What is Geomorphology?
It is the scientific study of land forms, their processes and sediments at the surface of the Earth is known as Geo morphology.
What is 9log9(4)?
Exponential and log functions are inverse of each other. Hence aloga(x)=x, for all real and positive and therefore 9log9(4) = 4.
How can you identify that which plate of a capacitor is positively charged?
In order to check the electric field due to any type of charge we use a unit positive charge as a test charge. If this test charge will move away from the plate it shows that plate is positively charged.