Answer : The correct option is, (B) Hydrochloric acid(HCl)
Explanation :
Rust is an iron oxide, which is formed by the reaction of iron with oxygen in the presence of water.
As we know that the rust is an iron oxide (base) which is removed by an acid.
As per given options, the acid used to remove the rust from the metal is hydrochloric acid and not sulfuric acid because sulfuric acid is an oxidizing agent which oxidizes the metal more.
While the other options, ammonia and sodium hydroxide are a base.
Hence, hydrochloric acid is used to remove rust from metal.
Metal bar is aligned along East- West direction and it is dropped vertically down
So its velocity is along -Z direction,
Now the Earth's magnetic field is towards north so its towards +Y direction
now we have formula for force on a moving charge
v = - z direction
B = + y direction
now by the above formula
So force is towards East
so all positive charge is towards East end
Answer:
Mechanical Energy.
Explanation:
This can occur as either kinetic or potential energy.
Well idk if this helps but the formula to solve acceleration is
a=F/m=(100kg)=1.0m/s 2