Physics Definition and 985 Threads

15cos25 - 0.25N = ma.

First I calculated the volume of all of the logs... V = 13((pi)(.225)^2(g)) = 3.94 Then wanted the mass of the logs m = density(Volume) density = .6(997) m = 2356 Then calculated buoyant force... Fb = (997)(3.94)(9.8) = 3928 Then set this equal to weight of people and logs 38496 = ((number...

I was looking for videos, or post on how to do a physics home work problem. Ended up finding a similar post on this website. It didn't quite answer my question, but I thought I could post here to figure it out.

I am trying to calculate the size of coolant tank required to feed multiple grinding stations. I have a total of 12 taps all with flow rates of 20L per minute. All taps would operate at the same time. The tank would be open topped and 500mm tall. The tank also requires a dirty side and a...

Hello. I am joining this forum in hopes of expanding my physics knowledge and improving my accuracy in my current AP Physics Class. This class has been awful. I am normally top of my class, including AP Calculus BC, so I have a firm grasp of studying and mathematics. I am hoping to be a...

During my B.S./Physics I largely missed course # 3, which (back then) was entirely based on the Berkeley Physics Series, Volume 3 (Waves), by Dr. Crawford. I would *really* like to retake this course, using this book (even though it apparently is out of style nowadays). Unfortunately, Dr...

I am currently a junior (soon to be senior) undergraduate physics major and decided to join the physics forums because I have already gotten a good amount of help and understanding just by perusing past conversations without an account, and because I know that physics is not a subject easily...

Hi everyone I'm Justina. I'm excited in joining physics forums and I'm high school student who is interested in Quantum mechanics a lot .I used to spend lot of time on knowing Quantum mechanics and i learnt few little things. And this is my first time, joining an online community hope I will...

Hello, I am Derek. Physics has always interested me since childhood. How does the TV work? How the Ceiling Fan work? All these questions have always puzzled in my childhood. To seek these, I have wandered a lot which led me to the physics. Despite being a med student, the love for physics has...

I tend to love watching videos by a yt content creator called "Mentour Pilot" his videos debrief aviation accidents, explains lots of the physics involved and engineering. One of his recent videos had me thinking for a little while now and I would like everyone's opinions. This video is about...

Some time after my PhD I decided to study physics (again) on my own and with my own (maybe bit slow) pace. I do not work in the field, changed to IT but I kept physics as my hobby. The self study really brings me joy, can take it slow, rethink with no rush on terms, exams, etc. Currently, trying...

Fx = 0 = ABcos(a)+BCcos(b)-BDcos(30) Fy = 0 = ABsin(a)+BCsin(b)-BDsin(30) == Fx = 0 = ABcos(a) + 3.2737cos(b) - 3.738 Fy = 0 = ABsin(a) + 3.237sin(b) - 2.158 But i cant find a third equation to use. I've tried a+b = 90 but that produced a number of errors. Thank you. Edit: angle b is the...

I live in the SF Bay Area. I graduated in 2019 with a B.S. in Engineering Physics from UC Berkeley. My college experience began with me failing to actually sign up for orientation, and then contracting tonsillitis which lasted my entire first semester. The combination of these two things...

Hello, I graduated from UC Berkeley's College of Engineering with a degree in Engineering Physics in 2019. I performed extremely poorly academically, made no friends/connections, and have not been employed since then. I will be posting a more detailed post asking for some advice.

I’m a physics major in college looking to get into the nuclear energy field

I have been taught topics in high school circling around Newtonian mechanics and some basics of work and energy, waves, geometric optics, current and circuits and some poor electrostatics and unclear concepts of modern physics. I realize that I have significant weak areas in Physics and I aim...

I hope to have a nice time in the physics forum. I am interested in much about the laws of physics with respect to our daily lives and hope to achieve more and increase my knowledge in physics with the physics forum. Thank you for accepting my registration.

TL;DR Summary: A fluid on a vertically vibrating plate will, upon reaching a certain frequency and acceleration, produce standing waves on its surface. These are called Faraday waves, first described by Michael Faraday in 1831. Faraday waves are still an active area of research today, more than...

for 4kg box: Fx = T m1a=T (4) (2.50) = T 10 = T for 6 kg box: Fx = Fa - T m2a = m2a - T 15 = 15 - T 15-15 = T 0 = T I assumed the tension would be the same for both boxes, they are supposed to be, so what did I do wrong and is the answer 10 or zero?

I am interested in many subjects; history, physics, biology, art... well, just about everything. Why? Because the only truly useless knowledge is the knowledge you don't have. My interest in the sciences mainly derives from three sources: 1) my Dad's ongoing interest, as a layman, in sub-atomic...

I'm an ordinary college student who likes physics, engineering mathematics, and electromagnetism. I'm not sure because it's my first time participating in an overseas forum, not a domestic one, but I look forward to your kind cooperation.

Hi everyone! I stumbled across this forum looking for help on my first year physics homework about ~5 months ago and have been lurking ever since. I really appreciate the nature of these forums in that the answer to a problem is rarely (if ever) explicitly given, but instead people try to poke...

