A ship has a mass of 40,000 kg. Its engine gives it an acceleration of 0.2 m/s2 while it travels a distance of 100 meters from rest. - What force does the engine exert on the ship? Show your calculation.

- How much work did the engine do? Show your calculation.

–Now imagine another ship with the same mass was able to cover the same distiance in less time.
- Which ship does more work? Explain your answer.

- Which ship has more power? Explain your answer.

the body's situation won't change the forces are equal opposit and on the same body

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