A student has something in his mind and he should ignore the irrelevant parts and read to locate specific information when reading. Which of the following strategies can be used?
【简答题】A 5.0 MeV alpha particle (Z=2) approaches a gold nucleus (Z=79) with an impact parameter of 2.6×10-13 m. The scattered angle is( ).The cross section s is( )
【简答题】• Locate the nucleus of “B” according to the contexts (two or three different “A”s). Read them, record them and upload them. Ø A: Paul looks happy! Ø A: I think Paul needs a new car. ü B: He’s got a n...