David left his basketball outside overnight. At 1am the volume of air within the ball was 1.2m^3 and the outdoor temperature was 5 degrees Celsius. At 3am the temperature was -7 degrees Celsius. What is the volume of air inside the ball at 3am?
For this question we solve it using Charles’ Law. Charles’ law states that the product of volume and temperature gives a constant value. This is illustrated by VT=C. This means that volume and temperature are inversely proportional to each other. In simpler terms this means that as volume decreases the temperature will increase and vice versa. We can use this to solve questions like the above. It is important to note in questions involving Charles’ law that temperature MUST be in Kelvin instead of degrees Celsius. To convert degrees to kelvin we add 273.V1/T1= V2/T21.2/(5+273)=V2/(-7+273)1.2/278= V2/266V2=(1.2/278) x 266V2=1.148201V2=1.14 m3
SK
Related Physics GCSE answers
All answers ▸A transformer has an input voltage of 4V, an output voltage of 8V and 50 turns on its primary coil. Assuming 100% efficiency, find the number of turns on the secondary coil.
A man decides to shoot a rifle whilst on a wheelchair. Explain in terms of conservation of momentum what happens to the man as the shot is fired.
If a student uses an electric kettle connected to a 230V mains power supply, with a heating power of 1.8kW. Assuming negligable losses, answer the following: a) find the current in the kettle b) find the total energy transferred in 2 minutes of operation
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.