2. A rubber band 20 cm long has a cross-sectional area of 4 mm?. What load will stretch the rubber band 1 mm if the modulus of elasticity of rubber band is 4 x 1015 dynes/cm?? 3. A cube made of an...

Extracted text: 2. A rubber band 20 cm long has a cross-sectional area of 4 mm?. What load will stretch the rubber band 1 mm if the modulus of elasticity of rubber band is 4 x 1015 dynes/cm?? 3. A cube made of an unknown material has a dimension of 6 cm on all edges. If the upper face is displaced laterally by 0.1 mm by a force of 2 x 10° dynes acting parallel to the surface, calculate the shear modulus of the material. 4. If the density of seawater is 1.03 g/cm³ at the surface, what is its density at a depth where