So I end up having three equations...
1) Mtotal = Vtotal * Dtotal
2) Mcore = Vcore * Dcore
3) Mmantle = Vmantle * Dmantle
1) I have the V because I am given the radius and can also figure out the M because I am given the D.
2 & 3) I only have both D's and nothing else.
I also know...
Homework Statement
Given the density of the mantle to be 4700 kg/m^3, the density of the core to be 9700 kg/m^3, the radius of the planet to be 6050 km and the mean density to be 5240 kg/m^3, find the thickness of the mantle.
Homework Equations
I tried using the formula M = D * V and V...
By using this formula: (change in wavelength / true wavelength) x speed of light
= ( (6.00031-5.99969) / 6) x 300000
= 31 km/s <--Is this the orbital velocity?
What other formulas are needed? M = rv2/G ?
Problem:
Suppose a spacecraft is in a circular orbit about a distant planet. The spacecraft emits a continuous radio signal with a wavelength of 6 m. You observe the signal's wavelength to vary between 5:99969 m and 6:00031 m; the period of variation (i.e., the full period of the signal) is...