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3. What is the intensity level in decibels for an intensitysound wave of (a) 10-10 W / m2 and (b) 10-2 W / m2?
4. While an ambulance is traveling east on a highway at a speedof 33.5m / s (75mph), its siren emits sound at a frequency of400Hz. How often will a person traveling in the car ride west at24.6m / s (55mph) (a) while the car approaches the ambulance and(b) while the car moves away from the ambulance?
