Multiple ChoiceWhich physical phenomenon is primarily caused by density differences within fluids?27views
Multiple ChoiceIf you have two solid steel spheres and sphere 2 has twice the radius of sphere 1, how does the density of sphere 2 compare to that of sphere 1?37views
Multiple ChoiceGiven that a table tennis ball has a mass of 2.7g and a diameter of 40mm, what is the average density of the ball in kg/m3? (Assume the ball is a perfect sphere.)36views
Multiple ChoiceA cylindrical specimen of brass has a diameter of 20 mm and a height of 100 mm. If its mass is 0.27 kg, what is the density of the brass in kg/m3?28views
Multiple ChoiceIn fluid mechanics, specific gravity (relative density) is defined as the ratio of a substance's density to the density of water at standard conditions. What is the specific gravity of pure water relative to itself?
Multiple ChoiceIn fluid mechanics, the specific gravity (relative density) of a substance is defined as the ratio of its density to the density of water at 4°C. Using typical sea-level values ρair≈1.2kg/m3 and ρwater≈1000kg/m3, what is the specific gravity of air?
Multiple ChoiceIn the context of density, the specific gravity of air (relative to water at the same temperature) is closest to which value?
Multiple ChoiceA wooden door is 1 m wide, 2.5 m tall, 6 cm thick, and weighs 400 N. What is the density of the wood in g/cm3? (use g = 10 m/s2)1322views27rank1comments