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Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius...

Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 3.7 x 1028 kg and 1.3 x 103 m. (a) Find the density of such a star. (b) If a dime (V = 2.0 x 10-7 m3) were made from this material, how much would it weight (in pounds)?

Solutions

Expert Solution

Let the mass of neutron star (M) = 3.7× kg

the radius of neutron star (R) = 1.3 × m

a) Density = Mass / Volume = M/V

where Volume (V) = 4 π /3

= 3 M/4π

substituting values

= 3× 3.7 × / 4 ×π ××

= 4.0205× kg /

The density of a star ( ) = 4.0205 × kg /

b) Given volume of dime () = 2.0 ×

Weight (W) = mg =

on substituting values

W = 4.0205 × × 2.0× × 9.8

= 7.88 × N

weight in lb = 7.88 × N × 1lb /4.448 N

= 1.7716 × lb

genius_generous answered 2 weeks ago

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