A ball is thrown vertically upward with velocity 49 m/s. Maximum height (g=9.8) is MCQ with Answer and Explanation

Explanation:
At boiling point, supplied heat (latent heat) breaks intermolecular bonds for phase change, not increasing kinetic energy (temperature). Potential energy increases while kinetic energy (temperature) stays constant. Memory aid: 'Latent heat changes state, not temperature'. Conceptual question testing phase change understanding, common in competitive exams to assess microscopic interpretation.

Explanation:
Oersted found that current-carrying wire deflects compass needle.

Explanation:
Pascal's law: pressure applied to a confined incompressible fluid is transmitted equally and undiminished in all directions. Hydraulic lift, hydraulic brakes work on this principle. P = F₁/A₁ = F₂/A₂.