Differentiate between:
Donor region and Recipient region.
Donor region: A donor region is one that exports or supplies resources, labor, or goods to other regions. These regions typically have a surplus of certain resources that can be distributed.
Recipient region: A recipient region is one that receives resources, labor, or goods from other areas. These regions often lack sufficient resources to meet their demands and rely on external supplies.
Derive an expression for maximum speed of a vehicle moving along a horizontal circular track.
Predict the type of cubic lattice of a solid element having edge length of 400 pm and density of 6.25 g/ml.
(Atomic mass of element = 60)