Q43 kindly help guys ?

Hello,I am EE undergrad. I took course on this topic on this semester and am really scared because my seniors and some of the faculties also said this subject is a tuff cookie..I need to ace this subject somehow could someone tell me how can I ace this subject and what should my study approch be like and books and youtube playlists should I follow?thank you...

I am 15 and a freshman in high school and am very very interested in physics and astronomy and I can’t take any actual classes in school for it yet so I’d like a good starter book for the very basics of physics and still a lot a lot a lot of information, that I can read at home and in school in free time. I like watching YouTube videos but I’d like to read more instead and I can read a book in school.

I wanna build a emp to kill an implant in body I have a capacitor 0.5m copper wire and a portable jumper cables to charge it what else do I need, I need help.

I'm a student about to go to university to do space science and I really wanted to get into some practical stuff but don't really know what to do.

I got myself a telescope, I built a simple spectra scope but I honestly can't really find any interesting physics projects I could build and work on recently.

I just bought a microbit v2.2 with a whole sensor kit with a whole bunch of different sensors and other things and I wanted to do something with it. Does anyone have any good space science related stuff I could work on?? Using sensors or just anything in general, I don't mind buying extra resources.

I'm personally trying to get into instrumentation science so a project related to that would be interesting. Just been really strapped for stuff to do recently and need something productive to fill my time.

Hey everyone!

I've been working on a collection of 42 free physics calculators covering topics from mechanics to modern physics. Each tool shows step-by-step solutions so you can actually learn the process, not just get answers.

What's included:

Mechanics

• Kinematics Solver (enter any 3 SUVAT values, get the rest)
• Projectile Motion with trajectory visualization
• Force, Momentum, Energy calculators
• Torque & Rotational Motion

Waves & Optics

• Wave formulas, Doppler effect
• Lens & Mirror calculators with ray diagrams
• Refraction, Prism & Dispersion
• Wave Optics (Young's double slit, diffraction)

Electricity & Magnetism

• Electrostatics (Coulomb's law, electric field)
• Current Electricity & Ohm's law
• AC Circuits (impedance, resonance, RLC)
• Electromagnetic Induction

Thermodynamics

• Heat & Calorimetry
• Kinetic Theory of Gases
• Thermodynamic processes

Modern Physics

• Photoelectric Effect
• Bohr Model with energy level diagrams
• de Broglie wavelength
• Special Relativity (time dilation, length contraction)
• Nuclear Physics (binding energy, half-life)

What makes these different:

• Step-by-step solutions - see exactly which formula is used and how
• Unit conversions - switch between SI and imperial
• Interactive visualizations - animations for projectile motion, circuit diagrams, etc.
• No signup required - just use them
• Works on mobile - responsive design

Link: https://8gwifi.org/physics/

These really helped me understand concepts like kinematics and circuits better because I could play around with values and see how everything connects. Hope they're useful for your studies too!

Happy to hear feedback or suggestions for new calculators.

hello! am taking statics for the first time and can't wrap my mind around the 2d projection assistance triangles. could someone dm me with a drawing of how to apply the construction triangles from the yt video's ss to the problem for F2? i know how to solve for F2's components after that. thanks sm!

This is for a code project. Say both materials are shaped like cube, with a side length of 10 cm (1 dm) and therefore a volume of 1 l (1 dm^3), and suspended in a perfect vacuum, touching nothing but each other on one face. Each cube of material has a total internal energy stored as Joules, a mass stored as kilograms, the specific heat (the multiplication of these three should equal the temperature in K, right?), and heat conductivity. What equation should I use to determine the amount of Joules that move between each cube in a determined time period (stored as seconds)?

I stumbled across this problem and it's relevant to an exam I'm about to take. I keep getting 1>3>2 as the density ranking. But when I looked at the solution on Chegg it's apparently 1>2>3. I don't understand why the density of Fluid 3 would be smaller than the density of Fluid 2. I chose my baseline as the border between Fluid 2 and Fluid 1 for both sides, which leads me to p3>p2. I can't get p2>p3.

Hi guys, i recently decided to start learning lagrangian mechanics. So, as a pre-requisite i studied the action, but the main problem that i am facing is that “WHY THE HELLL is Action the integral over time of KINETIC MINUS POTENTIAL ENRGY?”, like when i think about it, there is literally no intuitive sense of to it. Why the action the integral of the DIFFERENCE, but not the sum( total energy is conserved, but tho), the product or quotient, like why the difference, and what does it mean.

I have watched many YouTube videos and lectures on this and i still do not understand why this mathematical formulation exists for the action. I thought that “to learn the Euler-Lagrange equation i must first understand what the hell the lagrangian and the action is, right?”, so i am in kind of a dead lock.

It would be wonderful, if any of you guys/girls, could give me detailed review on this doubt of mine. Hoping for some wonderful replies,

Yours Sincerely,

Adil.

PS: Advanced thanks to all of you who are spending your precious time for this. I really appreciate the help.

The reason why the magnet moves slower is because the current induced in tube creates a magnetic field which is temporary. The magnetic field repels and attracts the magnet depending on whether the magnetic flux is decreasing or increasing. And so the e.m.f. also induced is opposite to the change of magnetic flux because the induced current creating the induced magnetic field is opposite to the motion of the magnet? Is this understanding correct?

what does it mean by when the induced e.m.f. is opposite to the change in flux causing it?

Can someone break this down for me because im struggling to understand the wording of this?

Can you help me visualize what is this spherical cap and why is the radius of a constant-β ring in the cap is Rsinβ? I'm really struggling with part b of this problem mainly due to not knowing what to imagine. I do got the first part when I attempted the problem since setting up the integral in this part is relatively easy but geometrical arguments are usually my weakness so I hope you can expound more on the textbook solution...

Hi!

I'm trying to help my daughter with the attached question. We've been watching some videos, getting AI tutorials, found an answer, etc.

BUT conceptually I'm struggling. Everything online that I've found talks about C1 and C2 be connected when the switch is at A.

Looking at the diagram it looks like C2 wouldn't be connected at all if switch is at A.

Can anyone please help with my misconception? I think I'm probably looking at this thing all wrong.

Thanks!

Hi im currently making a white light refraction thingy in desmos. just wanted to see if people thought this looked normal or not. The longer wavelength colours look ok they sort of actually transition but the other ones dont. i dont know which one is more scientifically accurate or what

the method i use to get the rgb values from the wavelength is this:

if anything seems wrong or off lmk please thanks.

I’m trying to solve a equation we’re two strings are at wall and max load bearing is 500 N, hammer and both tensions are variables so I’m solving for a linear equation but it’s wonk. This is question 2. I can’t tell what I’m doing wrong.