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y. y.y in the index form
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Africtionless piston-cylinder contains 50 l of saturated liquid r-134a. the piston has a mass and an area resulting in an applied pressure of 500 kpa on the refrigerant. the refrigerant is now heated until its temperature rises to 70∘c. calculate the work (in kj) done during this process.

The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?

Aball horizontally thrown from a cliff at 8m/s