7. The dwarf planet Pluto has a mean distance from the Sun of 5.87Å~1012
m. What is its orbital period of Pluto
around the Sun in years?
246 years

Kassaberastosa maser tasol

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.