Answer:
22. The speed s = 330 meters per seconds
24. The speed s = 320 meters per seconds
Explanation:
* Lets explain how to solve the problem
- The equation s = 20√273 + T is used to estimate the speed of
sound in meter per second for each Celsius temperature T
- We will estimate square roots to the nearest tenth
* Lets solve the problem
22. T = 0° C
- Substitute the value of T in the equation by 0
∵ s = 20√273 + T
∴ s = 20√273 + 0
- The value of √273 is 16.5 to the nearest tenth
∴ s = 20(16.5) = 330 meters per seconds
∴ The speed s = 330 meters per seconds
24. T = -10° C
- Substitute the value of T in the equation by -10
∵ s = 20√273 + T
∴ s = 20√273 + (-10)
∴ s = 20(16.5) - 10 = 320 meters per seconds
∴ The speed s = 320 meters per seconds