How deep is the well? 4. A cop car drives at 30 m/s towards a crime scene with its siren blaring at a frequency of 2000

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How Deep Is The Well 4 A Cop Car Drives At 30 M S Towards A Crime Scene With Its Siren Blaring At A Frequency Of 2000 1 (43.41 KiB) Viewed 30 times

How deep is the well? 4. A cop car drives at 30 m/s towards a crime scene with its siren blaring at a frequency of 2000 Hz. At what frequency do people hear the siren as it: (a) approaches the scene? (b) recedes from the scene? 5. If the density of sea water is 1024 kg/m³, what is the total pressure at a depth of 45 m in sea water? 6. At what temperature is the value on the Celsius scale 3.5 times that on the Fahrenheit scale? 7. How much heat is needed to convert 10 kg of water at 10°C to steam at 110°C? Specific heat capacity of water = 4.186 kJ/kg°C, Latent heat of vaporization of water = 2264 kJ/kg. 8. Four resistors with resistances: 1 , 2 , 3 , and 4 2 are connected in a circuit. What is the equivalent resistance when they are connected in: (a) series, (b) parallel ? 9. Light enters glass from air. If the angle of incidence of the light on to glass is 20° and the index of refraction of air and glass is 1 and 1.5, respectively, what is the angle of refraction of the light. 10. In the figure below, b = 23°, the refractive index of glass is 1.5, and of air is 1. What are angles: a, c, and d? Air Air a Glass AX a a