Homework Help
For assistance with (but not answers to) homework problems.
A simple reminder to all: this is the "Homework Help" forum, not the "Homework Answers" forum. We will not do your work for you, only point you in the right direction. Posts that do give the answers may be removed.
5178 topics in this forum
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Hi, why the probability is not calculated using same function complex conjugate Like in the equation at the bottom of this paper?
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- 0 replies
- 803 views
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Let f(w) = 2w^3 - 5. What is f(4)? Let f(w) = 2w^3 - 5. Let z = 2. What is f(z)? Let g(x) = cos(x/2) - 3x. Let f(x) = 2x + 5. What is g(f(x))? Let f(x) = tan(x) - 2/x. Let g(x) = x^2 + 8. What is f(x)*g(y)? What is the derivative of x^2 - x + 3 at the point x = 5? What is the value of x where x^2 - x + 3 is a minimum? In Python, what is returned when evaluating [n for n in range(10) if n % 2]? In Python, what kind of error is returned by the following code? (e.g. NameError, ValueError, IOError, etc.) def my_func(n1, n2): return n1 + n2 my_func(1, 2, 3) What is returned by datetime(1970, 1, 1).strftime('%Y-%d-%B') in Python?
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- 2 replies
- 6.9k views
- 2 followers
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Guys can someone put me in right direction? I don't understand this task. Help pls.
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- 3 replies
- 1.4k views
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Consider a turbine which actuates the windmills by blowing air into it. (If we use beat steady windmills (which is called reverse windmills) instead of movable windmills, deliberate the following conditions by parametric view. (Ignore the friction power (force)) A. Compare moving speed of air molecules in the following conditions: 1. There are reversed steady windmills between movable windmills. 2. There are movable reversed windmills in the middle of movable windmills which are actuated by wind power (energy).
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- 2 replies
- 795 views
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I could not solve by softwares. Can you help me?
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- 0 replies
- 772 views
- 1 follower
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I have an assignment to record a model that I have to create and explain the tectonic supercycle step by step, any model suggestions? Thanks
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- 1 reply
- 744 views
- 1 follower
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So, basically I am extremely confused by some of my chemistry homework. The question is: "hypothetically, you have an unknown solution that contains either dissolved NaCl or dissolved NaNO3. You add AgNO3 to the unknown solution and observe that a precipitate forms. Identify the unknown solution and explain your choice (use the solubility rules)." I'm confused because wouldn't both NaCl + AgNO3 and NaNO3 + AgNO3 create a precipitate? Couldn't the unknown solution technically be both options? I'm so confused.
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- 2 replies
- 875 views
- 1 follower
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I am looking for information on the plastic crisis and the oceans. Can anyone point me in the direction of a place with reputable sources? I feel as though Google Scholar hasn't served me well in the past. Also does anyone know anything about the impacts that cruise ships have on the ocean? Thank you.
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- 4 replies
- 1.1k views
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SO, just in general, I'm having difficulty telling the difference between chromosomes, chromatids, sister chromatids, Homologous pairs, n and 2n. But I would really appreciate it if someone could explain how to get the answer for the question below. My initial thought was that there would still be 20... but the back of the book said that was wrong. It was a MC with none of the above as the answer so I was thoroughly confused. If a diploid cell with 20 homologous pairs completed meiosis and cytokinesis, each cell formed would contain _____ homologous pairs. Oh I was thinking of mitosis, whoops, would the answer be 0? I got that from looking at an example problem…
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- 3 replies
- 6.7k views
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How many unique DNA and RNA nucleotides are found in Nature - My initial thought was 5; Cytosine, Thymine, Adenine, Uracil, and Guanine. But the key says I'm wrong, I'm hoping this is a typo?
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- 3 replies
- 1.4k views
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Just recently took a quiz and one of the problems that got to me was this The following are involved in reactions that produce halides from secondary alcohol substrates , EXCEPT: pyridine PBr3 SOCl2 HBr I got the problem wrong but was wondering what is the true answer.......
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- 2 replies
- 740 views
- 1 follower
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ill cut to the chase. how many watts can 50,000 rpm if hooked to a dynamo or a motor/generator?? what is the cheapest electricity frequency changer I can buy why do I need an amplifier when doing coil stuff in a coil, where do I plug in the 2 ends of the coil, my uncle said its line 1 and line 2. is it equivalent to positive and negative sides of a battery???
