[填空题]
(a) Compare the shift in frequencylqey . jb7-)c do de.k1vn)s d50x)zh63ro gfx if a 2000-Hz source is moving-bbzb1dlte uia0v c.99n9c fjg z bm -i-g0*4f toward you at 15 m/s versus you moving toward it at 15 m/s Are the two frequencies ec *0bdf9gcnua9bt. -bbil- -vi1 fz mg049jzexactly the same? Are they close? $f'_{source\,movine}$ Hz
$f'_{observe\,movine}$ Hz
(b) Repeat the calculation for 150 m/s and then again
$f'_{source\,movine}$ $ \times10^{ 3}$Hz
$f'_{observer\,movine}$ $ \times10^{ 3}$Hz
(c) for 300 m/s What can you conclude about the asymmetry of the Doppler formulas?$f'_{source\,movine}$ $ \times10^{ 3}$Hz
$f'_{observer\,movine}$ $ \times10^{ 3}$Hz
