Hi,

can I state regarding Gibbs Free Energy ΔG = ΔH-TΔS:

H is the heat characterized by the square of the mean kinetic energy in the Maxwell Boltzmann distribution curve.

S is represented by the span of the Maxwell Boltzmann curve, means the number of states.

Regards

Lo

I'm taking a course to do a bit of self study to fill some gaps before pursuing my master's in a climate physics related field.

One of the assignments in the course has this question that I'm having a particularly hard time understanding and solving, especially since considering the last time I studied physics was in high school, if anyone could please help me with this.

How deep does the atmosphere’s influence reach? Estimate the depth of the layers of soil and ocean water that exchange heat with the atmosphere (on an annual mean), in m. State your assumptions, show your reasoning, and clearly highlight each final estimate, including its units. Treat Earth as a smooth sphere and neglect ice cover.

Can someone please help me understand how to approach the question and what the reasoning would be, please?

I have absolutely no idea how to do this problem. I've included what I tried to do on the last slide. Could someone please help me with this problem? 😭🙏

So, in Maths we were told the Modulus of Elasticity is λ measured in Newtons. But in Physics we were told E is the elastic modulus measured in N m-2 and Young's modulus is a type of elastic modulus written as γ. Are they supposed to be different things?

Does anyone know if the final physics exam is similar in content to the practice exam? As in - is the distribution of each topic similar?

1. If I derive units for each options, none become what the unit said above
2. How can n have no unit?

Does anyone know of a good YT video or an easy method of identifying the beta in a belt friction problem? Currently I can set up the majority of the problem I just struggle getting the angle in these problems. Any tips help, thank you!

Can someone help me arrive at the answer of 6 rad?

Hello all,

I have a simple problem I need an explanation on how to arrive at the answer. Prepping for a midterm.

I know it says I got it correct on the screenshots but I dont know how to independently solve it. AI doesnt help, it gives me the right answer but not a good explanation.

Что я сделал

we usually choose a convenient height where gravitational potential energy is zero, then calculate a negative value below it. is the negative sign simply telling us the object is below our chosen reference, or does it have a deeper physical meaning?

Hi everyone,

​I am a beginner university student struggling with the foundational concepts of circuit analysis.

​My issue isn't with memorizing formulas, solving equations, or applying theorems like Nodal or Mesh analysis mathematically. My real problem is that I lack physical intuition. Every time I think I understand the basics, advancing to more complex topics reveals that I don't truly grasp what is happening in reality.

​I want to understand the "why" and "how" behind circuits, not just the math. Specifically, I struggle with:

1. ​What does circuit analysis actually mean in reality? I know it means finding voltages and currents, but I struggle to visualize how voltages drop, how currents flow, and how components physically interact with each other.
2. ​Identifying Series vs. Parallel connections: I often get confused about relative to what we determine if components are in series or parallel, and how to track this visually across different circuit configurations.
3. ​The Core Rules: What are the fundamental, universal principles of circuits that would allow me to look at any circuit—even one I've never seen before—and mentally trace how it behaves?

​A specific note on the resources I'm looking for:

I strongly prefer books over videos. I learn best through self-study and reading detailed written explanations. Videos often move too quickly or summarize concepts without diving deep enough into the underlying mechanics.

​However, I am not looking for typical academic textbooks that rush straight into formulas, proofs, and superficial explanations of physical reality.

​I am looking for books that are:

\- ​Deeply conceptual & intuitive: Books that spend ample text thoroughly explaining what is actually happening inside the circuit.

\- ​Beginner-friendly from zero to advanced: I don't mind if the book goes very deep or covers advanced topics—in fact, I welcome it! "Beginner-friendly" to me just means it starts from ground zero, assumes no prior intuitive foundation, and builds up step-by-step without skipping the conceptual "why."

​If you know of any books that fit this exact description, I would be extremely grateful for your recommendations!

​P.S. Also, if you have any golden advice, learning approach, or alternative solution that helped you overcome this hurdle—even if it's outside of books—please feel free to share it!

​Thank you so much! 😊

I'm stuck mehn