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Extra Credit (a). A wooden cube 3.0 cm on a side floats level on water with just 1.5 mm of the cube showing above the surface of the water. What is the density of the wood? (density of water is 1,000 kg/m3). (1.5 points) (b). If 1.40 x10 6 J of heat is required to raise the temperature of a material from 22°C to 310°C, what is the mass of the material if the specific heat of the material is 130 J/kgoC? (1.5 points)