Recent content by alex77

Do you need to know thermodynamics to be a great plumber?How much thermodynamics do you need to know?All of it including the first and second principles of thermodynamics?I want to become one and I don't know how much physics is required to become one.Can you help me? Also are pV,pT and VT...

Locksmith as in a dumb,retarded person?

Can you understand physics if you are good in math and suck at proving something practical?I tried to do that and it only worked in hs.I have never realized that i need materials to do the trick.Do you need a lab to see what happens and than explain the phenomenum or you can apply math without...

Well i learned that the normal force is up and that weight is always down but this is because you have a 2d dimensional system with vectors,right?I mean in vectors you used to write the sums by adding the half diagonal of each side.Is this the same here because i don't see the relation between...

Well i do know that the normal force is always opposite to the force of weight.I also know that if that object is pushed you will gain velocity.Also the tension force which is pulled is opposite to the friction force and it is equal to the net force F. I guess in math the equation are like...

Sorry for the wrong letter.Here it is. In my country G is weight and that is why i noted like that.It won't happen again.

Is this ok?Have i written the forces in this 2d plane correctly?

Plus what i understanded from a vid is that if you push that square you will gain velocity.In horizontal plane pushing=force?And if you push that object where can you see the friction force?

That is the same case in the horisontal plane?The thing is i don't see any triangle in the horizontal plane.All i see is a square that is attached to a line.

Here is that picture with that R letter..

I don't have imagination and i couldn't figure it out how that body or object could move..If you push it you change the angle? What are these angles with sines and cosinus in these planes?If i have a wire and i want to tie that object to another object does that mean that the tension is equal to...

I also found something that looks like this What is this R?Is that the normal force?(1st pic) Also why do they change the direction of the angles from sine to cos and from cos to sine in the horisontal plane? Here is the picture (2nd pic) In the inclined plane the angles were different The 3rd pic

Uh this is not homework...This is something that could enlighten me for my baccalaureat exam...Definetly not homework... Ok i could give you some images as examples: I think that is enough

So i decided to choose my ib on physics but there is a small problem,i didn't understand why an object has a normal force and a weight.If that object is on a horisontal surface you can move that object?Is there a friction force on a horisontal plane?Where and what does it do?I know there was...

So in order to become an engineer you need math,physics and chemistry at a high level?