If a current of 5A flows for 2 minutes, find the quantity of electricity transferred. 2. Find the force acting vertically downwards on a mass of 200g attached to a wire. 3. A mass of 500kg is raised to a height of 6m in 30s. Find (a) the work done and (b) the power developed. 4. An electric heater consumes 1.8 MJ when connected to a 250V supply for 30 minutes. Find the power rating of the heater and the current taken from the supply.

This physics problem tests your understanding of fundamental physical laws and their applications. The step-by-step solution below breaks down the problem using relevant equations and physical reasoning.