Answer:
2234.63
Explanation:
Work done per cycle by the engine is calculated as;

#Since volume doesn't change in the isochoric steps, there is no work done, hence:

#For an isothermal change of state(ideal gas):

#for the expansion process:



Hence, the engine does 2234.63J per second.
Answer:
1411.8 N/m
Explanation:
From Hooke's law;
F= Ke
Where
F= force on the spring
K= force constant
e = extension
But e= 8.50 × 10^-2m
F= weight = 12.0 kg × 10 = 120 N
K = F/e = 120/8.50 × 10^-2
K= 1411.8 N/m
Answer:
Add an arrow above the symbol p to show it is a vector. Sometimes it is italicized in textbooks.
Explanation:
If the wagon travels 18.75 m, then the work done on the wagon is
(18.75 m) x (the steady force applied to the wagon all the way, in Newtons) .
The unit is Joules .