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- 7 replies
- 1k views
- 1 follower
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ive been tasked to make a short essay and your comments are necessary, 5 comments atleast. Please don't complain about my essay since im not really good at this, just comment about your thaughts on the subject, and pls no negative comments. comment, or reaction will do. Inquiry Based Learning Inquisitive based learning is a way of obtaining information by asking various questions about the things you are curious about. Inquisitive learning is an excellent way to learn as it motivates curiosity which leads to more questions. Inquisitive learning also elevates thinking from low-order to higher-order thinking which benefits us as time goes on beca…
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- 3 replies
- 770 views
- 2 followers
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Ok so here recently I’ve been experiencing like a slight numbness but more of a tingling type feeling in my arms and legs. I’m only 20 6’6 200 lb’s exercise every now and then pretty fit. Not diabetic or anything like that pretty healthy..so far. Now I did try to look up the symptoms and the closest thing I could find that matched it was anxiety,the only thing that didn’t match there was Nasuea. It’s been going on for a few days now and I’m starting to get very worried it could be something serious. Could anyone help and give me some type of reasoning why it’s continuing?
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- 3 replies
- 1.1k views
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I was given an assignment where I have to look at a picture of a cell and identify the parts selected. I am only missing one part unidentified and I can't research it online. All the parts that need to be identified have letters associated with it. I can't find what part "F" is.
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- 1.4k views
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I currently have a question sheet of biochemical statistics that I'm trying to work through. I would very much love any hints or examples of what to do for this question. I really don't know what to do, or where to begin! The reduction of a ferredoxin with ditionite (under anaerobic conditions), gave the spectra 'a' to 'h' as shown in the figure below: http://yfrog.com/0yimg28880j Spectrum 'a' represents a fully oxidised state and 'h' shows a fully reduced state. Spectra b-g represent partially and increasingly reduced ferredoxin. The volume was constant throughout the experiment and the changes in absorbance at 460 nm were linear with regard to the state …
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I tried to solve this differential equation by converting into an exact differential equation.So I converted into an exact differential equation but couldn't reach the end.so help please.
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- 1 reply
- 1.1k views
- 1 follower
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The problem statement and diagram is attached. Write a MATLAB code for the mechanism that uses phi at the independent variable and solve for the following parameters when phi=30°, 150°, 260°, and 310°. a. Angular velocity of link 3b. Angular acceleration of link 3c. Linear velocity of point Ed. Linear acceleration of point Ee. Motor torque with external force, FeI don't necessarily need the MATLAB code, as I can figure that out. My trouble lies within figuring out the Kinematic Equations. Would I need to figure out a system of equations (ex. 5 equations, 5 unknowns) or could they all be solved for independently? I'm pretty sure that the 'syms' function in…
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- 1k views
- 2 followers
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Dear May I know how to solve the cryptography with Matlab programming language as below - (1) Implement Elgamal Method (2) Implement Elliptic Curve Cryptography method (3) Implement RSA Method (4) Implement Rabin Method Find (a) Prime test (b) Inverse function Please help me by provide your advice and suggestion so that I can improve my computing skills (please see the attached file) Prayerfully Tron Orino Yeong tcynotebook@yahoo.com 0916643858 Matlab Programming Language Cryptography.doc
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- 0 replies
- 962 views
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Hey there, I'm doing a small project about the element lead, and I am supposed to write some stuff about the ion charges and I realized that there was two different charges. One that says +2 and then just below it, +4. I'm wondering what that actually means, and if I was going to write it down, should I write a +6, or just +2 and a +4 underneath it. Thanks, I would really appreciate a simple answer, please very simple, since I have to finish the whole project by Monday. I have also spent about twenty five minutes researching and nothing comes up. I already know what the ion charges are and stuff, but I just don't know what the second number is for example: lithium has a c…
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- 5 replies
- 922 views
- 1 follower
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Hi everyone! I have some trouble figuring out the following question: If oxygen, nitrogen and ozone did not absorb UV radiation, what would you expect the temperature profile in the atmosphere to look like between the surface and top of the atmosphere? Specify the temperatures at Tropopause, Stratopause and Mesopause. My guess would be that the surface would become hotter, however, I am not sure about the rest... I would appreciate any help!
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- 918 views
- 1 follower
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Hello How will the pH of a solution change when a base is added to an acidic environment, neutral or very basic ? It seems to me that both answers can be correct, right? Thank you
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- 6 replies
- 944 views
- 2 followers
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Find the measured value and the deviation if the mean is 36,92; standard deviation is 0,19 and the ordinate (f(x)) of the normal distribution of the standard deviation is 1,9226.
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- 644 views
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Find an expanded uncertainty assuming t-distribution, for the fourteen independent observation were: 6,45; 6,62;6,47;6,57; 6,62; 6,50; 6,55; 6,43; 6,58; 6,49; 6,60; 6,50; 6,56; 6,48
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- 692 views
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