On earth, a closed box weighs 56.84 n. what would the mass of the box be on the moon?

Answer;

=5.8 kg , same as the mass on the earth's surface

Explanation;

The gravitational force on the earth surface is 9.8 N/kg

Therefore; a box weighing 56.84 N will have a mass of;

= 56.84 /9.8

=5.8 kg

The box weighs 5.8 kg on the earth surface.

On the moon's surface the box would still weigh 5.8 kg , this is because the mass of an object or a substance is constant everywhere.

-Mass of a body is constant or remains the same everywhere irrespective of the gravitational force, unlike the weight which varies depending on the pull of gravity of a place.

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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