A resistor with R = 350 Ω and an inductor are connected in series across an ac source that has voltage amplitude 490 V . The rate at which electrical energy is dissipated in the resistor is 286 W . (a) What is the impedance Z of the circuit?
(b) What is the amplitude of the voltage across the inductor?
(c) What is the power factor?

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.

answer: a. same unit

explanation:

answerdmitry mendeleyev made a workable classification of the elements