Homework Help

Is it possible to heat an object from a short distance, perhaps a 1 metre distance without using infra red or ultraviolet? Is it possible to use another part of the spectrum to transfer heat? Thanks again.

Hi, I am trying to solve the following: A person shovels driveways to earn money. She can shovel 12 driveways in 6 hours. She earns 18$ for each driveway.The person needs 360$ to buy a computer. How may hours does the person need to work? I am using unity method : 18$----6 hour 1 $----6/18 360$.....6/18 * 360 = 120 hours Some body please guide me. Zulfi.

Hi, I need help on a school project about EVA and im stuck on how ethylene and vinyl acetate join together into chains/polymerises. I understand a catalyst, heat and pressure are used but what is an example of a catalyst and what is the temperature and pressure (roughly) Thank you

Hello, I need some help from clever people. Regarding alpha, beta and gamma rays. If I was to shoot any of these at say a card of plastic is it possible to detect on the plastic that it had been shot with any of these? Using specialised camera perhaps? Would the rays leave a trace in any form? If not is it possible to shoot any type of rays or particles that would leave a trace on the surface of plastic at all, that Co ld be detected by a camera set up? Many thanks for all your wonderful help on this my friends.

I am given 3 traits Trait 1, wing shape, two different alleles Dumpy and Scalloped; Trait 2, tarsi, two different alleles Truncated and Wild Type; Trait 3, two different alleles Vestigial and Wild Type; Note: These traits are imaginary and bear no relationship with the real ones in terms of inheritance pattern or chromosomal location. A first cross is set up with a Scalloped, Wild Type, Vestigial male and a Dumpy, Truncated, Wild Type female. On the F1 we obtain 132 male flies with the following phenotype: Dumpy, Truncated, Wild Type and 127 female flies with the following one: Dumpy, , Wild Type, Wild Type. A secon…

Hey all, I've attached my problem and relevant spreadsheets. I've done what I could in excel to transform the flat-earth velocity (alpha) into a spherical one using the flat earth transformation equation, but I must have done something wrong because I can't find a velocity where p = 1/V (so 0.05 = 1/v or v=20). I'm not sure where I went wrong. Thank you!

Hi, I have a trouble with my homework. I don't know how to determine visibility of straight "l". Anyone know good method to do that? Green line is a visible part of straight. Dok1.pdf

Can someone please explain how to calculate the formal charges of the atoms of the following substances? a) KCN b) NaOH c) (CH3)4NF I have found 0 as the answer to all of them, but the answer of the book doesn’t match!! It is not a homework, just an exercise.

In this protein: gdp-mannose-3', 5' -epimerase (arabidopsis thaliana), there are five ligands: FORMIC ACID (FMT) GUANOSINE-5'-DIPHOSPHATE-BETA-L-GALACTOSE (GDC) GUANOSINE-5'-DIPHOSPHATE-ALPHA-D-MANNOSE (GDD) NICOTINAMIDE-ADENINE-DINUCLEOTIDE (NAD) 2-[BIS-(2-HYDROXY-ETHYL)-AMINO]-2-HYDROXYMETHYL-PROPANE-1,3-DIOL (BTB) Out of the five, what is the substrate/inhibitor-like ligand? Thank you for your help

Hello people, I have started to study biology and biochemistry by myself. In this moment, I am facing many many problems. I have this problem to solve (see attachment). Can someone tell me please the solution and explaining me the reason? Thank you in advance! Best, Andrea

Can someone help me get the most out of this question? Why is membrane called a lipid sea where proteinic icebergs are drowned?

Does anyone know how I can get F32? I know that F35= 50326,9

Can anybody tell me how I can use the method of joints here? I know force T (22900) and force Weng (24525). I also know that I should start in point 5 I can't figure out what my equilibrium equations should look like. Fx= 0 en Fy=0

I am working on some chemistry homework and I encountered a question that I am having a hard time with. "After the precipitate from the sodium carbonate and iron compound reaction was filtered and dried, the mass was 0.180 grams. Write balanced chemical reactions for the iron compound as Iron (III) and as Iron (II) with the sodium carbonate. What is the precipitate?" Basically 0.002 moles of sodium carbonate were added to a solution of water and some unknown iron compound. When the sodium carbonate was added a precipitate formed. Here is a link to the video of the reaction: https://drive.google.com/file/d/1Aq5POw2sTHozL2_yBOdVn2YnS8K2natP/view?usp=sharing …

according to the balanced equation what is the answer to the problem 2HCl + Ca(OH)2 --> CaCl2 + 2H2O How many mL of 4.7 M HCl are required to neutralize (react completely) with a 868.7 mL of 4.69 M Ca(OH)2? i need some help please explain your work

