两个同方向、同频率、等振幅的简谐运动合成, 如果其合成振动的振幅仍不变, 则此二分振动的相位差为:
未知类型:{'options': ['[img src="http://img2.ph.126.net/Oi7G4kXzpdYYLErDQ8j4Rw==/4900479344632768670.jpg"]', '[img src="http://img1.ph.126.net/3EPsQfqXIqEnY7frRf8y6g==/6619585565769691129.jpg"]', '[img src="http://img1.ph.126.net/GjZFU7NJ061usb32Cth1fw==/3300857051986209787.jpg"]', '[img src="http://img2.ph.126.net/NUjggHOwArQY_o5PsCz9PQ==/2043508331019674549.jpg"]'], 'type': 102}
未知类型:{'options': ['[img src="http://img2.ph.126.net/Oi7G4kXzpdYYLErDQ8j4Rw==/4900479344632768670.jpg"]', '[img src="http://img1.ph.126.net/3EPsQfqXIqEnY7frRf8y6g==/6619585565769691129.jpg"]', '[img src="http://img1.ph.126.net/GjZFU7NJ061usb32Cth1fw==/3300857051986209787.jpg"]', '[img src="http://img2.ph.126.net/NUjggHOwArQY_o5PsCz9PQ==/2043508331019674549.jpg"]'], 'type': 102}
举一反三
- [ ]是平面简谐波波函数。 未知类型:{'options': ['[img src="http://img2.ph.126.net/wjV5ynMkHOZWU6tVOJpgWQ==/6631558147884798602.png"]', '[img src="http://img1.ph.126.net/BYK6eRy2m3CFIGn6uOyBvg==/6631603227861540016.png"]', '[img src="http://img2.ph.126.net/YpG0D7ifszUGb3ZVafQx3g==/6631454793791791103.png"]', '[img src="http://img1.ph.126.net/P6Qa6Cllm5RRaIcGlnUM_g==/6631739567303384107.png"]'], 'type': 102}
- 将两个振动方向、振幅、周期都相同的简谐振动合成后,若合振动的振幅和分振动的振幅相同,则这两个分振动的位相差是 未知类型:{'options': ['\u200d<img src="http://img2.ph.126.net/rrpvLTSECCMjMZedZz_qgg==/6608803754747705357.png">', '[img src="http://img1.ph.126.net/EMi2DzrFelT_iJHa79n-ZA==/2891873910742791817.png"]', '[img src="http://img0.ph.126.net/ajMeswoKoi38VnCZTwx9-g==/3239495507063483904.png"]', '[img src="http://img2.ph.126.net/LkNy1ODGU2OZ4cQPWl9HsQ==/3663678296966209505.png"]'], 'type': 102}
- 下面哪些课堂活动的设计符合翻转课堂的理念? 未知类型:{'options': ['[img src="http://img2.ph.126.net/fLmm_3KHOpOcG-uiIjTVlw==/6608621235817664981.png"]', '[img src="http://img2.ph.126.net/DzxEvrA1OrTg4VP84lZ73g==/6608593748026970699.png"]', '[img src="http://img1.ph.126.net/_ASXH7-Of0rFaZcdNd23UA==/6608186928725757415.png"]', '[img src="http://img2.ph.126.net/6SlanK-7uuLkFaTzz0JYgg==/6608256197958303878.png"]'], 'type': 102}
- 电磁场量的法向边界条件为()。 未知类型:{'options': ['[img src="http://img0.ph.126.net/EsIkaXjnKukiyimHp6dYpQ==/6630400362140980911.png"]', '[img src="http://img1.ph.126.net/Qvas15HCDc_RrWbLruYPRw==/6619063297747523047.png"]', '[img src="http://img0.ph.126.net/DRI9k3pVjDPeDmngiOgT3Q==/6630279415861923459.png"]', '[img src="http://img2.ph.126.net/IiW1SDf3LX-s_IKSk4Vpvg==/6619471216561427789.png"]'], 'type': 102}
- 设[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_067016aa-77f2-4aff-bd36-e3fa5f1bd893.png"],[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_358ab06c-7f19-4ae6-ba82-424c72bd4d18.png"],则[img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_2b561af0-b65d-4e5e-936b-72b15b4f0f56.png"][img src="http://edu-image.nosdn.127.net/_PhotoUploadUtils_92284d1b-6fe3-4dc1-a732-618796cd01a4.png"] A: 6 B: 10 C: 8 D: 4