Astar with the mass (m=2.0×1030kg) and size (r=3.5×108m) of our sun rotates once every 30.0 days. after undergoing gravitational collapse, the star forms a pulsar that is observed by astronomers to emit radio pulses every 0.200 s . by treating the neutron star as a solid sphere, deduce its radius.

Explanation:

Using the angular formulas can determine the radius using both values neutron star and the the knowing star so

I=Inertia of the star

w=angular velocity

Notice the angular velocity determinate by the time and the Inertia have the radius value so

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.