أرجوكم مساعدة عاجلة

[فيزيائية 12]

Consider aplasma consisting of helium gas at pressure of 10^-3mmHg in which essentially every atom is singly ionized. To what depth will a10 Kc/s electromagnetic wave penetrate this plasma before it is reduced in intensity to 10%of its original value?


من يعرف حل هذا السؤال أكون له شاكرة

 

[musalim12]

اولا تاكد من صحة السوال ، ماذا تعني ب ، kc/s ؟