# Geography homework help

a) A planet of radius R has a core of radius R/2 which has a uniform density ρc. The mantle also has a uniform density ρm and the two densities are related by ρc = yρm

Determine y if C/MR^2 = 1/3.

b) Assume the average density of the entire Earth ρE = 5515 kg/m3 . Using the result you found for y, derive the average densities of the core and mantle, ρc and ρm, respectively. For comparison, the volume-averaged densities on Earth are ρm = 4480 kg/m3 and ρc = 10640 kg/m3 . Comment on what the main reason is for why the approximate values are different from the observed average densities.

### Save your time - order a paper!

Get your paper written from scratch within the tight deadline. Our service is a reliable solution to all your troubles. Place an order on any task and we will take care of it. You won’t have to worry about the quality and deadlines

Order Paper Now

ORDER A PLAGIARISM-FREE PAPER NOW

a) A planet of radius R has a core of radius R/2 which has a uniform density ρc. The mantle also has a uniform density ρm and the two densities are related by ρc = yρm

Determine y if C/MR^2 = 1/3.

b) Assume the average density of the entire Earth ρE = 5515 kg/m3 . Using the result you found for y, derive the average densities of the core and mantle, ρc and ρm, respectively. For comparison, the volume-averaged densities on Earth are ρm = 4480 kg/m3 and ρc = 10640 kg/m3 . Comment on what the main reason is for why the approximate values are different from the observed average densities.

##### "Our Prices Start at \$11.99. As Our First Client, Use Coupon Code GET15 to claim 15% Discount This Month!!" 