Переклад перекладу - ви гарячі?
"Гарячі" is used for objects, like food and plates and cars. "жарко" is used for people and animals.
You also can say it about the weather: "на дворі жарко - it is hot outside". Also it is often use to describe the people's character: "ці дівчата дуже гарячі - these girls are very hot".
That too, thanks.