Recent content by Chris18

That's a good solution indeed thanks a lot but still I am interested to see how my way will go on? If I have r^2( cos^2θ + sin^2θ) can I say that the () is zero or should I do something more? Thanks in advance

1. Find if the limit exist: sin (x^3 + y^3) / (x + y) (x,y)-> (0,0) So I am starting solving this by using polar coordinates form and I get to lim= sin r^3 ( cos^3θ + sin^3θ) / r ( cosθ + sinθ) = lim r^2 ( cos^2Θ + sin^2Θ) My question is ok so far and how...

Hey guys. I could use some explanation since I am new to FM: So my problem is the following one: Fluid flows with an average velocity 8 m/s in a pipe with diameter 3m. What is the volume flow rate? Now, I think the formula I got to use is Q= v.A Yet, I found my solution from a formula I found on...

Hello guys. In the picture below can u help me with the problems! I cannot understand what exactly should I comment about the strengths. I t would be easier if it was asking about the types of welding :) . Please give some help! Thanks in advance!

Ok so I must have 10^-7 ?

λ=nm and d= mm

350nm falls on a single slit of width of 0.20mm. What is the angular width of the central diffraction peak? I think that the width should be equal to 2Θ, where Θ=arcsin(m*λ/d)... m=1 and we have λ=350*10^-9 and d= 0.20*10^-6...but when i do the calculations I get 1.75 and the arcsin is a maths...

My idea is to use the equation of kinetic energy since the loss of energy must be equal to the initial kinetic energy of the truck according to law of conservation! Tell me if I am wrong pls! Best regards.

Well work is calculated by W=F*d*cos(θ). I know the basics of the work-energy theorem. Still I can't understand how to solve part (c) of the problem...

Homework Statement Hey guys. I have a problem to solve but I am stacked and I don't now how,so any help will be hghly appreciated.The problem is the following: A truck of mass 9000kg is moving with speed 18m/s, when the driver decides to stop and applies the brakes. After 6s the truck stops...

I am to the most of them... Still I don't know which one to use. Could you give me a hand here?

Homework Statement A body of mass 35kg moving with velocity Vox=40m/s is subjected to a constant Force of 55N acting in the same direction.How long does it take the speed to increase twice? Homework Equations I would be grateful if anyone could give me hand to solove it after i find the...