Jump to content

Homework Help

For assistance with (but not answers to) homework problems.

Homework Help Rules

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.

  1. Started by Tudor101,

    I was given a scenario in which a woman is heterozygous for the deafness gene, her husband also being heterozygous. I was asked to complete a punnett square, in which I used D for the deafness gene and d for the hearing gene, and I got DD, Dd, Dd and dd, so from that I figured that there's a 75% chance of carrying the deafness gene, 25% of the child being deaf and 25% of the child being able to hear. Assuming the woman had another child, I was supposed to give the probability of her having two deaf children in a row, and I thought that would still be 25%, thought something tells me I am extremely wrong. Finally, I'm supposed to give the probability of the woman …

    • 0

      Reputation Points

    • 1 reply
    • 1.2k views
    • 1 follower
  2. Started by Mike Diamond,

    Can someone figure out this question, i got it wrong on my exam and want to make sure how to do it before the finals. Thanks The question is asking for the full IUPAC name, including the R and S designature for the following compound

    • 0

      Reputation Points

    • 5 replies
    • 1.4k views
    • 1 follower
  3. Started by FrankP,

    Hello so I am having an issue with rectifying the math for this problem. I have the answer that my teacher gave me which is the answer specific to my lab but on my own I can not prove the math to be correct. I actually cant even get a number at all my calculator is giving me a constant error. Background on the problem: Car attached to a string with a mass suspended on it passes through a photo-gate connected to a smart timer which reads the acceleration. These trials are performed on an incline ramp which has an unknown angle of incline. This is the problem we want to figure out besides tension and all that we want to determine what the angle of the incline …

    • 0

      Reputation Points

    • 2 replies
    • 1.6k views
  4. Started by Chu,

    Hello, I am working on a potentiometric titration lab for a diprotic phosphoric acid. Attached is the excel document of my lab. We are diluting 1.022 M NaOH by a factor of 5 and then using it to titrate with 25 ml 0.06M Phosphoric acid in a beaker. I know my titration curve is correct, however my TA told me that the scaling of my x-axis is wrong for my first and second derivative curves. I know that I need to use the average volume. I also know that I take must take the raw volumes and correct for the initial reading in order to find the average, but I am not exactly where I am going wrong. What I am doing is taking the second volume and adding it t…

    • 0

      Reputation Points

    • 0 replies
    • 1.8k views
    • 1 follower
  5. Kindly help me. I'm in gr10 and I have a test coming up soon, and I understand everything aside from the Coriolis. One thing I don't understand is how does Coriolis affect climate? I searched it up online, but can't find any simple, easy to understand answer. Second thing, how does Coriolis affect plants and animals? Kindly help me understand these concepts in a simple way. Thanks

    • 0

      Reputation Points

    • 3 replies
    • 1.2k views
  6. Started by anum,

    What is f(x) − f(x + 2) if f(x + 1) = x(x + 2)?

  7. Started by psyclones,

    I found a problem, I just like to check it. Question: From 8 total ingredients, (ham being one)- what's the probability of choosing a sandwich with ham? My solution: 27/28 = 128/256 = 1/2

    • 0

      Reputation Points

    • 3 replies
    • 1.3k views
    • 1 follower
  8. https://www.google.ie/imgres?imgurl=https%3A%2F%2Fi.stack.imgur.com%2FiGT6a.jpg&imgrefurl=https%3A%2F%2Fphysics.stackexchange.com%2Fquestions%2F3009%2Fhow-exactly-does-curved-space-time-describe-the-force-of-gravity&docid=FNB641e0gGK45M&tbnid=PbJ8EF-vi9eU2M%3A&vet=10ahUKEwjXuuC9t_LWAhVSaFAKHfP5CksQMwg2KBAwEA..i&w=600&h=458&hl=en&bih=769&biw=1600&q=earth curved space&ved=0ahUKEwjXuuC9t_LWAhVSaFAKHfP5CksQMwg2KBAwEA&iact=mrc&uact=8 These grid lines are shown as curved around the massive object that is the Earth. I appreciate that they are an attempt to show 4D and so this picture is non representative (very…

    • 0

      Reputation Points

    • 0 replies
    • 681 views
  9. Started by Emmabella,

    Hi everyone, So, I have this subject at University called Work and Organizational Psychology, and in order to be graded, I need to make a presentation about Micropolitics. Here comes the issues. Every time I search for the definition of micropolitics it shows as: The use of formal and informal power by individuals and groups to achieve their goals within organizations, as opposed to macropolitics. Which sounds very interesting indeed. The problem is when I take a look at some books to support my research, it seems to talk about something totally different. Now I am really confused, what should I talk about? What should I mention? Which definition does micro…

    • 0

      Reputation Points

    • 1 reply
    • 764 views
    • 1 follower
  10. Started by femz,

    Kindly help with the following questions 1. Suppose that we have to distribute n indistinguishable apples between k dis- tinguishable baskets. How many ways can we do that? Please explain your answer. Provide solution to the question assuming that there are more apples than baskets and no basket is empty. 2. Suppose a social network contains a number of people, each of whom has one of two “opinions” (e.g. a preference for Mac versus PC). Each person is connected with a set of “friends”, some of the other people in the network. You can choose any person in the network and let them see the opinions of their friends, and if most of the friends have the same opinion,…

    • 0

      Reputation Points

    • 6 replies
    • 2.7k views
  11. Started by Sylva,

    Hey, I've been stuck on this problem for quite some time: J = ∫0 ->4 ∫ sqrt(x) -> 2 (1 + y^2 * cos(x * sqrt(y))) dydx The cos (x * sqrt(y)) is the one causing trouble. I can't seem to find a way to integrate this. I even tried to turn it to polar coordinates but nothing seems to work. What am I doing wrong? Could someone point me in the right direction? Thanks in advance. PS: Sorry for my english, it's not my native language.

