Determine the magnitude of the gravitational force mars would exert on man if he was on the surface of mars. the mass of the man is 68.0 kg . the mass of the mars is 6.42×1023kg and its radius is 3396 km

252.6 N

Explanation:

To calculate the force between two bodies, we employ Newton's Law of gravitation which mathematically, tells us that the force of gravity between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distance of separation between their centers.

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