For an x-y rectangular system of coordinates with origin o. which of the following statements is true about the area moment of inertia? the area moment of inertia about any axis is always positive the area moment of inertia about an axis is the product of the area to the square of the distance of its centroid to the axis under consideration the polar area moment of inertia is define with respect to an axis perpendicular to the plane x-y and passing through the origin o the polar area moment of inertia is the sum of the area moment of inertia about x- and y-axes all of the above

Select light for the type of wave, adjust the wavelength so that the light is red, and increase the amplitude of the light to the max. then, select the start button at the source location to begin producing the waves. light is a form of electromagnetic wave, containing oscillating electric and magnetic fields. the wave amplitude detector mentioned above shows how the electric field oscillates in time at the location of the probe. the amplitude of the wave at the location of the probe is equal to the maximum electric field measured. how does the amplitude of the wave depend on the distance from the source?