Les In una giornata d'inverno lasciamo all'aperto una bot- tiglia da 1,50 L, chiusa, che contiene aria alla pressione
di 103 kPa. La bottiglia contiene 4,22 x 1022 molecole di
azoto e ossigeno (massa molare media 28 g) e il sistema
formato da queste molecole può essere considerato un
gas perfetto.
Calcola l'energia cinetica media delle molecole dovuta
al loro spostamento nella bottiglia. ro
Calcola la temperatura dell'aria contenuta nella bottiglia.

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min

answeralert drivers who drift off the road;