作业帮2道物理题,explain why the relative atomic mass of the atom is le
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2道物理题,
explain why the relative atomic mass of the atom is less than the sum of the nucleons
解释为什么原子相对质量小于核子总数.
2.under particular conditions not all the heat energy is shown by a rise in temperature,explain in as much detail why this is.
在特定的条件下不是所有的热能量都是显示在上升的气温,尽可能的详细解释为什么.
explain why the relative atomic mass of the atom is less than the sum of the nucleons
解释为什么原子相对质量小于核子总数.
2.under particular conditions not all the heat energy is shown by a rise in temperature,explain in as much detail why this is.
在特定的条件下不是所有的热能量都是显示在上升的气温,尽可能的详细解释为什么.
1.质子的质量为1.007825,中子的质量为1.008665.相对原子质量是把该原子的质量和H原子质量作比的值.所以原子的相对质量=质子质量+中子质量（电子质量忽略）=（质子数+中子数）*1(偏小）= 原子的相对质量.所以有核子总数>相对原子质量.
2.因为能量的转换只有在隔热密闭的条件下才内能守恒.不满足条件时候热能还可以转换成动能,比如蒸汽机.还可以转换成电能,比如火力发电.还可以转换成势能等.
2.因为能量的转换只有在隔热密闭的条件下才内能守恒.不满足条件时候热能还可以转换成动能,比如蒸汽机.还可以转换成电能,比如火力发电.还可以转换成势能等.
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