When you urinate, you increase pressure in your bladder to produce the flow. For an elephant, gravity does the work. An elephant urinates at a remarkable rate of 0.0060 m3 (a bit over a gallon and a half) per second. Assume that the urine exits 1.0 m below the bladder and passes through the urethra, which we can model as a tube of diameter 8.0 cm and length 1.2 m. Assume that urine has the same density as water, and that viscosity can be ignored for this flow.
1) What is the speed of the flow? It is 1.2 m/s
2) If we assume that the liquid is at rest in the bladder (a reasonable assumption) and that the pressure where the urine exits is equal to atmospheric pressure, what does Bernoulli's equation give for the pressure in the bladder? (In fact, the pressure is higher than this; other factors are at work. But you can see that no increase in bladder pressure is needed!)
Answers: 3
Physics, 22.06.2019 16:20, ceasar6071
The energy equivalent of the rest mass of an electron is
Answers: 1
Physics, 23.06.2019 00:30, gamallopatty
What is the coldest temperature ever recorded in san antonio?
Answers: 1
Physics, 23.06.2019 06:00, njones58emailtjcedu
What is offspring? why does a longer life span mean a higher chance of producing offspring?
Answers: 3
When you urinate, you increase pressure in your bladder to produce the flow. For an elephant, gravit...
Mathematics, 12.01.2021 17:30
Mathematics, 12.01.2021 17:30
Mathematics, 12.01.2021 17:30
Mathematics, 12.01.2021 17:30
Mathematics, 12.01.2021 17:30
English, 12.01.2021 17:30