Dear student,
Following are some of the applications of Charles' Law which states that when pressure remains constant the volume and temperature are directly related to each other
1.Rising of hot air ballons when the tenperature increases the volume of gas increases causing the hot air to rise up
2. The tyres burst when driving on a highway on hot summer days. . on summer days when the temperature is high it causes the air in the tyre to expand and thereby bursting the tyres , Therefore it is advisable to keep the tyres a little low on pressure when on a high way,