A force of 12 N gives an object acceleration 4 m/s². Mass of object is MCQ with Answer and Explanation

Explanation:
According to Gauss's Law in electrostatics, all excess charge on a conducting body resides entirely on its outer surface. Since there is no net charge enclosed within the hollow interior, the electric flux and consequently the electric field everywhere inside the hollow conducting sphere is exactly zero.

Explanation:
e = √(h₂/h₁) = √(1.25/5) = √0.25 = 0.5.

Explanation:
Refrigerant evaporates inside absorbing heat, compressed outside releasing heat, cycle repeats.