Which option is an example of a physical model? O A. A clay ball with a slice cut out, showing the layers of Earth
B. A graph of the relative thicknesses of Earth's layers
OC. A mental image of the solar system
O D. A computer weather map created by Doppler radar

Plot schematically the tensile stress versus strain curves for a typical thermoplastic material at a temperature below its glass transition temperature (tg and at a temperature above its tg, respectively. do the same for a typical thermosetting material. list in a table any differences or similarities between the two materials at t> tg and t < tg, respectively, and relate them to the structures of the two types of polymers