Hello! I just started the most basic physics class where we go over a lot of formulas in a very short amount of time, I’m struggling a lot in this class because I’m a person that needs some time to actually learn something. So I’m asking you guys for advice, what is the easiest way to understand when and how to use formulas? I’ll put a picture up of the formulas we are supposed to use
Усім привіт. Нарешті опублікував у Steam свій комплекс по фізиці, тож усіх прошу подивитись та добавити активності (додати у вішліст, тощо). Це проєкт, котрий коріннями уходить в далекий 2004 рік. Зараз по суті я реалізував його другу версію, в якій є 120 фізичних інтерактивних модулей. Сподіваюсь вам буде цікаво, а якщо вирішите підтримати грошима - лише для українського регіону у стимі велика знижка.
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Hello,
I'm 17,studying science,
Today our professor started a new topic light. He told that light rays travel in form of waves and that evry point through which the rays are passing becomes a new propogation point and propgates light in all
directions.
For which he gave an example-
In a completely dark room if a small hole is made in the door and a candle is kept at some distance in an inappropriate angle that it cant ve seen through the hole,
after certain time we can observe and identify things at some extent in the room as the light waves from the candle enter and propgate within the room.
I m able to justify mysleft how evry point becomes a propogation point, but it brought another quetion,
If evry point starts propgating light in all directions then, the points in the path of the propgated light must do the same and the points in that path... and so on..
And intensity of light should go on decreasing and there should be a point after which it should be insignificant
As their is no energy source. So is it that even light cant travel infinite distance,it is infinite for us humans, but beyond a point even light cant travel.
It may be completely rubbish 😭😭
Pl correct and explain me.
https://reddit.com/link/1psynrp/video/lyz8kdipy3th1/player
Link to website:
https://rotemtsafrir.github.io/dipole_sim/
You can:
Best to use with a computer but sorta works for mobiles too.
Made with javascript and processing.
Hi, I’m a first year student in physics and I’m having a hard time doing excersizes and solving problems. My problem is really that I can understand the concepts from class well enough and remember formulas and what not, but I can never seem to understand how to solve anything or apply my knowledge to tasks I’m given. It seems like all my classmate are able to just immediately start doing excersizes but I’m stuck not knowing where to start. I’m wondering if anybody has any tips or have been through the same as me. Any replies are appreciated)
The thing is that I am confused about that the ball with mass m will eventually meet point B that is for sure but what if instead of staying on the curved surface, the ball projectiles with point of projection being point A. Then according to energy conservation does it still land on B or something else happens. And btw, what is the parameter to decide whether the ball will stick to the surface or will show projectile motion?
The biggest difference, in my view, is not simply that F=ma contains “harder physics.”
It demands a different level of problem recognition.
In many standard physics problems, the structure is already visible: identify the relevant equation, substitute the information, and solve.
A strong F=ma problem often asks a different question:
Can you recognize the hidden structure before doing the algebra?
For example, when you see two objects accelerating under gravity, do you immediately think about relative acceleration?
When you see a wedge moving on a frictionless surface, do you recognize horizontal momentum conservation before writing Newton's laws for every object?
When a circular-motion problem asks for a minimum condition, do you immediately look for the limiting case where the normal force or tension becomes zero?
This is why simply doing more textbook problems is not always enough.
For F=ma preparation, I recommend developing three separate skills:
A useful exercise is to take an F=ma problem and, before doing any calculation, give yourself 30 seconds to answer:
“What is the central idea of this problem?”
That habit can change the way you solve competition physics.