Recent content by ptar

Homework Statement Here's the question, verbatim; We want to build a pressure using a block of elastic material, where the pressure applied to the top surface is measured by a strain gauge mounted on one of the side walls of the block. The gauge factor of the strain gauge is 2.5. When 1 mm Hg...

Homework Statement The question is; The interaction energy between Na+ and Cl- ions in a NaCl crystal can be written as: E(r)= -A/r + (B/r^8) where A = 4.03 x 10^-28 J.m and B = 6.97×10^-96 J.m^8. The energy is given in Joules per ion pair. (a) Calculate the binding energy (E0) and...

Basic efficiency question... Basically, the question says that efficiency of a power plant is 62%, and that the plant produces 1 GW of electricity. Now, would this mean that the total energy produced by the plant is 1/0.62 G Joules/ second? Or would the 1 GW figure be the total energy produced...