السؤال 1
1
النقاط: 1
يتم شحن ساق زجاجية بشحنة +6.4 nC عن طريق الشحن بالدلك. عدد الإلكترونات التي تمت إزالتها من الساق هو:
A glass rod is charged to +6.4 nC by triboelectric charging. The number of electrons that have been removed are
0.482% of the electrons are removed from a $10.0\,mg$ sphere of iron $(Z=26,\A=56)$, resulting in a net charge on the sphere. What is the net charge on the iron sphere?
A glass rod is charged to +6.4 nC by triboelectric charging. The number of electrons that have been removed are
0.482% of the electrons are removed from a $10.0\,mg$ sphere of iron $(Z=26,\A=56)$, resulting in a net charge on the sphere. What is the net charge on the iron sphere?
تفسير الإجابة
يتم حساب عدد الإلكترونات باستخدام العلاقة $n = \frac{q}{e}$.
حيث q = 6.4 × 10-9 C و e = 1.6 × 10-19 C.
إذن: $n = \frac{6.4 \times 10^{-9}}{1.6 \times 10^{-19}} = 4 \times 10^{10}$ إلكترون.
حيث q = 6.4 × 10-9 C و e = 1.6 × 10-19 C.
إذن: $n = \frac{6.4 \times 10^{-9}}{1.6 \times 10^{-19}} = 4 \times 10^{10}$ إلكترون.



















