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- X - X e MasteringPhysics: Ch 15 HW - Google Chrome Secure | https://session.masteringphysics.com/myct/itemView?assignment ProblemID=93996427&offset;=next O Constants | Periodic Table Part A A 5.2 kg ball hangs from a steel wire 2.00 mm in diameter and 7.00 m long No Credit for Late Work What would be the speed of a wave in the steel wire? Express your answer using two significant figures. Grading Policy AZO ? 1 v= 43 Complete m/s Submit Previous Answers Request Answer * Incorrect; Try Again; 2 attempts remaining Provide Feedback Next > 8. Problem 15.37 O Type here to search OOH 9 | 56% A , 5:48 PM 4/9/2018 -Explanation / Answer
T = m g = 5.2 * 9.8 = 50.96 N
p = 7.85 * 103 kg/m3
A = pi * (1.00 * 10-3)2 = 3.14 * 10-6 m2
wave speed v = sqrt [T / p A]
= sqrt [50.96 / 7.85 * 103 * 3.14 * 10-6]
wave speed = 45.5 m/s
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