5) A syringe with a circular cross section has a body diameter of 9.00mm. If a nurse applies a force of 30.0N to the syringe's piston, how much pressure is applied to the piston and the fluid within the syringe?

6) Assume the density of air is a uniform 1.29 kg/m3. What would be the pressure on the roof of One World Trade Center (tallest building in the United States) which is 541 m high?

7) .A syringe with a circular cross section has a body diameter of 9.00mm. The diameter of the output hole is only 2.00 mm. If the piston is depressed at a speed of 1.65 m/s, how fast does the fluid exit the output hole?

8) A hydraulic press has an input diameter of 2.0 cm. If 1.0 x 102N of force can be applied to the input piston and a force of 1.6 x 103N is required at the output piston, what should be the diameter of the output piston in centimeters? Ignore any difference in height between the pistons.

9) The coefficient of linear expansion of gold is 1.4 x 10-6(C°)-1. If a gold cube, 5.0 cm on edge, was cooled from 60°C to 10°C, what would be its volume change in cm3?

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