9 A person on a cruise ship is doing laps on the promenade deck. On
one portion of the track the person is moving north with a speed of
2.8 m/s relative to the ship. The ship moves east with a speed of
14 m/s relative to the water. What is the direction of motion of the person
relative to the water?
11.3 degree North East
(
O
12.3 degree North East
(
O
13.3 degree North East
14.3 degree North East
( O​

radiation warms things up temp rises convection currents air circ windy weather

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

it would be c. predictability

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach