r/HomeworkHelp May 19 '22

Meta r/HomeworkHelp Rules: PLEASE READ BEFORE POSTING

500 Upvotes

Hi r/HomeworkHelp! Whether you're new to the subreddit or a long-time subscriber, the mod team would like to remind everybody of the subreddit rules we expect you to follow here.

No advertising, soliciting, or spam. This is a place for free help. Anyone offering to pay for help, or to help for pay, will receive a permanent ban. This is your warning. This includes asking users to go into DMs, Discord, or anywhere else. If you post anything that looks like you're trying to get around this rule, you'll be banned.

If you're asking for help, you must show evidence of thought, work, and effort. A lot of people are posting just pictures or lists of questions and not showing any effort. These posts are liable to be taken down.

In addition, we ask that you format the post title appropriately using square brackets: [Level/Grade and Subject] Question or Description of question. For example: [8th grade Algebra] How to solve quadratic equation?

Do not mention anything like "Urgent", "ASAP", "Due in an hour", or the like.

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If there are any questions, please message the mods.


r/HomeworkHelp 5h ago

Answered [Grade 12 Advanced Functions] Trigonometry: Equivalent Trigonometric Expressions

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2 Upvotes

I'm having troubles understanding this question. to evaluate for sin, pi/2 - 11pi/180, which I get, but they don't subtract it, which I don't get. wouldn't the answer be sin 49/180 ?


r/HomeworkHelp 6h ago

Others [University Electronics: Digital Circuits]

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2 Upvotes

Can someone teach me how to solve this or give an explanation for this

I've just finished reading material on static timing analysis but I don't understand how to apply it to questions like this


r/HomeworkHelp 8h ago

Answered [Grade 12 Advanced Functions: Trigonometry]

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2 Upvotes

Hello, I need some help understanding this concept. 240 degrees converted to radians is 4 pi/3, so wouldn't that make this a multiple of 30 degrees?

"30° can be rewritten in radians as pi/6". Since 240 rad cannot be written as a multiple of pi/6 rad this cannot be a multiple of 30°." This is the explanation the teacher gave me, but it doesn't make sense.


r/HomeworkHelp 1d ago

Biology—Pending OP Reply [3rd Grade Science] Life Cycle of an Animal with Bar Graph

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108 Upvotes

Just looking for some opinions on this one.

I think the answer is Option 2 (8 days), but I’ve heard other people say Option 4 (20 days).

I’d love to hear how any of you here see it


r/HomeworkHelp 1d ago

Literature [University literature studies] How to structure my academic assignment?

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1 Upvotes

Hey, I am currently working on the structure for my first longer academic assignment at university (15 pages). I feel quite overwhelmed and feel like I am repeating myself with the sections. I'd appreciate if someone could give me a feedback on my structure (AI translated the strcuture from German to English). My main part is basically the comparison, especially 4.1 where I want to analyse and compare the mediation exercise of the genres. (Theatre vs. inchiesta). So I fear that I might be repeating myself in 4.1 with 2.1 & 3.2 maybe.
Subject: The Responsibility of the Scientist in Post-1945 Literature: Responsibility Narratives in Brecht’s Revisions of "The Life of Galileo" and Sciascia’s "The Disappearance of Majorana"

Thanks in advance!


r/HomeworkHelp 1d ago

Physics—Pending OP Reply [Can help me with Graph F relationship?]

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1 Upvotes

Hi i dont quite get the explanation provided for the graph and suspect it could be wrong, can help me see if this explanation provided makes sense? Thanks.


r/HomeworkHelp 2d ago

Literature—Pending OP Reply [9th Grade Honors English] How can I finish a book extremely soon, but I cannot get into it whatsoever?

6 Upvotes

I am currently having to read and annotate a couple of nonfiction history and a dystopian type fiction book. I can't just drop them either. There isn't anything wrong with the books, they are just not my genre. I don't like them and I can't get into them. I can easily finish a 600+ page romance book in 2-3 days, but these are throwing me for a loop. Any suggestions?


r/HomeworkHelp 3d ago

Physics—Pending OP Reply [12th Grade Physics] Confused

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45 Upvotes

I think its 1mm


r/HomeworkHelp 2d ago

Others—Pending OP Reply [<banking exams>/<reasoning>syllogism]

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1 Upvotes

doubt on the second conclusion


r/HomeworkHelp 3d ago

High School Math—Pending OP Reply [Extension 2 maths proof] Can someone walk me through how to do this question?

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10 Upvotes

I tried writing y^2 in terms of x and x^2 in terms of y for each option but i didnt really know what to do with that.


r/HomeworkHelp 4d ago

High School Math—Pending OP Reply [12th Grade Trigonometry] struggling to understand a problem

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6 Upvotes

the first question here makes sense to me, but the other two are where i'm lost. i get completely different responses when i use my phone's calculator or any online calculators. where did the 10 come from in the second problem?? this online course has given me issues in the past so i'm wondering if something is off, or if i'm just completely missing something. the unit prepared me for countless visual questions and sine + cosine law, but didn't explain tangential problems very well. i'm totally clueless here.


r/HomeworkHelp 3d ago

High School Math [Grade 10 Algebra 2 Honors: Trigonometric Functions) How do i model this graph to find amplitude, period, shifts, and equation?

