Physics - Density and Pressure

Calculate the mass of a snlld guld rectangular trar that has dimelmlom Iwh : 5.95 (m x 12.5 (m x215 cm. (The densrty of gold l5 19.3 x m3 kg/mj.) We wlll use me definlunn of denslty and the geometry of the bar to find the mass of the bar. Sulvlng for mass from me «luauon for den5lty p : my, we have me follcwlng «luauon for dermng the mass M uf the gold bar from me densrty of gold pgu‘d and me vulume Vaf the rectangular gold bar. M : Pguldv We know that me vnlume of the bar .5 glven by the product of the length tunes the mam tunes the helght of the bar, that l5,V : Iwh. u. s; unns, I: x 1er m, w : x 10*2 m, andh : xnr2 m. so that we have V:Iwh x 10*3 V: gqg y. \1-5 111‘ = mam: cm, Count“) Val—‘3 loom-1:»; 9!» 1 3 /_, : Lousl‘lo’ '0 looooon c» l 3 ’99 cm} , \M .'. )owssns’w’ # Nut, Ilwv’ z.oucw~>"/"= MM“? )5