If a person's heart rate is 75 beats / min, his heart will deliver about 8 * 10 ^ - 5m ^ 3 of blood for each beat; his blood pressure (which can be regarded as the pressure of blood when his heart beats) is 1.5 * 10 ^ 4pa on average, so as to estimate the average power of his heart beating | Math enthusiast | Mathematical art

If a person's heart rate is 75 beats / min, his heart will deliver about 8 * 10 ^ - 5m ^ 3 of blood for each beat; his blood pressure (which can be regarded as the pressure of blood when his heart beats) is 1.5 * 10 ^ 4pa on average, so as to estimate the average power of his heart beating

Ha ha, our teacher has talked about this problem. Well, share it,
First calculate the jump time t: 60 / 75 = 0.8s
Then the work formula is used to calculate: w = FL = PSL = PV (where p is the pressure, s is the area under force, PS is the pressure, and the multiplication of S and l is the volume V)
Finally, the formula of power is obtained: average power P = w / T = FL / T = PV / T
The pressure and volume problems are given out, which are 1.5 * 10 ^ 4pa and 8 * 10 ^ - 5m ^ 3 respectively. The calculation will be given to you, and I will not
That's all. It's not hard. Come on!

RELATED INFORMATIONS

1. The normal heart pumps about 80ml of blood in one beat, and the average pressure of blood flow in one beat is 1.6 * 10 ^ 4pa Suppose that the heart beats 70 times per minute, how many watts can the average power of the normal heart to promote blood flow be calculated?
2. When the depth of sea water increases by 10 m, the pressure will increase by 1.03 times 10 to the fifth power PA, In the Mariana Trench of the Pacific Ocean, the scientists found a flat fish about 30 cm long 1) The density of seawater? 2) the seawater pressure on the deep fish in the trench? 3) if this kind of fish can be fished, can it be cultured? Explain the reason, (g = 10 / kg)
3. If someone's heart beats 75 times per minute, the systolic blood pressure is 1.8 * 10 ^ 4pa, and the average output of blood is 70ml, what is the average power of heart contraction Please answer quickly If someone's heart beats 75 times per minute, the systolic blood pressure is 1.8 * 10 ^ 4pa, and the average output of blood is 70ml, what is the average power of heart contraction
4. [- 10 cubic] quartic * 10 quadratic
5. Find the square of 3 × 1 / 3 power of 5 × 2 / 3 power of 7
6. To the 10th power of 0.25 * (2) to the 20th power? To the 4th power of 2.5 * (16) to the 2nd power?
7. A person's normal heartbeat is 70 times per minute, how many times a year? This result is expressed by scientific counting method. A normal person can have a heartbeat several times in his life More than 100 million times
8. The average heart rate of a normal person is about 70 beats per minute. How many beats per month? (expressed by scientific counting method, 30 days per month) Reminder: expressed by scientific counting method, a month is calculated as 30 days
9. Using the square difference formula to calculate 2006 times 2008 minus 2007^ 2007^2
10. The final question of the first mathematics midterm paper in 2008-2009 Better have an answer
11. If a person's heart rate is 75 beats per minute and 80 ml of blood is delivered per beat, his blood pressure (which can be regarded as the average pressure of blood delivered by the heart) is 1.5 × 104 PA, based on which the average power P of the person's heart beating work can be estimated=______ W. One hour's work of this person's heart is equivalent to lifting a 1kg object high______ m．
12. Given that the average of x1, X2, X3 is. X, then the average of 3x1 + 5, 3x2 + 5, 3x3 + 5 is______ ．
13. As shown in the figure, the side length of a square is increased by 14. The perimeter of the new square is 60 cm. How many cm is the side length of the original square?
14. If a, x1, X2, X3, B and a, Y1, Y2, Y3, Y4, Y5, B all form an arithmetic sequence, find (x3-x1) / (y3-y1) Process details
15. Is the perimeter of a square proportional to the side? Is the area proportional to the perimeter? Why?
16. (cosx) ^ 4 (SiNx) ^ 4 (sinxcosx) ^ 2 / (SiNx) ^ 6 (cosx) ^ 6 2 (sinxcosx) ^ 2 reduction Urgent, online, etc
17. The sum of the diameters of the two circles is 10 cm. If the radius of one circle is RCM, the perimeter of the other circle is? Cm
18. Solving the problem of scientific density calculation in grade two of junior high school The hollow copper ball with a volume of 20 cm & sup 3; has a mass of 89 g. when the hollow part of the ball is filled with a certain liquid, the total mass is 225 G Both the process and the answer!
19. If the length of one side of a square increases by 2cm and the length of the other side decreases by 2cm, how does its area change? Why
20. Application questions 1. What's the angle between the hour hand and the minute hand at 3:5? 2. What's the angle between the hour hand and the minute hand at 3:50? 3. After 4 o'clock, how long does it take for the minute hand to coincide with the hour hand for the first time? Well meaning elder brother and elder sister, please help younger brother. Younger brother's share is gone,