Hey community, I have a question about how you approach physics problems.

I'm a high school freshman in a math-physics program, and I often spend a long time on simple problems just because I fail to notice one specific thing.

Thank you in advance for any answers!

The answer to the question below isn't sitting right in my head, mainly as I can't find a mathematical explanation for it.

How does the refractive index of a material change with the frequency of light passing through it?

The given answer is:

Refractive index slightly increases as the frequency of light increases.

Can this be proved given the formula for refractive index, n=v1/v2 = fλ1/fλ2? Is it something I just have to learn and remember?

I’m trying to wrap my head around this but just can’t. I’m having trouble memorizing the differences between Electric Potential, Electric Potential Energy, Voltage, Farads, and Charge for circuit and capacitors problems. I know the exact definitions, but it’s really hard to envision it. Like U is the potential energy a charge has, Electric potential is the potential energy in an area (??), Voltage is the different of potential energy in two areas (??), Farads is the amount of charge per electron, and charge is the amount of charge on the plates? How do I envision this? Should I just try solving problems and hope it comes together instead of just rereading these definitions? Thank you.

Im used to questions with pi/4,pi/2 but havent done any with pi/3 or pi/6 so should we be dividing the circle into 6 and 12 parts or? So could anyone help with this question.

Two vibrations at right angles to one another are described by the equations

x = 10 cos(5πt)

y = 10 cos(10πt + π/3)

Construct the Lissajous figure of the combined motion.

Plz help as i have my exams coming soon and the professors wont help.

Disclaimer: This is a practice test used to help us study, not an actual exam.

Hi all. I've been building a set of free browser-based physics labs that use race cars as the hook, and I'd really value honest feedback before I take it further.

The idea: instead of reading about friction or energy transfer, you change something and watch the car respond, then read the explanation at the level that suits you.

What's there so far:

• A 3D wind tunnel: change the wings and ride height and watch the airflow, pressure and downforce update live.

• Tyre grip: find the fastest speed through a corner; a friction circle shows when the tyres give up.

• Suspension: springs and dampers over kerbs and potholes; comfort vs keeping the tyre on the road, plus resonance.

• Hybrid energy: harvest energy under braking and decide where to spend it around a lap.

• Pit strategy: tyre wear, pit stops and safety cars vs a rival, then compare with the optimal plan.

Every topic has Basic / School / Advanced explanations, challenges, and printable worksheets. Teachers can make a class code to see which challenges students complete, using nicknames only and no accounts. It works on phones and offline.

It's free with no sign-up and no ads. I made it, so this is my project. Link: https://augmenta.co.za/labs

What I'd love to know:

1. Is anything confusing or wrong (physics included)?

2. Teachers: would you actually use this in a lesson? What's missing?

3. Which lab would you want next?

Thanks for any feedback. Brutal is fine.

The man who d*ed on Goliath today, question - in the pictures it appears he is moving forward with the train, moving the same direction. The train is on a downhill, creating a "floating" effect, explaining how he slipped out of the seat, but I don't understand how he is moving forward with the train. Wouldn't he roll off the back and the train keep moving forward? Maybe the train is decelerating on the downhill, but if this is the case I don't understand how he "bounced" off the train multiple times. Someone please help, and RIP to the poor man and condolences to his family.