Blood pressure in Argentinosaurus. (a) If this long-necked, gigantic sauropod had a head height of 18 m and a heart height of 8.0 m, what (hydrostatic) gauge pressure in its blood was required at the heart such that the blood pressure at the brain was 80 torr (just enough to perfuse the brain with blood)? Assume the blood had a density of `1.06 xx 10 kg//m^(3)`. (b) What was the blood pressure (in torr or mm Hg) at the feet?

Explanation

To solve the problem regarding the blood pressure in Argentinosaurus, we will break it down into two parts as stated in the question.

### Part (a): Gauge Pressure at the Heart

1. **Identify the Given Values:**
- Height of the head (h_head) = 18 m
- Height of the heart (h_heart) = 8 m
- Height difference (h) = h_head - h_heart = 18 m - 8 m = 10 m
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