14. A siren with a frequency fo = 2000 Hz is attached to a block. The siren and block together have a mass of 2.00 kg. The block is attached to a spring of unknown spring constant K. The spring is compressed an unknown distance and then released. The siren and block oscillate back and forth. A listener hears the source as emitting a varying frequency since the siren is moving. The highest frequency that the listener hears is 2060 Hz. The listener also determines that he hears this highest frequency repeat every 1.50 seconds. The speed of sound in air is 343 m/s. (a) How fast is the block moving when the listener hears the highest frequency? (b) Where in its motion is the block when the listener hears the highest frequency? (c) What is the lowest frequency that the listener would hear? (d) Where in its motion is the block when the listener hears the lowest frequency? (e) What is the period and angular frequency of the block? (f) What is the amplitude of the displacement of the block? (g) What is the spring constant of the spring? 00