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Solve the following question:
Question: A heat engine extracts 55 kj from the hot reservoir and exhaust 40 kj into the cold reservoir.
(a) What are the work done?
(b) What is the efficiency?
Please show how you get the answer.
a magnifying glass is a single convex lens with a focal point length of f 14 cm. what is the angular magnification
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The acceleration of a particle along an x axisis a = 7.0t,with t in seconds and a inmeters per second squared. At t = 3.0 s, itsvelocity is +24 m/s. What is its velocity at t =8.0 s?
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