Recent content by Bananas40

Homework Statement A mass is attached to a spring through which circulates an electric current. Will the mass move? Homework Equations F = I l \times B ? The Attempt at a Solution A spring is geometrically equivalent to a solenoid. Therefore, the current would generate a magnetic field...

Although 2H2O ==> 2H2 + 2O does not violate Lavoisier's law, oxigen is a diatomic molecule and therefore the substance 'O' that appears in that equation doesn't truly exist.

Did my equation work?

Oh, sorry, I misunderstood the first post. Try this equation for the acceleration: (g[-m1sin35°-m1cos35°μk+m2])/(m1+m2) It gives 2,58 m/s^2

I think (g(m1sen35º-m1cos35ºuk+m2))/(m1+m2) should do the trick.

You're right. Sorry for my poor English. Actually, that's exactly what I wrote in the exam: The wheels have different angular velocity and the same linear velocity. However, we asked our teacher after the exam and he replied with the complete opposite. I really hope I'll be able to convince...

So is it the same as the angular velocity? And what about the angular velocity? Is what I said true? In fact, I'm asking this because this question appeared in an exam I've taken today. According to my teacher, the angular velocity is the same for both wheels, but I (as well as a couple of my...

First of all, I very much thank you for reading this. I was asked the following: 'The wheels of a tractor have different radius. Is their angular velocity equal or different? And the linear velocity?' I thought that, due to the fact that the smaller wheels take less time to spin 2π rad tan the...