A horizontal, cylindrical iron wire is attached to a spring on one end and to a wall on the other end. The spring constant is 200 N/m and the spring is stretched an amount 20 cm. The wire is then quickly pulled up at one end and released, producing a pulse that travels the length of the wire. The radius of the wire is 1 mm, the length of the wire is 18 m, the density is 7.874 kg/m³ and Young's Modulus is 2E11 Pa. Calculate the speed of a pulse travelling along the wire. Number m/s

A horizontal, cylindrical iron wire is attached to a spring on one end and to a wall on the other end. The spring constant is 200 N/m and the spring is stretched an amount 20 cm. The wire is then quickly pulled up at one end and released, producing a pulse that travels the length of the wire. The radius of the wire is 1 mm, the length of the wire is 18 m, the density is 7.874 kg/m³ and Young's Modulus is 2E11 Pa. Calculate the speed of a pulse travelling along the wire. Number m/s