Recent content by tifa8

Oh ok thanks. Now I can visualize the problem. Thank you I like serena and vela :)

the velocity will increase and change slightly direction i think. But even though there is not any horizontal component , right ? I really cannot see it...

sorry F=1.125.10-10

Homework Statement A raindrop carrying a charge of 25x10-12 coulombs falls at a velocity of 5 m/s between the poles of a permanent magnet. It passes through a 50 mm long region in which the magnetic field density of 0.9 T is directed horizontally. 1) determine the lorentz force of the...

thank you

Hello I need help for this problem, it has been 4 hours trying to do it Homework Statement Find the volume of the region of space above the xy-plane, inside the cone z=7−\sqrt{x^{2}+y^{2}} and inside the cylinder x^{2}+y^{2}=4x. Homework Equations The Attempt at a Solution I...

nobody ?

Hello, I need help for this problem on my calculus chapter curves and motion on curves Homework Statement a) for the spiral cornu defined by the parametric equations x=\intcos(pi*u^{2}/2)du and y=\int sin(pi*u^{2}/2)du obtain the length of the curve s(t) from 0 to t and hence reparametrize...

I think I found the answer for question 2. vector v=Su where u is a unit tangent vector since the speed S is constant, then S'=0 Or vector a= S'u+K(s)^2N where N is a unit normal vector and K is the curvature => a=K(s)^2N so a.v=K(s)^2N.Su=K(s)^3 N.u=0 since N.u=0 (perpendicular to each other)

Hi ! I have a intemediate calculus problem. I am seeing right now all about curves and motion curves. Homework Statement Show that 1. the path of a particle lies on a sphere if its displacement and velocity are always perpendicular 2.show that if the particle moves with constant speed then...

thank you ! I found t=3 which was correct :)

thank you ! No I didn't cover yet linear interpolation but I think we will see it next week. And no didn't see equations of lines in more than 3 dimensions. What I'm covering now is curves and motion in curves.

Hello, I need help for this problem Homework Statement There exist a curve C such that its parametric equation is (x,y,z)=(3−3t,1−t^{2},t+2t^{3}). There is a unique point P on the curve with the property that the tangent line at P passes through the point (−3,−2,2). Find the coordinates of...