Q4: A 7-cm diameter solid aluminum ball (SG palance nicely when submerged in a fluid as shown in figure. a) If the fluid is water, what is che diameter of the brass ball? b) If the brass ball has a diameter of 3.8 cm, what is the density of the fluid? 2.7) and a solid brass ball (SG=8.5) %3D 2 pulleys Fluid brass aluminum D 7 cm

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