A 2000 kg tractor, starts at the bottom of a 50. m mountain while traveling at 45 m/s. During the trip, air resistance does -100 kJ of work on the tractor, and friction does an additional -550 kJ of the work. What is the minimum amount of work the engine must do in order for the tractor to reach the top?

This is what i found on google “what happens to the bond angle when you add or remove an electron domain? the bond angle decreases as you add domains 5. can you force the atoms into new configurations by pushing atoms around? note: we can think of a bond or a lone pair of electrons as a “domain” of electrons.” i hope this you