3. (10%) At what characteristic length will the thermal and stress relaxation times be equal in soft biological tissue?
Posted: Mon May 02, 2022 9:04 pm
3. (10%) At what characteristic length will the thermal and stress relaxation times be equal in soft biological tissue? (thermal diffusivity is 0.13 mm²/s, speed of sound is 1500 m/s) 4. (30%) Design an experimental setup to measure PM2.5 concentration. Sketch the diagram, describe steps to measure and compute the results, show equations to estimate the measurement uncertainty, discuss how to improve the measurement accuracy.