- #1
CharS
- 5
- 0
number of electrons leaving crystal surface. any help :)?
1. A scanning tunnelling electron microscope (STM) measures a tiny electrical current tunnelling out of the surface of a crystal. The current is 0.30 pA (0.30 x 10-12 A).
Calculate the number of electrons per second leaving the surface of the crystal.
2. mass of an electron = 9.11 x 10-31 kg
charge of an electron = -1.6 x 100-19 C
3. I have no idea how to answer this. Thanks to anyone who has any tips or pointers :) or can show me how to work it out correctly! x
1. A scanning tunnelling electron microscope (STM) measures a tiny electrical current tunnelling out of the surface of a crystal. The current is 0.30 pA (0.30 x 10-12 A).
Calculate the number of electrons per second leaving the surface of the crystal.
2. mass of an electron = 9.11 x 10-31 kg
charge of an electron = -1.6 x 100-19 C
3. I have no idea how to answer this. Thanks to anyone who has any tips or pointers :) or can show me how to work it out correctly! x