Physics Homework Problem 1: In the linear quadratic model, what does a alpha, correspond to? Problem 2: What phase of the cell cycle is most radiosensitive? A. S B. M C. GO D. G1 Problem 3: Which dose scheme has a BED of 150Gy or greater for a tissue with an alpha beta ratio of 10? a. 30 Gy in 1 fraction b. 40 Gy in 2 fractions c. 50 Gx in 3 fractions d. 60 Gy in 4 fractions Problem 4: What syndrome is expected for a total body dose of SGy? Problem 5: What is the therapeutic ratio if normal tissue tolerance is 45Gy with an alpha beta ratio of 3 and the lethal tumor dose is 50Gy with an alpha beta ratio of 10