if a car is driven 4 miles east and then 3 miles nort what is the distance and displacement of the trip​

Explanation:

Distance is scalar, displacement is vectoral

Distance 3 + 4 = 7 miles

Displacement √(3² + 4²) = 5 miles

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.