ASK YOUR TEACHER As shown below, a 102 kg block with a density of 1170 kg/m³ is hanging from a string and is completely submerged in a liquid. The buoyant force on the block is 857 8. Determine the string tension and the density of the liquid. Fr= Pliquid=

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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 water light) a. What mass of water is displaced? b. What is the volume of the bone? c. What is its average density?

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 scientist is calculating the density of an ore sample. The scien- tist measures that the ore sample weighs 22.4 N in air. When the sample is suspended by a thin light cord and totally immersed in water, the tension in the cord is 14.2 N. What is the density of the ore sample that the scientist calculates. You can assume that any buoyant force from air is negligible.

Question 1 (1 point) 1.00 L (0.00100 m^3) of water is poured into a large container. 100 g of ice is added to the container. The ice floats freely and does not touch the bottom of the container. The density of ice is 917 kg/m. What is the magnitude of the buoyant force on the ice? O 9.81 N O 981 N 98.1N 0.981 N

Part B - An aluminum block of volume 200 × 10-6 m3 is held by a string at rest in oil as shown. ρAL = 2700 kg/m3, ρoil = 900 kg/m3, and g = 10 m/s2.  Now the same block is placed in water, still completely submerged. Water is more dense than oil. The net force on the block will  ______.       Answers: decrease   increase   stay the same   Part C -  Now the same block is placed in water, still completely submerged. Water is more dense than oil. The buoyant force on the block will  ______.       Answers: stay the same   decrease   increase   Part D -  Now the same block is placed in water, still completely submerged. Water is more dense than oil. The tension in the string will  ______.       Answers: stay the same   decrease   increase

A copper (with density of 8.96 g/cm3) bullet is placed in a pool of mercury (with density of 13.56  g/cm3).  What fractional part of the volume of the bullet is submerged?

3. An object has a weight of 8.10 N when in air. However, it apparently weighs only 4.20 N when it is completely submerged in water. What is the density of the object? 22911 kg/m³ ceil6 cci16 c ci16 cci16 cei 16 cci16 cci16°

27. Assume that the three blocks portrayed in Figure P4.27 move on a frictionless surface and that a 42-N force acts as shown on the 3.0-kg block. Determine (a) the accel- eration given this system, (b) the tension in the cord connecting the 3.0-kg and the 1.0-kg blocks, and (c) the force exerted by the 1.0-kg block on the 2.0-kg block. 42 N 3.0 kg 1.0 kg 2.0 kg