A student is designing a device to project an image onto a wall. Which of the following would work to make the image? A) convex lens
B) plane lens
C) concave lens
D) all the above

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.

Which basic property determines a colored light's placement on the spectrum of visible light? a. speed b. frequency c. amplitude d. velocity

(a) calculate the activation energy, qv, for vacancy formation in silver, given that the equilibrium number of vacancies at 1073k is 3.6 x 1023 m-3. the atomic weight and density (at 1073k) of for silver are, respectively, 107.9 g/mol and 9.5 g/cm3.