An ideal parallel-plate capacitor consists of a set of two parallel plates separated by a very small distance. the capacitor plates are charged to equal and opposite charges ±q and are disconnected from the battery used to charge them. at this point the capacitor is storing an unknown energy u. a point charge of mass m and the same charge as the positive plate (q) is brought against the center of the positively charged plate and released from rest. it accelerates towards the negative plate, striking it with velocity v. in terms of the given quantities (and fundamental constants) what was the energy u stored in the capacitor? a. 1 2 u mv  4 b. 1 2 u mv  2 c. 2 u mv  d. 1 u qv  2 e. u qv  f. none of the abov

What are segments of dna that code for a particular trait. a combination of dna and proteins make up what

Two horizontal plates with infinite length and width are separated by a distance h in the z direction. the bottom plate is moving at a velocity u. the incompressible fluid trapped between the plates is moving in the positive x-direction with the bottom plate. align gravity with positive z. assume that the flow is fully-developed and laminar. if the systems operates at steady state and the pressure gradient in x-direction can be ignored, do the following: 1. sketch your system 2. identify the coordinate system to be used. 3. show your coordinates and origin point on the sketch. list all your assumptions. 5. apply the continuity equation to your system. nts of navier stokes equations of choice to your system 7. solve the resulting differential equation to obtain the velocity profile within the system make sure to list your boundary conditions. check units of velocity 8. describe the velocity profile you obtain using engineering terminology. sketch that on the same sketch you provided in (1). 9. obtain the equation that describes the volumetric flow rate in the system. check the units.

Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.