Exercício de Altura e Sombra
Exercício:
1-Uma pessoa de 1,9 m de altura está em pé ao lado de um prédio. A sombra do prédio projetada pela luz solar é de 90 m enquanto a da pessoa é de 9 m. Qual a altura do prédio?
2-. (UFRJ) No mundo artístico as antigas “câmaras escuras” voltaram à moda. Uma câmara escura é uma caixa
fechada de paredes opacas que possui um orifício em uma de suas faces. Na face oposta à do orifício fica preso
um filme fotográfico, onde se formam as imagens dos objetos localizados no exterior da caixa, como mostra a
figura.
Suponha que um objeto de 3m de altura esteja a uma distância de 5m do orifício, e que a distância entre as faces
seja de 6cm.
Calcule a altura h da imagem.
3. Em um dado instante uma vara de 20,0m de altura, vertical, projeta no solo, horizontal, uma sombra de 2m de comprimento. Se a sombra de um prédio próximo, no mesmo instante, tem comprimento de 50m, qual a altura do prédio?
Informações Adicionais:
1-Uma pessoa de 1,9 m de altura está em pé ao lado de um prédio. A sombra do prédio projetada pela luz solar é de 90 m enquanto a da pessoa é de 9 m. Qual a altura do prédio?
2-. (UFRJ) No mundo artístico as antigas “câmaras escuras” voltaram à moda. Uma câmara escura é uma caixa
fechada de paredes opacas que possui um orifício em uma de suas faces. Na face oposta à do orifício fica preso
um filme fotográfico, onde se formam as imagens dos objetos localizados no exterior da caixa, como mostra a
figura.
Suponha que um objeto de 3m de altura esteja a uma distância de 5m do orifício, e que a distância entre as faces
seja de 6cm.
Calcule a altura h da imagem.
3. Em um dado instante uma vara de 20,0m de altura, vertical, projeta no solo, horizontal, uma sombra de 2m de comprimento. Se a sombra de um prédio próximo, no mesmo instante, tem comprimento de 50m, qual a altura do prédio?
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