Physics, 29.08.2019 16:30 joserms729
Apinhole camera is just a rectangular box with a tiny hole in one face. the film is on the face opposite this hole, and that is where the image is formed. the camera forms an image without a lens. (a) make a clear ray diagram to show how a pinhole camera can form an image on the film without using a lens. (hint: put an object outside the hole, and then draw rays passing through the hole to the opposite side of the box.) (b) a certain pinhole camera is a box that is 25 cm square and 20.0 cm deep, with the hole in the middle of one of the 25 cm x 25 cm faces. if this camera is used to photograph a canada goose that is 18 cm high and 1.5 m in front of the camera, how large is the image of this bird on the film? what is the lateral magnification of this camera?
Answers: 2
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Awelder using a tank of volume 7.50×10^-2 m^3 fills it with oxygen (with a molar mass of 32.0 g/mol ) at a gauge pressure of 3.30×10^5 pa and temperature of 37.1 ∘c. the tank has a small leak, and in time some of the oxygen leaks out. on a day when the temperature is 23.1 ∘c, the gauge pressure of the oxygen in the tank is 2.00×10^5 pa . a) find the initial mass of oxygen. b) find the mass of oxygen that has leaked out.
Answers: 3
Apinhole camera is just a rectangular box with a tiny hole in one face. the film is on the face oppo...
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