Recent content by vasya

can catalysis be explained through QM/QED?

I did learn chemistry in school. But not well. I know about VSEPR and it's limitations, but not sure how do I apply it to my tasks.... I know that chemistry is usually started with acids/salts/oxides/bases reactions. but this doesn't really help you to make anything. and theory behind it has too...

the thing I meant is the basics to start project based learning usually are not so complicated. And I know a lot about it's higher math. and I know a lot about how complicated computer science is. but project based learning approach starts after variables, loops, condition statements and...

I tried to study chemistry on my own for a while, and I came up with a question. You know, the whole point of learning new subject is to learn core principles, and then understand all their outcomes in things around us. And later to come up with new things based on this principles. Say when...

look more closely on first picture in this thread. thruster has offset of 0.25m of y-piersing-through-the-center-of-mass axis

it does. A rotary one. Moment of inertia*angular velocity

yes I am

ok. in this case angular momentum is calculated by that formula. according to it angular momentum is really conserved. thanks for your help and attention. So I have 2/3 of angular momentum in linear and 1/3 in rotary motion. Bot why exactly proportion is that?

offset from what?

conflict is that we have 10000 N burst lasting 0.01s on input, 100 kg*m/s of linear momentum and additional 1.5rad/sec of angular velocity on output. 1.5rad/sec*16.66= 25 units of angular momentum. 100 on input, 125 on output

so how to resolve it?

ahh I got it about angular momentum... And also I tried to simulate this problem in professional software. this is what I got: linear velocity 1 m/s angular velocity 1.5 rad/s it seems like it is a violation in conservation of energy. Am I missing something? Thanks for all of your responses...

It's too hard to comprehend.

i didn't get it... especially the part about a sliding box. if box is sliding, it's not rotating, so why do you speak about angular momentum?

>Question 1. After the impulse is delivered, what quantities related to the motion of the cube are conserved and why? mass. total energy. Also people mentioned conservation of linear and angular momentum. But i think that it is not the right approach to this problem, because burnt fuel cloud...