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An engraver uses a magnifying glass (f = 8.80 cm) to examine some work, as in the drawing. The image he sees is located 20.0 cm from his eye, which is his near point.
(a) What is the distance between the work and the magnifying glass? (b) What is the angular magnification of the magnifying glass?
(a) will be in centimeters and
(b) has no units. Thanks!
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 440-g sample of silver at an initial temperature of 85°C is placed in the water. Calculate the mass of the aluminum cup
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orville walks 318 m due east. He then continues walking along the straight line, but in a different direction, and stops 164 m northeast of his starting point. How far did he walk during the second portion of trip and in what direction.
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A long vertical wire carries an unknown current. Coaxial with the wire is a long, thin, cylindrical conducting surface that carries a current of 31.7 mA upward, what is the current (in A) in the wire
Why is it better for some purposes to use a medium size telescope on a mountain instead of a telescope in space?
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