Recent content by Litcyb

Homework Statement Question is attached Homework Equations σ(x) = 0 σ(y)= P/A t(xy)= Tc/j The Attempt at a Solution I know how to do the stress transformation, but my only issue is noticing why σ(x)= 0, I can't see it, can someone help me.

Homework Statement As an electron moves from a high potential to a low potential, its electric potential energy? a) increases b) remains the same c) decreases Homework Equations we know that V=U q0 the electric potential = potential energy times the charge. The...

Homework Statement An opening in a floor is covered by a 1×1.2-m sheet of plywood of mass 18 kg. The sheet is hinged at A and B and is maintained in a position slightly above the floor by a small block C. Determine the vertical component of the reaction (a) at A, (b) at B, (c) at C.Homework...

I got it and yes, there's no need why to have count there!

thank you~~~!

I did write the whole code and declared all my variables. i just didnt want to post it fully here for some reason or the other. I apologize. here is the whole code. #include<iostream> using namespace std; int main() { int count; int num; int x; count=1...

C++-- while-loop Homework Statement calculate the 3 largest number of a sequence Homework Equations you ask the user to input a sequence of numbers, and enter the value 0 to stop entering numbers. c++ The Attempt at a Solution i managed to calculate the the maximum of the series of...

omg! i knowwwwwwwwwwwwwwwwww! i did it. that was so stupid of me. thank you.

Homework Statement integrate 2t^(2)/(1+t^2)^(2) Homework Equations trig sub 1+tan^2(x)= sec^2(x) The Attempt at a Solution the attempted solution is attached.

Well guys! thank you either way!

And since there are no external forces acting on it, then momentum is conserved. so, we have to finish with what we started. if there was a external forces, such as in a rocket thrust problem, then we will have to involve impulse, in order to calculate the the Vf of the rocket, right?

@Rude man, I am confused. so in general, M(total) *V(initial)= M(train)*V(final train) + m(of sand)* velocity( throughout the 30 mins) which gives me vf=20m/s. which is sort of weird, since is the same velocity we started with. Is it okay to think of it this way; that in order to have...

It is an example question from old quizzes. why? the problem doesn't make sense? can someone help me? so would it be (100,000)(20)= (85,000)(vf) +(15,000)(20)? because the sand that is falling out, has the same speed of the cart throughout the 30 mins

Homework Statement Im not sure if I did this problem correctly, can someone please reassure me?!Homework Equations Conservation of Linear momentum pf=pi m1v1=m2v2 The Attempt at a Solution M(initial)=100,000 kg M(final)= 100,000kg-15,000kg= 85,000kg V(initial)=20.0m/s V(final)=...

Homework Statement I am just confused about Angular momentum. Homework EquationsKE(rotational)= 1/2Iw^2 Angular momentum= Iw The Attempt at a Solution Why can I do the change in KE rotational to calculate the her final angular velocity in 3 revs? very confused! :( both equations relate to...