Acube of iron and a cube of wood, each having a volume of v = 1.65 10-4 m3, are each placed in a large beaker of water. the density of the wood is ϝwood = 3.73 102 kg/m3 and the density of the iron is ϝiron = 7.86 103 kg/m3. calculate the buoyant force on each.

Buoyant force on the wood = 0.603 N

Buoyant force on the iron = 12.722 N                  

Explanation:

We have given the cube of iron and cube of wood both have volume

Density of wood

And density of the iron

Acceleration due to gravity

We know that buoyant force is given by

So buoyant force on the wood =

So buoyant force on iron =

where is the photo and the answer choices?

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.