What is the maximum power in Kilowatts of the appliances that can be connected safely to a 13A, 240V mains socket?

pw= VI = 13×240= 3120 watt

Explanation:

this is the law of power in the circuit pw= VI

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

a.   mass number from atomic number