Smoking tobacco is bad for your circulatory health. in an attempt to maintain the blood's capacity to deliver oxygen, the body increases its red blood cell production, and this increases the viscosity of the blood. in addition, nicotine from tobacco causes arteries to constrict. for a nonsmoker, with blood viscosity of 2.5×10^−3pa⋅s, normal blood flow requires a pressure difference of 8.0 mm of hg between the two ends of an artery. if this person were to smoke regularly, his blood viscosity would increase to 2.7×10^−3pa⋅s, and the arterial diameter would constrict to 90 % of its normal value.

what pressure difference would be needed to maintain the same blood flow in mm of hg?

b mirrors submit a iisner? e. for which optical devices does d sometimes have a positive value? o a a and b o b. a and c o c. b and d 0 d. b and cb

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.

a.   mass number from atomic number

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y