The Earth was formed about 4.5 billion years ago, probably as a sphere of roughly uniform density. Shortly thereafter, heat from the decay of radioactive elements caused much of the Earth to melt. This allowed the heavier material to sink to- ward the center of the Earth, forming the core. Today, we can picture the Earth as made up of a core of radius 3570 km and density 10.3 g/cm3 surrounded by a mantle of density 4.50 g/cm3 extending to the surface of the Earth (radius 6370 km). We ignore the crust of the Earth. Calculate the fractional change in the length of the day due to the formation of the core.

Amit Saxena , 9 Years ago

Grade upto college level