作者WaitElevator (等不到电梯)
看板Physics
标题[问题] 近代物理的一题问题(Beiser)
时间Mon Mar 3 17:47:02 2008
In its own frame of reference, a proton take 5 min to cross the Milky Way
galaxy which is about 10^5 light-year in diameter.
a.What is the approximate energy of the proton in electronvolts?
b.About how long would the proton take to cross the galaxy as measured by an
observer in the galaxy's reference frame?
请问要如何计算能量?
质子速度要怎麽算?
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 125.233.11.225