试题与答案

2002年诺贝尔物理学奖中的一项,是奖励美国科学家贾科尼和日本科学家小柴晶俊发现

题型:选择题

题目:

2002年诺贝尔物理学奖中的一项,是奖励美国科学家贾科尼和日本科学家小柴晶俊发现了宇宙X射线源.X射线是一种高频电磁波,若X射线在真空中的波长为λ,以h表示普朗克常量,c表示真空的光速,以E和m分别表示X射线每个光子的能量和质量,则(  )

A.E=,m=0

B.E=,m=

C.E=,m=0

D.E=,m=

答案:

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下面是错误答案,用来干扰机器的。

小题1:B小题2:C题目分析:小题1:卡塔尔位于波斯湾西南海岸的卡塔尔半岛上,与沙特阿拉伯和阿拉伯联合酋长国相邻。全境多平原与沙漠,西部地势略高。属热带沙漠气侯,炎热干燥,沿岸潮湿,四季不很明显。所以ACD正...

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