Recent content by burnout_128

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...