Recent content by kbuild

I'm confused when i consider about this picture in my head. ... imagine that there is a ''closed-box'' on the floor. And ball A is in this closed-box. Pressure acted on the box = Patm. I'm wondering, how much pressure act on ball A ? With my sense, i think it is Patm. ... but i can't...

Drag force is quadratic with speed according to Fd=1/2*ρ*v^2*Cd*A (is'nt it the normal equation?) For my project, the tiny aquatic animal used in my project is 'euglena' which 80μm long. So their group is about 1,000 units/mm^2. In my opinion, it will complicate if i calculate every one...

Homework Statement Find work of drag force in term of proportional to Velocity (Like: Wd=kV^n ,when k=constant value n=Real number) Homework Equations (Fd=1/2*ρ*v^2*Cd*A) The Attempt at a Solution I've a problem with my science project. I try to find the terminal velocity of a...