What is the magnification
A camera is equipped with a lens with a focal length of 30cm. When an object 2m (200cm) away is being photographed; how far from the field should the lens be placed? What is the magnification?
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A crate of 45.0 kg tools rests on a horizontal floor. You exert a gradually increasing horizontal push on it and observe that the crate just begins to move when your force exceeds 313 After that you must reduce your push to 208N to keep it moving
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