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Q. an object is 30.0 cm from a concave mirror of 15 cm focal length. the object is 1.8 cm high. use the lens/mirror equation to find the image. how high is the image?

Q. A 130- baseball, moving along the axis with speed 35.0 , strikes a fence at a 45 angle and rebounds along the axis with unchanged speed Give the - and - components of its change in momentum.

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