Both questions and all parts please

1. A raft is 2.4 In wide and 4.6 m long. When a horse is loaded onto the raft, it sinks 4.] cm deeper into the water. What is the weight of the horse? (4) 2. A cube with edges oflength I = 2.8 cm and density .05 = 2.7 >( 103kgfm3 is suspended from a spring scale. a. \\Nhen the block is in air, what will be the scale reading? {1) b. Assuming density of water is pw = 1000 leg/m3, when it is completely immersed in water what will be the scale reading? (2) c. How much is the buoyant force when the cube is in water? [1) d. If the cube is submerged in an oil, 0.83 cm oats above the oil surface. What is the density of that oil? (2)