铁块的密度为7.9×10³(g取10N/Kg)测得此铁块的重力为7.9N,则铁块的体积是____m³
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![铁块的密度为7.9×10³(g取10N/Kg)测得此铁块的重力为7.9N,则铁块的体积是____m³](/uploads/image/z/917412-60-2.jpg?t=%E9%93%81%E5%9D%97%E7%9A%84%E5%AF%86%E5%BA%A6%E4%B8%BA7.9%C3%9710%26%23179%3B%EF%BC%88g%E5%8F%9610N%2FKg%EF%BC%89%E6%B5%8B%E5%BE%97%E6%AD%A4%E9%93%81%E5%9D%97%E7%9A%84%E9%87%8D%E5%8A%9B%E4%B8%BA7.9N%2C%E5%88%99%E9%93%81%E5%9D%97%E7%9A%84%E4%BD%93%E7%A7%AF%E6%98%AF____m%26%23179%3B)
铁块的密度为7.9×10³(g取10N/Kg)测得此铁块的重力为7.9N,则铁块的体积是____m³
铁块的密度为7.9×10³(g取10N/Kg)测得此铁块的重力为7.9N,则铁块的体积是____m³
铁块的密度为7.9×10³(g取10N/Kg)测得此铁块的重力为7.9N,则铁块的体积是____m³
v=m/ρ=G/(gρ)=7.9/(10×7.9×10³)m^3=10^-4m^3=100cm^3