90 m thick. Its density is 700 kg/m^3. a. What volume of lead must be fastened

6. A solid aluminum bar weighs 89 N in air. a. What is its volume? b. If it is suspended from a rope and totally submerged in water, what is the tension in the rope?

Oil having a density of 930 kg/m^3 float on water. A rectangular block of wood 4.o cm high and with a density of 960 kg/m^3 floats partly in the oil and partly in the water. The oil completely covers the block. how far below the interface between the two liquids is the bottom of the block?

A common way of salvaging cannons from old wrecks is to attach an inflatable balloon filed with air.  Assume that the cannon is a solid cylinder of iron which is 1.30m long with a radius 17.3cm.  The density of iron is 7.87g/cm^3. If an air bag were filled twice the volume necessary.   a. What volume of air bag wil be floating above the water surface?

A piece of copper has a mass of 2.6 kg. a.What is the volume of this piece of copper?  b.The copper is then totally submerged in water. What is the buoyant force acting on it?  c. What is the piece of copper’s apparent weight in the water?

A 57kg object with a volume of 0.04m3  is dropped into a fresh water lake, which has a density of 1000kg/m3. a. What is the object's force of gravity? b. What is the buoyant force on the object? c. Based on your answers from a) and b), will it float or sink?

1. Suppose a person is 182 cm tall. A typical blood pressure is often given as 110/70 mm Hg, with a mean pressure of 80 mm Hg. A. Do you think this is the gauge pressure or absolute pressure? Why? If the pressure at the top of the head is about 39 mm Hg, how far away is this person's head from the heart? Assume the density of blood is about 6% higher than that of water. t, What then would be the blood pressure.of this 6, person at their feet? b. Suppose this person suffers a puncture wound around the same height as the heart where the opening is about 3 mm in diameter. How far could blood shoot from their body assuming it comes out horizontally with 0 m/s initial horizontal velocity? %3D = 0.754 Since horizontal velocity is zero it will not go eny for than body Please explain the variábles used in the equation to solve for F= P.A in partad of this question. Comment > Thank yo!!

A U shaped tube with diameter 2.00 cm, open to the air on both ends, contains mercury. Oil ispoured into the left arm until the oil column is 15.0 cm high. Then water is poured into the rightarm until the water column is 10.0 cm.a. On which side of the tube is the mercury level higher? Support your answer.b. What is the change in height of the mercury on both sides of the tube?c. To make the mercury return to its original level, which fluid would you have to add to thetube, and how much would you have to add (in cm cubed)?

A raft has dimensions 7.0 m x 7.0 m with a thickness of 1.0 m and made of material with average density 650 kg/m3.    a. When floating in water, what percentage of the volume is under water?   b. What is the pressure underneath the raft?   c. How heavy of a load is necessary to cause the raft to be 80% submerged in water?   d. If the raft is made with a different material of lower density and 80% of it is still submerged, how if at all would your answers to (a), (b) and (c) change?   e. , explain how, if at all, the answer to (b) is related to the buoyant force. f. Imagine that the load increases enough to fully submerge and then sinks the raft to the bottom of the lake.  How, if at all, does the buoyant force vary during this process?