Explain how the evaporation of a liquid causes the temperature of the remaining liquid to decrease.

(Explain within the lesson)

FM

Related Physics GCSE answers

All answers ▸

An elastic wire suspended from a workbench has a 2kg mass attached to its free end. The wire changes in length by 2cm. Calculate the elastic potential energy stored in the wire.


An electric Iron rated at 2600 W contains a steel plate, heated to a working temperature of 215°C. Room temp=18°C. Deduce whether the plate could reach its working temperature in less than 1 minute. Mass (steel plate)=890g & C (steel)=450J/kg/K


A car of mass 1000 kg is travelling at 15 m/s. The driver applies the brakes for 4 seconds, slowing the car to 5 m/s. What is the average power output of the brakes over the 4 seconds? Assume there are no other forces acting on the car.


Can you please explain the basics of electricity? I can do the maths but I don't understand what 'voltage', 'current' or 'resistance' actually is!