... α,ΤρYvvΤμ)ΑYvv)((22212221 15. 14: Solving Eq. (15. 13) for the force ,F .2.43))m750.0()Hz0.40((m2.50kg120.0222fμμvF 15. 15: a) Neglecting the mass of the string, ... 23212221av)srad742()N3.28)(mkg1050.2()g( AωμFPW.39.0)m1030.2(23 15. 25: m15.0at mW250.02 rI W707)mW250.0()m0 .15( 44222 πIπrP 15. 82: a),cossinsincosSWWSωtkxωωAωt,kxkAtyxyand ... the rope issm6. 215) sm80.9)(kg0.22(2 and the speed is .sm9.92 (See Challenge Problem (15. 80) for the effects of varying tension on the time it takes to send signals.) 15. 27: a) The wave...