Daniel takes his two dogs, Pauli the Pointer and Newton the Newfoundland, out to a field and lets them loose to exercise. Both dogs sprint away in different directions while Daniel stands still. From Daniel's point of view, Newton runs due north at 4.90 m / s, but from Pauli's point of view, Newton appears to be moving at 1.70 m / s due east. What is Pauli's velocity relative to Daniel, → v PD ? Give your answer in unit vector notation, where north is taken to be the positive y - direction and east is the positive x - direction. → v PD = a ^ ı + b ^ ȷ

Explanation:

V(N, D) = 4.9 j

V(N, P) = 1.7 i

The relative velocity between the above vectors is

So x component is -1.7 m/s and y component is 4.9 m/s

The magnitude is

The unit vector is

The angle is

The angle is

e) none of the above answers are correct

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