Physics, 15.07.2019 23:10 deontehiggins42
If you are lying down and stand up quickly, you can get dizzy or feel faint. this is because the blood vessels don't have time to expand to compensate for the blood pressure drop. if your brain is 0.4 m higher than your heart when you are standing, how much lower is your blood pressure at your brain than it is at your heart? the density of blood plasma is about 1025 kg/m3 and suppose your maximum (systolic) pressure of the blood at the heart is 119.8 mm of hg (note that 120 mm of hg = 16 kp = 1.6 x 104 n/m2). since most doctors still use mm of hg, give your result in those units.
Answers: 3
Physics, 22.06.2019 15:50
An object with initial temperature 130 ∘ f is submerged in large tank of water whose temperature is 50 ∘ f . find a formula for f ( t ) , the temperature of the object after t minutes, if the cooling constant is k = − 0.2 . remember newton's law of cooling (the rate of change of temperature with respect to time is equal to k times the difference between the temperature of the object and the surrounding temperature) ! : )
Answers: 1
Physics, 22.06.2019 16:00
The frequency of the fundamental of the guitar string is 320 hz. at what speed v do waves move along that string?
Answers: 2
Physics, 22.06.2019 16:00
At what time will the interfering waves have an amplitudeof zero?
Answers: 1
If you are lying down and stand up quickly, you can get dizzy or feel faint. this is because the blo...
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