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Q. Water travelling at a speed of 0.10 m/s enters a pipe with a 1.00 cm radius. At what speed does it emerge from a section of pipe with the radius of 1/2cm?

Q. A balloon of volume 4.20 m3 contains argon gas at a pressure of 6.60 x10^5 Pa and room temperature (20 C). What is the total internal energy of gas?

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