As shown in the diagram, a steel wire is used to stretch a spring by applying an external force F. When the spring is stretched by 8.5 cm, the wire is wiggled and a standing wave with three anti-nodes (points of maximum oscillation) is set up. a) If the external force F is 20 N, the wire length is 32.0 cm, and the frequency is 65 Hz, what is the mass of the wire? b) What stretch of the spring (for the same frequency of oscillation of the wire) will produce a pattern with only two antinodes in the wire?

A heavy chain and a light string are each the same length, but the chain is more massive. When each is put under the same tension, the wave speed of the chain is___the wave speed of the string.

What is a vibrational frequency of the n=6 harmonic of a string of length 0.71 m strung at the tension 27.6 N, if the string is made of steel (density 7700 kg/m3) and has a diameter of 0.00771 m?

(a) An ethernet cable is 4 m long and has a mass of 0.25 kg. A transverse wave pulse is produced by plucking one end of the taut cable. The pulse makes 5 trips down and back along the cable in 0.5 s. What is the tension in the cable? (b) A simple pendulum consists of a ball of mass 3 kg hanging from a uniform string of mass 0.06 kg and length L. If the period of oscillation of the pendulum is 3 s, determine the speed of a transverse wave in the string when the pendulum hangs vertically. Group of answer choices   2) Light waves are electromagnetic waves that travel at 3.00  108 m/s. The eye is most sensitive to light having a wavelength of 5.84  10-7 m. (a) Find the frequency of this light wave. (b)Find its period.