A string is fixed at both ends and is vibrating at 136 Hz, which is its third harmonic frequency. The linear density of the string is 5.50 x 10-3 kg/m, and it is under a tension of 2.9 N. Determine the length of the string.

Expectant parents are thrilled to hear their unborn baby's heartbeat, revealed by an ultrasonic motion detector. Suppose the fetus's ventricular wall moves in simple harmonic motion with amplitude 2.00 mm and frequency 124 beats per minute. The motion detector in contact with the mother's abdomen produces sound at precisely 2 MHz, which travels through tissue at 1.50 km/s. (a) Find the maximum linear speed of the heart wall. m/s(b) Find the maximum frequency at which sound arrives at the wall of the baby's heart. (Enter your answer to at least six significant figures.) Hz(c) Find the maximum frequency at which reflected sound is received by the motion detector. (By electronically "listening" for echoes at a frequency different from the broadcast frequency, the motion detector can produce beeps of audible sound in synchrony with the fetal heartbeat. Enter your answer to at least six significant figures.) Hz

One end of a horizontal string is attached to a small-amplitude mechanical 60.0-Hz oscillator. The string's mass per unit length is 3.9 × 10 4kg/m. The string passes over a pulley, a distance l = 1.50 m away, and weights are hung from this end. Assume the string at the oscillator is a node, which is nearly true. (Figure 1) Figure Oscillator -1.50 m- m 1 of 1 What mass m must be hung from this end of the string to produce one loop of a standing wave? Express your answer to two significant figures and include the appropriate units. m1 = Submit Part B m₂ = Submit Part C ☐ m5 = μÅ What mass m must be hung from this end of the string to produce two loops of a standing wave? Express your answer to two significant figures and include the appropriate units. µÅ Submit Value Request Answer Value Request Answer µÅ Units What mass m must be hung from this end of the string to produce five loops of a standing wave? Express your answer to two significant figures and include the appropriate units.…

f(1)- 40 sin +100 f() . Let in seconds. write the equation if the amplitude of f begins increasing by 2 feet per second, and the midline starts decreasing by 15% each second. be the basic sinusoidal function where fis in feet and t is