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Q. Gasoline's volume expansion coefficient is 0.00096?C-1. How many extra kilograms of gasoline are obtained when fifteen gallons of gasoline are bought at 0?C rather than at 18?C (tempera- ture at the filling station)? Answer in units of kg.

Q. A projectile is launched from level ground. When it lands, its direction of motion has rotated clockwise through 60 degrees. What was the launch angle?

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