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Q. A 515-g block slides along a frictionless surface at a speed of 0.350 m/s. It runs into a horizontal massless spring with spring constant 56-N/m that extends outward from a wall. It compresses the spring, and then is pushed back in the opposite direction by the spring, eventually losing contact with the spring.

Q. A balloon of volume 3.00 m3 contains argon gas at a pressure of 6.00 times 105 Pa and room temperature (20 degrees C). What is the total internal energy of the gas?

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