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An object is 12cm to the left of a lens with f=20cm. a secondlens with f=4cms is 2cms to the right of the first lens. find theimage distance as measured from the second lens?
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In chemical changes, new substances are formed. Do the atoms involved actually change? If not, what has changed? How would you help your students visualize this?
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Question: Sam's job at the amusement park is to slow down and bring to a stop the boats in the log ride. If a boat and its riders have a mass of 800kg and the boat drifts in at 1.4m/s how much work does Sam do to stop it ...
Question: a) What is the potential difference V ad in thecircuit? b) What is the terminal voltage of the 4V battery? c) A battery with emf 10.3V and internal resistance .5ohm isinserted in the circuit d with its negativ ...
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