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

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• 11. 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
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• 15. 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
• 16. 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)
• 17. 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?
• 18. 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
• 19. 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．
• 20. Given that the average of x1, X2, X3 is. X, then the average of 3x1 + 5, 3x2 + 5, 3x3 + 5 is______ ．