An ore sample weighs 17.10 N in air. When the sample is suspended by a light cord and totally immersed in water, the tension in the cord is 10.70 N. For related problemsolving tips and strategies, you may want to view a Video Tutor Solution of Buoyancy.

A 8.0 kg freshwater fish at the surface of a lake is neutrally is neutrally buoyant. If the density of its body with its swim bladder deflated is 1060 kg/m³, what volume of gas must be in the swim bladder for the fish to he neutrally

A life raft of cross – sectional area 2.0 m x 3.0 m has its top edge 0.36 m above the waterline when unloaded. How many 75 kg passengers can the raft hold before water starts to leak over the edges? The raft is in seawater of density 1025 kg/m^3.

The traditional method of measuring a person's body-fat ratio is to weigh them on dry land and then weigh them while submerged in water. The body-fat ratio can be calculated using the difference in these weight measurements. Unfortunately, this method requires that the person become submerged in water, which is a problem for those suffering from hydrophobia (fear of water). Angel investors give money to companies that they think have highly marketable products or services in exchange for partial ownership of the Owi company. A company has mailed a proposal to investors seeking money to market a new device for measuring a person's body-fat ratio with no need for the person to get wet. In the company's proposal, the person in the figure is standing on a weight scale in a sealed chamber. Initially, the chamber is maintained at standard atmospheric pressure. However, the pressure is then lowered and the new weight is noted. Derive an expression for the density of the person in terms of his…

A cylinder with a cross-section area A floats with its long axis vertical in a liquid of density p. (1) Pressing down on the cylinder pushes it deeper into the liquid. Find and expression for the force needed to push the cylinder a distance a deeper into the liquid and hold it there. (2) A cylinder with a diameter of 4 cm floats in water. How much work must be done to push the cylinder 10 cm down into the water?

(a) Calculate the absolute pressure at the bottom of a fresh-water lake at a depth of 22.4 m. Assume the density of the water is 1.00 ✕ 103 kg/m3 and the air above is at a pressure of 101.3 kPa. Pa(b) What force is exerted by the water on the window of an underwater vehicle at this depth if the window is circular and has a diameter of 36.0 cm? N

Styrofoam has a density of 32 kg/m3. What is the maximum mass that can hang without sinking from a 50-cm-diameter Styrofoam sphere in water? Assume the volume of the mass is negligible compared to that of the sphere.

Bird bones have air pockets in them to reduce their weight—this also gives them an average density significantly less than that of the bones of other animals. Suppose an ornithologist weighs a bird bone in air and in water and finds its mass is 42.3 g and its apparent mass when submerged is 2.61 g (the bone is watertight). (a) What mass (in g) of water is displaced? g (b) What is the volume (in cm3) of the bone? cm3 (c) What is its average density (in g/cm3)? g/cm3

Bird bones have air pockets in them to reduce their weight. This also gives them an average density significantly less than that of the bones of other animals. Suppose an ornithologist weighs a bird bone in air and in water and finds its mass is 46.0 g and its apparent mass when submerged is 3.60 g (the bone is watertight). What mass of water is displaced? mass of water displaced: kg What is the volume of the bone? volume of the bone: m3 What is its average density? average density of the bone: kg/m³ about us privacy policy terms of use contact us help careers

Bird bones have air pockets in them to reduce their weight. This also gives them an average density significantly less than that of the bones of other animals. Suppose an ornithologist weighs a bird bone in air and in water and finds its mass is 43.0 g and its apparent mass when submerged is 3.60 g (the bone is watertight). What mass of water is displaced?