help Definition and 21 Threads

Online help is topic-oriented, procedural or reference information delivered through computer software. It is a form of user assistance. The purpose of most online help is to assist in using a software application, web application or operating system. However, it can also present information on a broad range of subjects. Online help linked to the application's state (what the user is doing) is called Context-sensitive help.

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  1. Abivarman

    Help needed on mass-energy equivalence

    TL;DR Summary: problem help pls :( so i have a presentation competition on physics. and I chose the energy mass equivalency topic. while researching, I came across a video stating that if we compress a spring, it's energy increases, so it's mass also increases. same thing with a cup of coffee...
  2. Dani_318

    Physics Help for My Future Planning as a Physics Graduate

    Hello, I am an undergraduate physics student, and I would like some guidance on 'what to do' once I finish my degree. Any suggestions?
  3. lucashuizat777

    Ionic thruster high school science project

    I’m a junior in high school and I’m going to be entering the science fair. I want to do something impressive with a chance of progressing to the state level(CA). I want to try involving ionic thrusters but the i’m having trouble finding an actual hypothesis or independent variable to test. Can...
  4. P

    A New Adler book on GR: Why do these coefficients go to zero?

    This is page 73 of the book. As you can see, the mixed derivatives with the affine connections vanish in the second term. Why does that happen? This is used to prove that the connections are not a tensor, and i figured you could also reason it out even without making those terms vanish. OBS...
  5. keyzan

    Good people help good students!

    I would like to thank those who have helped me in recent months to understand something about theoretical physics. My 25th goes to you too. Thanks guys. I owe at least 5 points to you. :heart::heart::heart:
  6. I

    Need maximum weight on an extension machine

    TL;DR Summary: Need ideas on how to get maximum weight/resistance out of a pulley system in a centered axis extension machine Hi so I am studying mechanical engineering and am currently working on a factory that makes gym machines, and I wanted to know if anyone could explain to me how I could...
  7. brotherbobby

    How to use "quote" here in PF

    I can use the "Reply" option when I copy someone's text and it appears. However, when I choose the "Quote" option upon copying, maybe the text gets copied but nothing appears. Can someone tell me how to use the "Quote" option on here? Many thanks.
  8. L

    Ap physics 1 velocity center of mass question

    Idk
  9. T

    Spring Constant Force Problem Help

    I'm leaning towards the same, or maybe increase. I actually have no clue.
  10. User849483

    Can Physics Forums Help with Student Problems?

    Hello, I needed help with a physics problem and I found this forum. I hope someone can help me with my problem.
  11. hello478

    Help needed in this problem involving a spring and energy balances

    i do know how to do the working but i dont understand the concept stated above...
  12. Y

    Student who'll need Help. Often.

    Exactly what it says T-T
  13. TheePhysicsStudent

    Moments question help requested, unsure where I went wrong

    The Question What I did The Answer
  14. lauraB

    Medical Physicist needs an help!

    I was looking for some mcnp6.3 command instructions and I thought to tip my questions on internet. As my previous job taught to me, great people are always available on scientific forums for helping you! It's amazing!
  15. TheePhysicsStudent

    How Do You Solve Equilibrium Problems Using Moments?

    Question: My answer: The books answer:
  16. E

    Interesting question: design of a truck-based crane

  17. khrypchenkoa

    How Can a Complete Beginner Start Learning Physics?

    Hi. My story is weird and I need help. Brief backstory: I'm 21 and my brain is completely empty. As a kid, I didn't realize how interesting it was to do science and learn about anything, so I was weird. I'm the same way now. I can talk and talk endlessly about some unusual and difficult topic...
  18. Memo

    Help understanding this integral solution using trig substitution please

    Here's the answer: Could you explain the highlighted part for me? Thank you very much!
  19. E

    Where Can I Get Help with My Physics Homework?

    HI, I need help wtih my physics work and dont know where to ask
  20. J

    I How Is the Integral from (3-22) to (3-23) Calculated in Quantum Mechanics?

    I don't get the step from (3-22) to (3-23), can you how this integral was calculated? Thanks! Below there is a screenshoot of (3-9). Images are taken from "Intermediate Quantum Mechanics, 3rd Edition - Bethe, Jackiw".
  21. L

    How Do I Calculate Actual Frequency from Wind Turbine Simulation Data?

    hello all. Most the time im pretty good at analyizing data, but today i am struggling. So i need some extra help. I used a open source program called openFAST to generate this data. openFAST is a wind turbine simulation software. The graph below is of the a time series calculation from a...
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