Um objeto é colocado a 30 cm de uma lente delgada convergente cuja distância focal é 20 cm. Qual a distância da imagem formada por esse objeto até a lente?

What is created when solids,liquids,an gases mix with one another

Difference between series and parallel circuits

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up