𝑫 𝒌𝒈 𝒎𝟑 : 𝑴 𝒈 𝒎𝒐𝒍 = 𝑫/𝑴 𝒎𝒐𝒍 𝒎𝟑 𝟏 𝑫/𝑴 𝒎𝒐𝒍 𝒎𝟑 𝑵𝑨 𝒏𝒈𝒖𝒚𝒆𝒏 𝒕𝒖 = 𝑫/𝑴 𝑵𝑨 𝒏𝒈𝒖𝒚𝒆𝒏 𝒕𝒖 𝒎𝟑 𝟐 𝟐 𝒅𝒊𝒆𝒏 𝒕𝒖 𝑫/𝑴 𝑵𝑨 𝒏𝒈𝒖𝒚𝒆𝒏 𝒕𝒖 𝒎𝟑 = 𝟐𝑫/𝑴 𝑵𝑨 𝒅𝒊𝒆𝒏 𝒕𝒖 𝒎𝟑 𝟑 2x3 mm2 chiều dài 10 mm, diện tích mặt là 𝒍 𝑹=𝝆 𝒍 𝒎 𝒍 𝑺 𝟏 ⇒ 𝝈 = 𝑹𝑺 𝜴𝒎𝟐 = 𝑹𝑺 𝜴𝒎 𝝈= 𝝆 −𝟏 𝒏 = 𝟐 𝒅𝒊𝒆𝒏 𝒕𝒖 𝑫 𝒌𝒈 𝒎𝟑 : 𝑴 𝒈 𝒎𝒐𝒍 𝑵𝑨 𝒏𝒈𝒖𝒚𝒆𝒏 𝒕𝒖 𝒎𝟑 = 𝟐𝑫/𝑴 𝑵𝑨 𝒅𝒊𝒆𝒏 𝒕𝒖 𝒎𝟑 𝑙 −1 𝛺𝑚 𝑅𝑆 2𝐷/𝑀 𝑁𝐴 𝑑𝑖𝑒𝑛 𝑡𝑢 𝑚3 1,6 10−19 𝒖 = 𝟑, 𝟕𝟖 𝟏𝟎−𝟒 𝒎𝟐 𝑽 𝒔 𝑰𝑨𝒍 = 𝑰𝑪𝒖 𝑰𝑪𝒖 = 𝑰𝑨𝒍 𝒅𝑪𝒖 𝟏 = 𝒅𝑨𝒍 𝟐 𝒗𝒅 𝒗𝒅 𝑪𝒖 𝑨𝒍 𝒏𝑪𝒖 =𝟒 = 𝟕, 𝟔 𝒏𝑨𝒍 𝟑, 𝟓 𝟏𝟎−𝟏𝟒 𝒔 𝑛𝐶𝑢 = 1𝐷𝐶𝑢 : 𝑀𝐶𝑢 𝑁𝐴 𝑑𝑖𝑒𝑛 𝑡𝑢 𝑚3 𝝉𝑪𝒖 𝝈𝑪𝒖 𝒎 −𝟏𝟏 𝒔 = = 𝟐, 𝟓 𝟏𝟎 𝒏𝑪𝒖 𝒆𝟐 𝐯𝑻 = 𝟏, 𝟏𝟔 𝟏𝟎𝟓 𝒎 𝒔 𝑛𝐴𝑙 = 3𝐷𝐴𝑙 : 𝑀𝐴𝑙 𝑁𝐴 𝑑𝑖𝑒𝑛 𝑡𝑢 𝑚3 𝝉𝑨𝒍 𝝈𝑨𝒍 𝒎 −𝟏𝟏 𝒔 = = 𝟏, 𝟎𝟐𝟗 𝟏𝟎 𝒏𝑨𝒍 𝒆𝟐 𝜦 𝑨𝒍 = 𝐯𝑻 𝛕𝐀𝐥 = 𝟏, 𝟏𝟗 𝟏𝟎−𝟔 𝒎 𝜦 𝑪𝒖 = 𝐯𝑻 𝝉𝐂𝐮 = 𝟑, 𝟏𝟎 𝟏𝟎−𝟔 𝒎 𝟐 𝒎 𝟒, 𝟑𝟐 𝟏𝟎−𝟑 ( 𝒔) 𝑽 𝟐, 𝟒𝟓𝟕 𝟏𝟎−𝟏𝟒 (𝒔)