Suppose that the hatch on the side of a mars lander is built and tested on earth so that the internal pressure just balances the external pressure. the hatch is a disk 50.0 cm in diameter. when the lander goes to mars, where the external pressure is 650 n/m^2, what will be the net force (in newtowns and pounds) on the hatch, assuming that the internal pressure is the same in both cases? will it be an inward or outward force? answer= 19.8 kn, 4440 lb. outward force. explain how to get these answers. equation in textbook : fnet=(p2-p1)a

Explanation:

On Earth the atmospheric presure is . This will be the pressure inside the lander. Outside, the pressure on Mars will be . This means that the net force will be outward (since inside the pressure is higher) and, since the area of the hatch is , of value:

Since 1lb in weight  is equal to 4.45N, we can write:

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