GROUP 6 Q6 Soccer Group . 3 questions Two spectators at a soccer game in Montjuic Stadium see and, a moment later, hear the ball being kicked on the playing field. The time delay for spectator A is 0.23 seconds, and for spectator B, it is 0.12 seconds. Sight lines from the two spectators to the player kicking the ball meet at an angle of 90 degrees. Note: speed of sound in room-temp air is 343 meters/second. QUESTION 6.1 How far is spectator A from the player? Choose one . 4 points O 13m 79m O 43m O 117mQUESTION 6.2 How far is spectator B from the player? Choose one - 3 points O17m QUESTION 6.3 How far are the Spectators from each other? Choose one - 3 points 0 48m 0 89m 0 124m 0 156m GROUP 7 Q7 Diagnostic ultrasound Group . 2 questions Diagnostic ultrasound of frequency 4.50 megahertz (4.5x106Hz) is used to examine tumors in soft tissue. QUESTION 7.1 What is the wavelength in air of such a sound wave? Choose one . 5 points O 76m O 4.5x10-5m 3.9x10-5m 7.62x10-5mV QUESTION 7.2 If the speed of sound in tissue is 1500 meters per second, what is the wavelength of this wave in tissue? Choose one . 5 points O 3.33 x10-4 m O 8.55x10-4 m 6,47x10-4 m 330mV QUESTION 8 Q8 An ambulance with a siren emitting a whine at 1600 hertz overtakes and passes a cyclist pedaling a bike at 2.44 meters per second. After being passed, the cyclist hears a frequency of 1590 hertz. How fast is the ambulance moving? Choose one . 10 points O 0.298m/s O 0.65m/s O 3.76m/s O 4.61m/sQUESTION 9 09 Light in a vacuum is incident on the surface ofa glass slab. In the vacuum, the beam makes an angle of 32.0 degrees with the normal to the surface, while in the glass, it makes an angle of 21.0 degrees with the normal. What is the index of refraction of the glass? Note: Use an index of refraction of 'I .0 for vacuum. Choose one ~10 points 0 0.65 O 11.0 0 1.48 I O 7.49