Aparallel plate capacitor without a dielectric is charged up so that it stores potential energy uo, and it is then disconnected so that its charge remains the same. a dielectric with constant k = 2 is then inserted between the plates. what is the new potential energy stored in the capacitor with the dielectric? a) 400 b) 200 c) u. d) 14u

We have a colorless transparent liquid. it looks like water. we seperated it into a solid and a liquid by evaporration and condention was this a chemichal or a physical seperation a. chemical seperation b. physical seperation

The ratio of lift to drag l/d for a wing or airfoil is an important aerodynamic parameter, indeed, it is a direct measure of the aerodynamic efficiency of the wing. if a wing is pitched through a range of angle of attack, l/d first increases, then goes through a maximum, and then decreases. consider an infinite wing with an naca 2412 airfoil. estimate the maximum value of l/d. assume that the reynolds number is 9x10^6.

Derive the formula 2as=v² -u² where the formula have have usual meanings