2. Determine the tension in the figure below. A wooden block has a density of 700kg/m³ and volume 0.003m³. 20% of the wooden block's volume is submerged in the water.

A ball has a diameter of 3.70 cm and average density of 0.0837 g/cm3. What force is required to hold it completely submerged under water? magnitude N direction ---Select--- v

7. A rock weighs 16.25 N in the air. When it is hanging from a light string and fully submerged in a beaker of water, the tension in the cord is 10.15 N. What are the volume and density of the rock?

98. A rectangular block of wood floats in fresh water (density = 1000 kg/m³) with its lower 10 cm submerged. What distance (in cm) will be submerged when it floats in seawater (density = 1030 kg/m³)?

3. A rectangular block of volume Vo is placed in a tank of water and sinks to the bottom. Describe the buoyant force acting on this block. What could be a possible density of the block?   a. The buoyant force equals the weight of a volume of water of Vo, 5.00 grams/cm3   b. No buoyant force acts on the block, 0.0500 grams/cm3   c. The buoyant force equals the weight of a volume of water of Vo, 0.450 grams/cm3   d. The buoyant force equals the weight of a volume of water of Vo, 0.100 grams/cm3   e. The buoyant force equals the weight of a volume of water of one-half of Vo, 0.333 grams/cm3

21. An irregularly shaped object weighs 10.0 N in air, but 4.00 N when submerged in water. What is the density of the object? 1 67 103 1/3

6. A piece of cork has a mass of 550 grams. An 18 N sinker is attached to it. With only the sinker in water, the cork and sinker weigh 20.7 N, with the sinker and cork both in water, they weigh 0.9 N. When the sinker was immersed in alcohol, it weighed 15.7 N. Determine the density of the cork in kg/m³? What is the specific gravity and density of the sinker? Determine the density of the alcohol in gm/ml.

1. Two blocks of different sizes and masses float in a tray of water. Each block is half submerged, as shown in the figure. Water has a density of 1000 kg/m³. What can be concluded about the densities of the two blocks? 2x 2x (A) The two blocks have different densities, both of which are less than 1000 kg/m³. (B) The two blocks have the same density of 500 kg/m. (C) The two blocks have the same density, but the density cannot be determined with the information given. (D) The larger block has a greater density than the smaller block, but the densities of the blocks cannot be determined with the information given.

9. A liquid is flowing through a horizontal pipe whose radius is 2.22 x10-2 m. The pipe bends straight upward through a height of 9.8 m and joins another horizontal pipe whose radius is 3.82 x10-2 m. What is the speed of the liquid in the lower horizontal pipe if the pressure in both horizontal pipes is the same? x L0228) m/s

2. A rectangular biock with a base area of 25 cm2 is submerged in water of density 1000kg/m3 a. Find the (i) pressure p,, due to the water acting on the top surface of the block (ii) Pressure p, due to the water acting on the bottom surface of the block. b. Calculate the (i) force exerted by the water on the top surface of the block, (i) Force exerted by the water on the bottom surface of the block.