Hi, I am getting some problem with 'n'. Following is my code: import random class TestRandom: arr=[ ] def __init__(self, n): self.n = n def generate1000_5digit_RandomNum(self, n): for i in range(n): num = random.randint(10000, 99999) TestRandom.arr[i] = num for i in range(n): print(TestRandom.arr[i]) def main(self, n): self.generate1000_5digit_RandomNum(n) if __name__ == "__main__": objTestRandom = TestRandom(20) objTestRandom.main(20) I am getting following error: Somebody please guide me. Zulfi.

Hi there, Edit: I spotted the mistake already, although i have to go now and have no time to change it completely!!! Please don't waste your time on it! I am (still) working my way through a python book and a question came up but I am not 100% if the answer I produce is correct (and the book does not have an answer to this particular question). The question is as follows: Music shuffling. You set your music player to shuffle mode. It plays each of the m songs before repeating any. Compose a program to estimate the likelihood that you will not hear any sequential pair of songs (that is, song 3 does not follow song 2, song 10 does not follow song 9, an…

Hi, This is not a HW. Algorithm for prime number x 2<=I <= x -1, test whether x is divisable by i, Can we say that the running time is O(log^2 x) time, for large values of x can we say that the algorithm is a psedudo-polynimial time algorithm. From the internet, I found that the running time of algorithm to find prime number is O(sqrt(N)). I have 3 questions: Can we say that the running time is O(log^2N) for detection of Prime number? For large values of N, can we say that its a pseudo-polynomial algorithm? Is this true for Sorting algorithms also? Zulfi.

In 2002 the cost of a textbook was $120.00 and in 2013 it was $212.00. a. Assuming the cost of the textbook increases linearly as a function of time, give the function of the cost of the textbook since 2002. b. Give the interpretation of the slope of the function in part (a). c. A book is considered to be unaffordable when its price is more than $300.00. If the increase in price follows this linear trend, when will the book be unaffordable?

HI my name is Sarah im in chemistry 11. im kinda stuck what formula to use and how to get the volume. A gas occupies a volume of 250 mL at 100.0°C and 649 mmHg. What is the volume of the same gas at STP conditions?

HI my name is Sarah, im kinda stuck what formula to use and how to get the volume. A gas occupies a volume of 250 mL at 100.0°C and 649 mmHg. What is the volume of the same gas at STP conditions?

I know how to derive it with the steady state assumptions but I do not know how to approach this question without steady state assumptions (when formation and dissociation of [ES] intermediate is no longer equal to 0 anymore). I can do simple derivations but I’m not too strong in math so if anyone could guide me through, I’d very much appreciate the intellectual help. Thanks. equation: [E] + (k-1)<—>(k1) [ES] —>(k2) [E] + [P]

For my assignment I have to respond to my research question: How has the use of fertiliser in agriculture impacted on the loss of biodiversity in China's marine ecosystems over the past 20 years? I am having trouble finding resources to answer the question. Are there any sites you recommend? I can change the location and time frame in my research question to help get more evidence. The fertiliser is in relation to nitrogen fertiliser and the nitrogen cycle. For the analysis and interpretation, I was aiming on comparing the increase in algae blooms to the consumption / run off of nitrogen fertiliser through using tables and graphs. From there,…

Hello please could I get some help on the below question for an interview! Any useful links, help, blog posts, youtube videos or advice will be great. ‘Potential benefits of triaging evidence at the crime scene’ Consider what the impact of triaging potential body fluid evidence at the crime scene might be, rather than collecting evidence and processing it all back at the laboratory.

Hi my name is Sarah i'm in grade 11. I'm doing this assignment where you have to predict in a double displacement reaction is possible but i don't know how to tell. is there a kind of formula? is it to do if a solid becomes aqueous or vice versa. i asked my teacher but she was no help. Told me i should know this by now. 😔 here are some of my example questions. a) Cu(NO3)2 and Zn(NO3)2 b) AlCl3 and AlBr3 c) Cr2(SO4)3 and FeCl3 d) Ba(NO3)2 and AgCH3COO