A rigid glass bulb is filled with a small amount of neon gas and sealed to study behavior under temperature changes.
The glass bulb is heated externally, causing the temperature of the neon gas to rise. Explain how this increase in temperature affects the motion of the neon atoms and the pressure they exert on the inner walls of the bulb.
In a separate experiment, a specialized micro-nozzle dispenses a tiny water droplet into a vacuum chamber, where it is heated by a high-intensity infrared laser pulse. The energy absorbed by the droplet is 0.0483 J0.0483\text{ J}0.0483 J. The mass of the water droplet is 2.50×10−8 kg2.50 \times 10^{-8}\text{ kg}2.50×10−8 kg. The specific heat capacity of water is 4200 J/kg ∘C4200\text{ J/kg }^{\circ}\text{C}4200 J/kg ∘C.
Calculate the temperature change of the water droplet, assuming it does not undergo a phase change.
37 exam-style questions on AQA GCSE Physics 3.2 Internal energy and energy transfers, covering 3.2.1 Internal energy, 3.2.2 Temperature changes in a system and specific heat capacity, and 3.2.3 Changes of state and specific latent heat. Each one has a worked solution and a mark scheme showing where the marks go.