Solving Density Problems: Neutron Stars Homework

[drewsteriam]

Homework Statement

Alright, this chapter in my AP Physics class has been giving me all sorts of problems, so need tons of help. Here is the first problem:
Neutron stars consist only of neutrons and have unvelievably high densities. A typical mass and radius for a neutron star might be 2.7 x 10^28 kg and 1.2 x 10^3 m. (a) Find the density of such a star. (b) If a dime (V=2.0 x 10^-7 meters cubed) were made from this material, how much would it weigh (in pounds)?

Homework Equations

I'm not sure what equations are relevant, but I will give it a try: P+.5p(v)^2+pgy=p+.5pgy

The Attempt at a Solution

I don't really know any of this so I don't know where to start. Any help would be appreciated, Thanks.

 

[tyco05]

Density = mass/volume

2.2 pounds = 1 kg

 

[drewsteriam]

Thanks, that was a lot simpler than I thought it would be.