13. A typical piece of wood has a density of 750 kg/m3 . How many 15.0 gram metal army men (or Barbies - your preference) could you safely float on one such piece of wood having a mass of 1.25 kg, in a fresh water tank?

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.

A partially filled bucket of water sits on a scale and its weight is 3.8 N.  A piece of metal is suspended from a thread and completely immersed in the bucket (but does not touch the bottom).  The scale now reads 7.3 N.  Find the volume of the metal.

45) A person weighs 756 N in the air and has a body fat percentage of 28.1%. (a) What is the overall density of this person's body? (b) What is the volume of this person's body? (c) Find the apparent weight of this person when completely submerged in water.

A plastic ball floats in gasoline. The weight of the ball is 40.0 N, and its volume is 10.0 L (that is 10 × 10-3 m3). Use g = 10.0 m/s2. The density of the gasoline is 680 kg/m3. What approximate percentage of the ball is above the gasoline?

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

8. A rock is suspended by a lightweight string. When the rock is in the air, the tension in the string is 39.2 N. When the rock is totally submerged in water, the tension is 28.4 N. When the rock is totally submerged in an unknown liquid, the tension is 21.5 N. What is the density of the unknown liquid?

A rock weighs 39.2 N in air and 26.4 N when submerged into the water of density 1000 kg/m³. What is the volume of the rock? Oa. 0.0011 m³ Ob. 10.8 m³ OC. 0.0013 m³ Od. 1.1 m³

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°

9. A chunk of iron with a mass of 400.0g in air is found to have an apparent mass of 354g when completely submerged in an unknown liquid. (I) What mass of the liquid does the iron displace? (II) What is the density of the fluid? Density of iron = 7.8 g/cm.