When a cube-shaped object with a mass of 235 kg is supported fully underwater by a lifting cable, the tension in the cable is Tair = 617 N. Calculate the density of the object and the volume of the object based on the information above.

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 45.0 g and its apparent mass when submerged is 3.60 g (the bone is watertight). What mass of water is displaced? kg mass of water displaced: .0414 What is the volume of the bone? 3. m³

A life preserver is manufactured to support a 70 kg person with 25% of his volume out of the water.   If the density of the life preserver is 100 kg/m^3 and it is completely submerged, what must its volume be? Assume that the density of the person to be about the same as the density of water, 1000 kg/m^3. Express your answer with the appropriate units.

A 20.0-kg lead mass rests on the bottom of a pool. (a) What is the volume of the lead? (b) What buoyant force acts on the lead? (c) Find the lead’s weight. (d) What is the normal force acting on the lead?

To determine an athlete's body fat, she is weighed first in air and then again while she's completely underwater. It is found that she weighs 690 NN when weighed in air and 40.0 NN when weighed underwater. What is her average density?

You put a marble on a balance and find it has a mass of 1.2 grams.  It is an irregular shape, so you need to do displacement to find its volume. You put it in a graduated cylinder with a starting volume of 30.0 mL of water. After you add the marble, the water rises to 31.5 mL.  What is the density? Group of answer choices 0.038 g/mL 1.3 g/mL 0.80 g/mL 1.8 g/mL