(NsBORNIK ZADA^ PO FIZIKE(B. (NdLQ (B8-10 (NKLASSOW SREDNEJ [KOLYs - (NdEMNOWI^ w(B. (Np(B., (NdEMNOWI^ l(B. (Np(B.s ((NmOSKWAs (NpROSWE]ENIEs, 1974)