Answer:
Option C
Explanation:
Metal conducts heat much better than wood does.
Since Azam's hand is hotter than room temperature, both the metal and the wood conduct heat away from it.
Object true weight is given as

now we know that g = 9.8 m/s^2


now when it is complete submerged in water its apparent weight is given as 82 N
apparent weight = weight - buoyancy force
apparent weight = 82 N
weight = 123 N
now we have
82 = 123 - buoyancy force
buoyancy force = 123 - 82 = 41 N
now we also know that buoyancy force is given as




now as we know that mass of the object is 12.55 kg
its volume is 4.18 * 10^-3 m^3
now we know that density will be given as mass per unit volume



so here density of object is 3002.4 kg/m^3
A proton repelling another proton
Like charges of the protons would repel one another.