You blow across the open mouth of an empty test tube and producethe fundamental standing wave of the air column inside the testtube. The speed of sound in air is 344 m/s and the test tube actsas a stopped pipe.(a) If the length of the air column in the test tubeis 12.5 cm, what is thefrequency of this standing wave? kHz(b) What is the frequency of the fundamental standing wave in theair column if the test tube is half filled with water? kHz Determine the moment of inertia of the shaded area about the y axis. Express your answer to three significant figures and include the appropriate units. Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type Iy =