3 physics proplems

[dr:esraa]

plz ana 3andy shwayet proplems mumkn ykono sahlen bs ana msh 3arfa a7lhohom w mtla5bta gamd fa yaret lw 7d y3raf ysa3dny (
1 - the pressure of air in car tyre was measured at 7 celsius , the difference between l pressure and atmospheric pressure was 2.4 celsius ... calculate pressure inside tyre at 27 celsius ???

2 - eight gm of oxygen occupie vessel of volume 3 litres calculate its pressure given that the temp. of vessel is 22 celsius


3- the length of capillary tube is 20 cm its opened at one end it contain mercury of thread4 cms long at its middle exactly at 27 celsius it used as a thermometer ... calculate the maximum temp. that cam measured ??

kfaya dol nw w i hope en 7d ysa3dny