deduced from wrong answer is considerably huge. I am prone to mistake so I will take safe step by checking my answer here. Hope anyone can give a hand! note: I'm student of SPM, O-lvl equivalence. so, basically there no "hardcore math" here. though so it's recommend to use for higher mark. (silly marking) Section A, Part II. Cute Bakery produce 600 packets of muffin per day with each packet containing 5 pieces. Each muffin has a mass of 20g. Shop operates 5 days a week, eight hours a day, has three employees who each of them receives a salary of RM 150 per day. As a financial planner f…

Estimate the %CV for the urea assay at two concentrations and comment on results? Using the data in table 1 which is below. (Table 1) Vol urea stock = 2.5 ml Vol of creatinine stock = 1.25ml Diluent = 6.25 ml total vol is 10 ml (Table 2) Absorbance (low) Urea concentration (low) Absorbance (high) Urea concentration (low) 0.25 0.67 0.252 0.72 0.26 0.70 0.24 0.65 0.238 0.68 0.245 0.715 0.251 0.63 0.161 0.645 0.25 0.68 0.245 0.75 I am told that I am supposed to use the concentration values to calculate CV% and not absorbances, but I have no idea how to get the concentration values ????

Hi all, I am trying to model temperature variation with time of compressed air energy storage in a salt cavern. For now I have considered a spherical (hollow) cavern in which air is injected. I have to solve {T}+[M]{T_dot}={Q} (here, Q is the first term and all other entries are zero). My question: I am trying to get an expression for Q as a function of time. It will constitute (heat from injection + heat from convection + heat from conduction through the rock mass), right? Only heat from conduction through the rock mass is time dependent in my expression. Q_inj = m_dot*Cp*(Tinj-Tair) Q_conv = A*h*(T_cav.wall-Tair) Q_cond = V*rho*c*(Tinit-Tamb)*exp(-t/k)…

Hey I just had a recent science experiment with benedict's solution and egg whites. I would assume there would be no monosaccharides present, however, the test yielded a purple colour. From searching online and my previous knowledge, purple is negative result, but perhaps a positive result? I was thinking when the Cu (II) ions become reduced they turned red which blended with the blue solution to form a purple colour, I discovered the composition of Egg whites had 4% glucose. Do you think this is a reasonable hypothesis? I thought about this as a contamination issue, however, there have been many results which other individuals yielded similar results, and my whol…

Hello, I came across this question and couldn't resolve it using the oxidation number method. Fe2+ + H2O2 --> Fe3+ + H2O Using half equations to balance it out, I got the right answer, though using the oxidation number method I got an alternate answer. Now the Iron is being oxidized, and the O2 is being reduced, with the oxidation number difference of 1 for both elements... What am I missing? The difference of oxidation number for oxygen should be 2... but I can't see how that works...