【简答题】在匀速圆周运动中,质点的动量是否守恒?角动量呢?
【单选题】有一名潜水员在水面挣扎,他把眼睛睁大却对任何事视若无睹, 面镜已被推落,BCD 尚未充气而潜水长叫他充气也不听,因此这名潜水员( ) 。若要帮助他,我应该要先 。
D.
已失控;为自己和他建立正浮力(将 BCD 充气并/或丢掉配重)
【单选题】Jack: Mark, you know your bike? Mark: Yes, what about it? Jack: You know you said I could borrow it? Mark: Yes. ______, will you? Jack : Well, I did borrow it but, well, I'm afraid I've had a bit of a...
【单选题】在匀速圆周运动中,质点的动量是否守恒? 。对于圆心的角动量是否守恒? 。
【简答题】听录音,填空。 Rose: ____________ do you do on ____________, Jack? Jack: I do ____________ ____________, ____________ ____________ and watch ____________. Mary: What do you do on ____________? Jack: I ______...
【简答题】在匀速圆周运动中,质点的动量是否守恒?角动量呢?
【简答题】在匀速圆周运动中,质点的动量是否守恒?角动量呢?