Question and Problems:
1. Calculate the speed of sound in Air at 25°C. The specific ratio of air is 1.40 and it's molar mass is 28.97×10-3it/mol.

2. Calculate the speed of sound in seawater given that the bulk modulus of seawater is
2.34×10.9 N/M2 and it's density is 1.025× 10,3kg/M3.

3. Calculate the frequency of green light of wavelength 500 nm.

4. Calculate the wavelength of yellow light of frequency 5.1×10,14 Hz.