The term 'latent heat' was introduced by MCQ with Answer and Explanation

Explanation:
Ice displaces water equal to its weight. When melted, it occupies exactly that volume. So level unchanged. Classic question.

Explanation:
An isochoric process is a thermodynamic process in which the volume of the closed system remains constant (delta V = 0). Because there is no change in volume, the system does zero pressure-volume work (W = Pdelta V = 0). According to the first law of thermodynamics, any heat added goes entirely into increasing the internal energy. Isobaric is constant pressure; isothermal is constant temperature.

Explanation:
v_max = ωA = (2π/T) A = (2π/2)×5 = 5π cm/s.