Did you try looking it up ?
Its actually C. I did the question on USA test prep and it said the correct answer was C.
Answer:
most commonly occurs because of the frequent pumping of water from the ground.
Explanation:
The answer to this question is The first option, Or what I should say "A.Thermal"
Your welcome!
Answer:
ma+mgsinh0+f=F∴(25)(0.75)+(25)(10)sinh0+μkN=F∴18.75+(250)(0.6h)+μk(mgcosh0=F⟹18.75+150+μk((25)(10)(0.76))=500∴168.75+μk(190)=500⟹μk(190)=331.25⟹μk=1.74
Explanation:
