A syringe is used to compress a sample of air. The tip of the syringe is sealed so that no air can escape.
Initially, the volume of the trapped air is 60 cm360\text{ cm}^360 cm3 and its pressure is 1.01×105 Pa1.01 \times 10^5\text{ Pa}1.01×105 Pa. Calculate the pressure of the air when the plunger is pushed in and the volume decreases to 15 cm315\text{ cm}^315 cm3.
State an assumption you have made about the air in the syringe.
When the syringe is compressed rapidly, the syringe and the air inside become warm. Suggest two reasons why this happens.
A gardener uses a manual pump to lift water from a drum.
State the relationship between work done, force, and distance moved.
Calculate the work done in lifting a mass of 3.50 kg3.50\text{ kg}3.50 kg of water through a height of 2.40 m2.40\text{ m}2.40 m. [Take g=10 N/kgg = 10\text{ N/kg}g=10 N/kg]