    • 0

      Reputation Points

    • 1 reply
    • 926 views
  12. Started by Sylva,

    Hey, I've been stuck on this problem for quite some time: J = ∫0 ->4 ∫ sqrt(x) -> 2 (1 + y^2 * cos(x * sqrt(y))) dydx The cos (x * sqrt(y)) is the one causing trouble. I can't seem to find a way to integrate this. I even tried to turn it to polar coordinates but nothing seems to work. What am I doing wrong? Could someone point me in the right direction? Another thing I don't understand with multiple integrals : How do you know if it represents a Volume? Thanks in advance. PS: Sorry for my english, it's not my native language.

  13. Started by anum,

    Hi, can somebody please help me with these two questions? 1)Suppose a social network contains a number of people, each of whom has one of two “opinions” (e.g. a preference for Mac versus PC). Each person is connected with a set of “friends”, some of the other people in the network. You can choose any person in the network and let them see the opinions of their friends, and if most of the friends have the same opinion, then the chosen person will change their opinion to the one shared by the majority of their friends. If there’s an equal split, you can choose their opinion. Assuming the network is connected, can we always find a sequence of people so as t…

  14. As a part of my thesis research, I need to mention what are the reasons that make it uneasy for humans to talk/think about sex. Why is the topic usually provoking stronger reactions (both positive and negative as well as personal and outer) than e.g. weather. I have found academic materials that state that sex reminds us of our corporeal animal nature and it provokes the fear of death, while we prefer to manage that terror by clinging to a symbolic cultural view of reality. But I don't think this is all. I can imagine there is some term that investigates the problematics of sex as a topic in human's mind. I tried to find something on google scholar, but I wasn't suc…

    • 0

      Reputation Points

    • 1 reply
    • 770 views
  15. Started by sonnenblume,

    Hey, I´m new in this forum and hope, someone can help me with a question from Biochemistry. " Isoelectric point of pepsin is about 2. Is this because of higher contents of: Glu , Lys , Asp , Asn , His. Underline correctly and explain" I have no idea unfortunately.

    • 0

      Reputation Points

    • 1 reply
    • 827 views
    • 1 follower
  16. Ok so so far I have not struggled with the elevator problems however, the one on the test I was a little off in my method and couldn't get the answer. The question is something like: An elevator has a cable with the max force of 16,000N, the mass of the elevator is 1200kg (a)what is the maximum mass of the passengers if the elevator is at rest (this part I got, I think)? (b) What is the max capacity if the elevator is moving at a constant v of 4m/s (c) what is the max capacity if the elevator is accelerating up at 1.4m/s^2? I got the same answer for (a) & (b) which was approximately 435kg for (c) I got something like .85 which I the…

    • 0

      Reputation Points

    • 6 replies
    • 1.8k views
  17. Hello, I had started a science fair project and bought all the needed materials to conduct the project. https://www.sciencebuddies.org/science-fair-projects/project-ideas/Phys_p028/physics/measuring-sugar-content-of-a-liquid-with-a-laser-pointer#summary However, i've been trying to think of something unique, a twist, to add to the experiment. Been brainstorming for a while now and I can't think of anything, any ideas? Thanks!

    • 0

      Reputation Points

    • 3 replies
    • 1.1k views
  18. Started by Chu,

    I need help filling in the values for [HCl] (M) - USED (for both parts) and [HCl} (M) - STOCK (for part 1) More specifically I need to know the equations and the inputs (like the area in the fx writing space) that would result in my average, standard deviation, and RSD % resulting in numbers that would match the blue boxes.

    • 0

      Reputation Points

    • 18 replies
    • 7.3k views
    • 2 followers
  19. Started by Rbannana,

    hi guys! silly question, but I need some clarification on the topic: for a cancer-based dissertation, do I need to come up with something that has never been done before? or can i just base my thesis on previous and similar articles? hope that makes sense. thank you

    • 0

      Reputation Points

    • 17 replies
    • 2.9k views
    • 4 followers
  20. Started by Okidi,

    Dear all, Currently am trying to build ultra light helicopter for crops dusting but due to financial status, I want to use sport motor cycle engine, 180KPH, engine weight is 55kgs. Please advise if this will work well or any one had the same experience.

    • 0

      Reputation Points

    • 2 replies
    • 1.3k views
    • 1 follower
  21. Hello, I would greatly appreciate if someone could look over my answers to see if there is something that is incorrect. This isn't homework my course is based entirely on exams. I just want to make sure I'm on the right track . Thank you in advance!!

    • 0

      Reputation Points

    • 1 reply
    • 834 views
    • 1 follower
  22. Started by Angad,

    Hi I need a little help How do you make ferric oxide from ferrous hydroxide? Thanks

  23. Hello! I have to find whether the N or the O are better at giving electrons to react in a lewis acid base. I think that since O is more electronegative it will not do a good job at giving up electrons because it wants more to fill its octet while N is less electronegative it will be better at giving its electrons to B in the BH3 molecule. Is there more to this? or would the N bond better to the BH3 than O in all for molecules?

    • 0

      Reputation Points

    • 3 replies
    • 1.4k views
    • 1 follower
  24. Started by muskan,

    what's exactly is time? did it started with the big bang or it existed even earlier? we measure time, but don't know what exactly it is.

  25. Started by The Almighty,

    Why twig and link matrices are separated in fundamental cut set matrix ? Are both matrices equivalent?

    • 0

      Reputation Points

    • 0 replies
    • 843 views

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.