物理 高中 約3年以前

到底在幹嘛😵‍💫

A better resolution for the two headlights of a car in a picture can be achieved by reducing (A) the separation of the headlights; (B) the wavelength of light; (C) the aperture diameter of the camera lens; (D) All; (E) None.

物理 高中 約3年以前

怎麼寫⋯

2.2 A batch of 100g of Na2SO4 is dissolved in 200g of H20 and the solution is cooled until 100g of Na2SO4:10H2O is crystallized out. Please do a DOF analysis and calculate the composition of the remaining solution. (Na2SO4:10 H2O = 322.2, Na2SO4=142.05) Answer: DOF = 0; Na2SO4 28%, H20 72%