Uma Câmara escura de orifício com 15 cm de profundidade produz uma determinada imagem para um objeto situado a 10 m do orifício. Qual a profundidade de uma câmara escura que, colocada a 20 m do mesmo objeto e produz uma imagem igual ao dobro da anterior? a) ( ) 30 cm b) ( ) 7,5 m c) ( ) 7,5 cm d) ( ) 30 m e) ( ) 60 m

Tafari worked one summer on a ship that set weather buoys in the ocean. he watched how one of the buoys moved in the water. describe which parts of the wave would cause the buoy to bob up and down. which wave property determined how fast the buoys bobbed in the water? he observed that when the wind blew harder, the ocean waves were larger, and the buoys moved away from the ship. what effect, if any, did the waves have on how far the buoys moved? explain your answer.

Which is special about a dc circuit ? a. it has both series and parallel components b. it has only series or only parallel components c. charge moves in a single direction d. charge moves back and forth quickly

Use the illustration to describe how the electromagnetic spectrum changes as its frequency moves from radio waves to higher energy gamma waves in terms of wavelength and amplitude.