If you weigh 660 n on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 25.0 km? take the mass of the sun to be ms = 1.99×1030 kg , the gravitational constant to be g = 6.67×10−11 n⋅m2/kg2 , and the acceleration due to gravity at the earth's surface to be g = 9.810 m/s2 .

Explanation:

The weight of a body or object is given by the following formula:

(1)

From here we can find the mass of the body:

(2)

Where is the mass of the body and is the acceleration due gravity in an especific place (in this case the earth).

In the case of a neutron star, the weight is:

(3)

Where is the acceleration due gravity in the neutron star.

Now, the acceleration due gravity (free-fall acceleration) of a body is given by the following formula:

(4)

Where:

is the gravitational constant

the mass of the body (the neutron star in this case)

is the distance from the center of mass of the body to its surface. Assuming the neutron star is a sphere with a diameter , its radius is

Substituting (4) and (2) in (3):

(5)

(6)

Finally:

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia