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A slide projector has a converging lens whose focal length is103.00 mm.
1. How far from the lens should the screen be located if a slide is placed 105 mm from the lens?
2. If the slide measures 21.0 mm× 37.0 mm, what are the dimensions (in mm) of its image?
Width
Height
Three successive resonance frequencies of an air column are 75, 125, and 175 Hz, What is the fundamental (lowest) frequency
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