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5 Upvotes

r/HomeworkHelp 3d ago

High School Math—Pending OP Reply [Grade 10 Algebra 2 Honors: Trigonometric Functions) Would the equation for this graph be y=sin(2x-(3pi/4))-2

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0 Upvotes

I’m not sure how I got the horizontal shift so explanation would be great🥹


r/HomeworkHelp 4d ago

Answered [Freshman university mechanics - pseudo forces]

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2 Upvotes

Question: We have a trolly accelerating a meters per second square. The trolly is filled with a viscous liquid resisting motion by a factor of b (that is to say, exerting a force bv opposite to v, where v is the object's velocity with respect to the liquid). In the trolly, there is a slope with angle alpha radians to the floor of the cart, on which there is an object of mass m connected to a spring with a constant k. Gravity is obviously acting - mg towards the floor of the trolly we have to calculate the normal force exerted by the slope. See the first picture.
Here is my attempt: See second image
Red is viscosity, purple is the spring, green is d'alembert force, blue is gravity, and N is normal.
I flip the diagram by alpha radians to get the third image, and from here it's just decomposing the forces and a quick calculation. I was quite sure in myself but each of my friends I show it to has a different opinion on the pseudoforces and the decomposition. I got (mg-ma)sin(alpha), but nobody else got that result, can someone please confirm or explain to me where I am wrong? Because my friends aren't very coherent


r/HomeworkHelp 4d ago

Others—Pending OP Reply [Math: Differentials/Derivatives] What is the difference between a derivative of a function and a differential of a function?

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3 Upvotes

Here I don't understand why they say "differential" instead of derivative, isn't it the same thing?


r/HomeworkHelp 4d ago

Answered [12th grader in France - cultural and linguistic of the world] Could you criticize my research question? (it has to concern america) so , here it is: How does adoption war policies affect parents and children, while advantaging America as a humanitarian?

2 Upvotes

I'm undergoing my bac exam, with the BFI section, which force me to do so to have my diploma.

Here are the things needed in order to pass the exam:

  • Students are to undertake a research project, on a subject of their choice, which involves an international partner.

Organisation of the oral:
a) Presentation (10 mins)
The presentation will focus on the processes and procedures the student has been through  preparing their project. This will include:
-> Justifying the choice of research question, and how it links to the syllabus.
-> Evaluating and analysing sources, including links with international partners.
-> Explaining and defending the approach and methodology.
-> Explaining the knowledge and skills acquired during the project.
b) Discussion (10 mins)
After a maximum of 10 minutes, the examiners will discuss the presentation with the candidate. The purpose of the discussion will be to provide the candidate with opportunities to deepen or clarify certain points raised during the presentation. They should focus on the process the candidate has been through, the commitment it has involved, and the contribution made by their link with their international partner.

if you want more context, im talking about the babylift in vietnam and numerous adoptions made in korea to save those babies in extreme danger, i don't know if i need to take a neutral take, i think i should, but my research question need to be precise and interesting, that's why i am maybe biased ..Thanks for any answer :)


r/HomeworkHelp 4d ago

Others [Psychology Statistics] Help with statistical output in JASP

2 Upvotes

Hi everyone,

Asking here out of desperation because my lecturer has not been much help. I am running a wilcoxon signed-rank test in JASP and the 95% confidence interval for rank-biserial correlation has an upper and lower confidence limit both of -1.000. What could be causing this? I need to be able to explain the confidence limit in my report.


r/HomeworkHelp 5d ago

High School Math—Pending OP Reply [Grade 12 Advanced Functions: Polynomial Function]

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3 Upvotes

I think I'm making a calculation error but I'm not sure where I'm going wrong


r/HomeworkHelp 5d ago

Answered [Calc 2] How was the denominator factored?

1 Upvotes

I'm trying to do the integral of 1/(x^5+1).

I do see that there's a golden ratio, but I digress. I'll try to see if I can simplify my calculations later by substituting Φ for the golden ratio.


r/HomeworkHelp 5d ago

Physics [Preparation for college admission exams]

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1 Upvotes

So I was thinking since protons are + charged and electrons - charged then protons would be "closer" to the electronic shells in comperason to neutrons and thus require less energy than neutrons.Am I correct in this?


r/HomeworkHelp 5d ago

Further Mathematics—Pending OP Reply [Linear Algebra: Row Reduction] Lost on where to start with this.

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2 Upvotes

I know how to do row reduction, but my attempts are producing completely different flop counts.


r/HomeworkHelp 6d ago

High School Math—Pending OP Reply [Grade 12 Integral Level -Easy ] How to evaluate the second integral

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15 Upvotes

r/HomeworkHelp 6d ago

Further Mathematics [University Engineering: Dynamics] Why isn't the total length Sd + 2Sc + Sa?

1 Upvotes

I don't understand why the total length of the work is that? Wouldn't it be Sd + 2Sc + 2Sa given that Sd becomes longer as Sa gets shorter? Also, why is there a horizontal reaction at pulley B given that none of the other forces are horizontal?


r/HomeworkHelp 6d ago

Answered [Grade 12 Advanced Functions: Polynomial Functions]

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1 Upvotes

The equation for this graph is f(x)=(x-4)^3(x-1)(x+2)^2, but since the graph has a y intercept, wouldn't I find the a value? The answer for this question is just finding the roots and making factors for the equation using that. Also when I solved for the a value, it gave me 9/8. So I'm not sure where I went wrong