Question

Need help on 47 need explanation too plz help

Answer 1

350 m/s

Step-by-step explanation:

v = 331 m/s + (0.61 m/s) (T / °C)

Simply substitute 30.°C for T:

v = 331 m/s + (0.61 m/s) (30.°C / °C)

v = 331 m/s + (0.61 m/s) (30.)

v = 331 m/s + 18.3 m/s

v = 349.3 m/s

The temperature was given in 2 significant figures, so we need to round our answer to 2 significant figures.

v = 350 m/s