Ahiker begins a trip by first walking 17 km southeast from her base camp. on the second day, she walks 49.7 km in a direction 66.7 ◦ north of east, at which point she discovers a forest ranger’s tower. determine the y component of the total displacement.

Total displacement =36.63 m

Explanation: For the y component of the displacement only the north and south displacement is to evaluated

The displacement in the south can be taken as negative

The first displacement of hiker is 45 degree in 4rth quadrant as described in the question as "south East"

if we take the distance 17 km as hypotenuse then to find y component we will find the perpendicular

similarly the angle for the second displacement in the north is given as 66.7 degree and we will use the same approach

This is in the first quadrant hence the displacement is positive

Total displacement =d1+d2

Total displacement =36.63 m in the north

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

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