Answer:
Work = power * time
time = 20000 joules / 1000 joules / sec = 20 sec
like just try and try you gut it just trust me I'm a Wuman and you a man
Expansion work against constant external pressure: w=-pex Δ Δ V 3. The attempt at a solution . I tried following that. Because Vf>>Vi, and Vf=nRT/pex, then w=-pex x nRT/pex=-nRT (im assuming n is number of moles of CO2?). 1 mole of CaCO3 makes 1 mole of CO2, so plugging in numbers, I get 8.9kJ, although I dont use the 1 atm pressure at all
Net force would be towards the right and back (opposite direction of motion) since it's slowing down (decelerating) and turning right.
