A. [15 pts] The water. level in a 1.0 m vertical tube can be adjusted to any position. A tuning fork vibrating at 432 Hz is held just over the top of the tube. The air inside the tube is at 10 C. What is the least water height, measured from the bottom of the tube, for resonance to occur in the tube above the water? [Answer in 2 significant figures] B. [10 pts] An ambulance is approaching a vehicle from behind. Its siren emits sound at a frequency of 700 Hz. If the driver of the vehicle heard the frequency of the siren to be 705 Hz. What is the speed of the ambulance if the vehicle is moving at 56 km/h? Take the air temperature at 27 .C. [Answer in 3 significant figures] Vambulance V car