Sounds coming from moving objects, such as the siren of an emergency vehicle, appear to change pitch as the object moves toward or away from you. Compare the wavelength of a siren based on its motion toward or away from you.

Put in order from shortest wavelength to longest wavelength

From these following (order these from shortest to longest wavelength):
away from you at 36 mph
away from you at 31 mph
neither toward or away from you
toward you at 47 mph
toward you at 36 mph
toward you at 3 mph

Apoint charge +q is at the origin. a spherical gaussian surface centered at the origin encloses +q. so does a cubical surface centered at the origin and with edges parallel to the axes. select "true" or "false" for each statement below. the electric flux through the spherical surface is greater than that through the cubical surface. suppose (for this statement only), that q is moved from the origin but is still within both the surfaces. the flux through both surfaces remains unchanged. the area vector and the e-field vector point in the same direction for all points on the spherical surface. the e-field at all points on the spherical surface is equal due to spherical symmetry. the flux through the spherical gaussian surface is independent of its radius.