Hi, so this is a lab in which we used an air track at an angle and a glider to gather some data through various trials, ultimately to calculate "g". L_glider = 10.15 cm x (photogate activation point) = 547.5 mm or 54.75 cm x_0 (release point) = 1800.0 mm or 180.00 cm (Δx)_midpoint = | x - x_0 |...

How did you find PF?: Google search I encountered a problem in the equations for Einstein's Special Theory of Relativity back when I was in high school in 1964. With the invention of the internet, I tried to discuss this with scientists in sci.physics.relativity, but most of the responses...

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Am a graduate of Nairobi University in Bachelor of education science (Physics and Mathematics)

Hi all can't wait to learn more about physics.

Hello, I have a degree in chemistry but recently started with radiochemistry work and so I figured the best place to get myself up to speed with the physics related areas is this forum. I used it a lot on another account more than 10 years ago and have learned a lot.

Hello! I am a returning college student majoring in Physics in the material science track. I have an interest in nuclear/particle physics and love conversing with the scientific community.

Hi, I'm planning to embark on a minor research project on Space Weather with a Professor. As part of getting ready for the project, I've been tasked to study certain important aspects of Solar Physics & understand conceptual ideas. Can anybody recommend good books or even descriptive papers on...

I am an electrical engineer with a great passion for physics, and I live in Ottawa.

Hello, Looking for help with a physics problem. I am dealing with a problem regarding the flow discharge between 2 open water bodies connected by a concrete sluice with gates. The issue is that the channel is not straight but rather a trapezoid (image of the cross-section below). The discharge...

Hi, I'm Tafahhum, a high school student from Bangladesh. I find physics fun, because it explains every thing in this world. Physics works everywhere, from inside of an atom to the huge universe-everywhere. I enjoy learning about the answers of every 'why' that comes to my mind, and...

I am Shanjidah Tasfiah, a Postgraduate student of Physics at Khulna University, Bangladesh. Presently I am doing my thesis at the Secondary Standard Dosimetry Laboratory in Bangladesh Atomic Energy Commission as a Masters Program thesis student. I am working with different field sizes and...

In at the deep end. Retired, mostly from IT. Eventual Physics graduate (it's a journey). Not on good terms with mathematics.

Hi everyone, I'm a new here, this is my presentation https://www.physicsforums.com/threads/new-self-study-member.1061374/ I want to study physics for my own intrest and understanding of the universe. A few years ago, after high-school, I studied Halliday and Resnick quite thoroughly, both...

Hi my name is Giovanni, I'm from Italy and I'm 26 years old. I apologize for my english which might sound incorrect or weird sometimes :oldshy: I loved physics and astronomy since I was a child. My father is an astrophysics graduate, we used to have long conversations about the universe and...

STARTING IPHO. Hi guys, I am going to grade 10 this year and wanted to start physics olympiad preparation from basics. I dont know calc 1 too. Can you suggest me a good calculus book to get my hands on? Moreover, is it late to start my preparation? Thanks in advance.

My interest is on part (a), the steps are clear. I thought the final solution ought to be ##T- 500 =50 ×0.2## ##T=500+10 = 510N## Unless I am missing something here, same query on part (b).

My attempt: my answer was b correct answer is d

Hello I am MOHD HANZALA I worked on bell's inequality where we measure spin of electron along different basis leading to the bell's inequality . My question is that can we prove bell's inequality through proton or neutron or other particle??

Researchers find first experimental evidence for a graviton like particle in a quantum material https://phys.org/news/2024-03-experimental-evidence-graviton-particle-quantum.html A team of scientists from Columbia, Nanjing University, Princeton, and the University of Munster, writing in the...

"I'm excited to join this community and share my passion for physics. In this post, I'll provide a brief introduction to myself, my background in physics, and my areas of interest. I'll also include any relevant supporting material or experiences to enrich the discussion."

Hello everyone, I'd like to share with you my current situation and my desire to redeem myself after a year off track due to a lack of interest in physics. I am aware of my past mistakes, but now I am determined to recover and dedicate myself seriously to my studies. Last year, I struggled...

Amateur physics enthusiast. I watch a lot of physics explanation videos and one made me think of something. which would later become a paradox that i can't find any other examples of. So if that's the case I feel cool if I came up with one no one has considered before. That being said I know...

User New here but this conundrum is something that occurred to me as I was watching a physics video and I have run out of ways to ask about this. So here I am. Ok first principle. the setup. let's say we have invented a perfect telescope on earth. such that we can resolve any object no matter...

I'm just a physics lover

I've come here to ask any future questions I have regarding physics, mathematics or engineering. Thank you very much.

TL;DR Summary: In summary. I have BSc in Chemistry with honours and want to make research in more theoritical physics oriented field. I don't afraid the studies and the hours needed but I want opinions for the best possible option (MSc or 2nd BSc), in terms of usefulness for my PhD application...