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Q. A shotgun blast of 140 decibels occurs with humidity of 70% and temperature of 50 degrees. What is the decibel level at 100 yards away? At 200 yards? At 300?

Q. A spring is suspended from a ceiling. An 8.06 kilograms object is attacked to the spring which causes it to stretch out an additional 0.2 meters. Calculate the spring constant k.

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