Fill in the blanks
The speed of waves, according to Maxwell's equation, turned out to be very close to the speed of_____.

Speed of sound wave is

Fill in the blanks Electrostatic deals with the study of_____

Fill in the blanks Sound waves in air are ______longitudinal waves of compression and rarefraction.

The relation between speed of wave v, wavelength lambda and time period T is

From Borjhar Air Port of Guwahati two aeroplanes took off simultaneously, one towards the east with the speed of 720 km. per hour and the other towards the west with the speed of 880 km. per hour. After how many hours will the two aeroplanes be 4000 km. apart? Solve the problem by forming an equation.

How are the wavelength and frequency of a sound wave related to its speed?

A person has a hearing range from 20 Hz to 20 kHz. What are the typical wavelengths of sound waves in air corresponding to these two frequencies? Take the speed of sound in air as 344 m s^-1 .