Try to get aluminum to float. A 55kg swimmer climbs onto a styrofoam block whose density is 160 kg/m^3.? The mass of the Styrofoam ball = Vd = 0.3 kg. If the water level reaches ONE-FOURTH OF THE WAY UP the styrofoam, what is the block's volume (in m^3)? This free density calculator determines any of the three variables in the density equation given the other two. Lower density foam is also great for occasional-use comfort products. Density is a function of the chemistry used to produce the foam and additives included with the foam chemistry. Relevance. Density is a measurement of the mass per unit volume. The weight of the ball = 2.94 N The buoyancy force on the ball = 9.8 N The weight that can be supported by the ball is 9.8 N - 2.94 N = 6.86 N The maximum mass = 0.7 kg = 700 g 800.92315 kg/m 3 / 16.018463 [ (kg/m 3) / (lb/ft 3) ] = 50 lb/ft 3. Here you can make instant conversion from this unit to all other compatible units. If used as a soft bed topper by an average-sized individual every day, a 1.5LB density foam will begin to show a noticeable decline in support and comfort after six months to a year. Density Converter / Densities Of Various Materials / Density Of Ice Online converter page for a specific unit. Talk with your partner about this possibility- can you change the mass of the aluminum block without changing the volume of the aluminum block? Polystyrene is composed of styrene particles that have undergone polymerization. Measured and expressed in pounds per cubic foot (pcf) or kilograms per cubic meter (kg/m3), density is one of the most important of all foam properties. In addition, explore hundreds of other calculators including topics such as finance, math, health, fitness, weather, and even transportation. Density of Wood Density of Ice Density of Styrofoam How do these compare? EM. A 55kg swimmer climbs onto a styrofoam block whose density is 160 kg/m^3. ... L Density, kg/L Blue 0.80 Yellow 0.80 Green 0.80 Red 0.80 Mystery. Made up of 95 percent air, polystyrene is used in a wide variety of products, from insulation to foam cups. To convert among any units in the left column, say from A to B, you can multiply by the factor for A to convert A into kg/m 3 then divide by the factor for B to convert out of kg/m 3. The density of styrofoam is lower: about 0.028 to 0.045 times that of water. Extruded polystyrene foam (XPS) or STYROFOAM consists of closed cells, offers improved surface roughness and higher stiffness and reduced thermal conductivity. Or, you can find the single factor you need by â¦ Answer Save. 2 Answers. Polystyrene, trade name Styrofoam, has a density of 1.05 grams per cubic centimeter. The density range is about 28â45 kg/m3 . Experiment with choosing a material: material S=sinker F= Floater Density given Ice S 0.92 Kg/L Aluminum S 2.70 Kg/L Brick S 2.00 Kg/L Wood F 0.40 Kg/L Styrofoam F 0.15 Kg/L 4. DENSITY. 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