SAT2 物理题 求解答求问SAT2的物理题目：1.The international Space Station is currently under construction. Eventually,simulated earth gravity may become a reality on the space station. What would be the gravitational field through the cen

SAT2 物理题 求解答求问SAT2的物理题目：1.The international Space Station is currently under construction. Eventually,simulated earth gravity may become a reality on the space station. What would be the gravitational field through the cen
SAT2 物理题 求解答
求问SAT2的物理题目：
1.The international Space Station is currently under construction. Eventually,simulated earth gravity may become a reality on the space station. What would be the gravitational field through the central axis be like under these conditions?
答案：zero
2. An electric current is applied to a gas discharge tube, causing it to glow.When the discharge is viewed through a spectroscope,which type of spectrum is seen?
答案：Line spectra
3.DeBroglie theorized that all moving objects emit waves(matter waves)based on their momentum (λ=h/mv).Accordingly,as your team's defensive end,it is your job to stop the other team's 250 pound fullback. If you could hear the fullback's matter waves and you listened as the opposing fullback received the ball and accelerated toward you, what sound would you hear?
答案：An increase in loudness and an increase in frequency.
4.A radioactive isotope of iodine has a half-life of 8 hours and causes a counter to register 180 counts/min.Find the count rate for this sample of iodine two days later.
答案：2.8/min
谢谢!

SAT2 物理题 求解答求问SAT2的物理题目：1.The international Space Station is currently under construction. Eventually,simulated earth gravity may become a reality on the space station. What would be the gravitational field through the cen
1.如果国际空间站靠旋转离心来模拟重力场,那么中轴线处的重力场是零
2.给气体放电管通电,气体发光,光线透过分光镜看到的光谱是线状光谱
3.···假如你能听到对方后卫的德布罗意波,那么当他从你身后加速向你冲来时,你应该听到“响度变大,同时频率也在升高”（多普勒）
4.一种碘的放射性同位素半衰期是8小时,现在放射性测量仪检测到样品衰变180次/每分钟,那么两天后（6个半衰期,衰减到六十四分之一）再检测这块样品就将是2.8 counts/min
英文水平有限,说个大意,不知是否准确

1.国际空间站正在建设中。最终，模拟地球引力可能成为现实的空间站。什么是引力场的中心轴通过像在这些条件.
答案 最低点;
2.电流是适用于气体放电管，造成辉光。当放电通过分光镜，哪种类型的频谱是？
答案 线光谱
3.德布罗意的理论认为，所有运动着的物体发出的波（波）的基础上他们的势头（λ= H / MV）。因此，当你的球队的防守端，你的任务是阻止...

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1.国际空间站正在建设中。最终，模拟地球引力可能成为现实的空间站。什么是引力场的中心轴通过像在这些条件.
答案 最低点;
2.电流是适用于气体放电管，造成辉光。当放电通过分光镜，哪种类型的频谱是？
答案 线光谱
3.德布罗意的理论认为，所有运动着的物体发出的波（波）的基础上他们的势头（λ= H / MV）。因此，当你的球队的防守端，你的任务是阻止其他球队的250磅的后卫。如果你能听到后卫的物质波你听对方后卫接到球和加速走向你，你会听到什么声音?
答案 增加响度与频率
4.放射性碘同位素有8小时的半衰期和导致计数器寄存器180计数/ min.find计数率的此示例的碘2天后
答案 2.8 每分钟

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