Posted by **precious** on Sunday, January 6, 2013 at 1:43am.

An electron moving at a speed of 5 x 10 raise to power 6m/s was shot through a sheet of paper which is 2.1 x 10 raise to power 4cm thick. The electron emerges from the paper with a speed of 2 x 10 raise to power 6 m/s. Find the time taken by the electron to pass through the sheet.

Pls show full working and formular.

- Another duplicate post -
**drwls**, Sunday, January 6, 2013 at 4:49am
This is quite annoying

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