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TEA [102]
3 years ago
11

The average adult heart pumps about 84./mls of blood at 72 beats per minute. suppose you need to calculate how long it would tak

e the average heart to circulate 6600.ml of blood.
Physics
2 answers:
Triss [41]3 years ago
8 0
Data and interpretation:

84 ml/s of blood  at 72 beats per minute: this means that the heart pumps 84 mililiter of blood per second, at 72 beats per minute

Question: how long it takes to pump 6600 ml?

Solution:

Calculate how many times is 84 contained in 6600

6600 ml / 84 ml/s = 78.6 s

Answer:78.6s
Norma-Jean [14]3 years ago
7 0

The heart takes \boxed{79{\text{ s}}}  to circulate 6600{\text{ mL}}  of blood.

Explanation:

The average rate of blood pumping by adult heart at rate of 72  beats per minute is 84{\text{ }}{{{\text{mL}}}\mathord{\left/{\vphantom{{{\text{mL}}}{\text{s}}}}\right.\kern-\nulldelimiterspace}{\text{s}}} .

Our aim is to obtain the time required by heart to circulate 6600{\text{ mL}}  of blood.

The rate 84{\text{ }}{{{\text{mL}}}\mathord{\left/{\vphantom{{{\text{mL}}}{\text{s}}}}\right.\kern-\nulldelimiterspace}{\text{s}}}  can be referred as the adult heart pumps  84 milliliters of blood in one second at the rate of 72  beats per minute.

Consider t  be the time required for heart to pump 6600{\text{ mL}}  blood.

Since, in one second the heart pumps 84{\text{ }}{{{\text{mL}}}\mathord{\left/{\vphantom{{{\text{mL}}}{\text{s}}}}\right.\kern-\nulldelimiterspace}{\text{s}}}  and this can be written as,

84{\text{ mL}}\Rightarrow 1{\text{ second}}

In t  second the heart will pump 6600{\text{ mL}}  of blood and this can be written as,

6600{\text{ mL}}\Rightarrow t{\text{ second}}

The value of t  is calculated as shown below.

\begin{aligned}t&=\frac{{6600{\text{ mL}}\times 1{\text{ second}}}}{{84{\text{ mL}}}}\\&=\frac{{6600}}{{84}}{\text{ seconds}}\\&=78.57{\text{ seconds}}\\&\approx 79{\text{ s}}\\\end{aligned}

Therefore, it takes heart to circulate 6600{\text{ mL}}  of blood in approximately 79{\text{ s}}.

Since, blood can flow so it is called as fluids. Fluid has no fixed shape and having definite volume.

The expression for density for any fluid can be written as,

\rho=\frac{m}{V}

Here, {{\rho }}  is density, m  is the mass of the fluid and V  is the volume of fluid.

Thus, the heart takes \boxed{79{\text{ s}}}  to circulate 6600{\text{ mL}}  of blood.

Learn More:

1. Volume <u>brainly.com/question/4593217 </u>

2. Gravity <u>brainly.com/question/1675037</u>

3. Energy <u>brainly.com/question/1807873 </u>

Answer Details:

Grade: High School

Subject: Physics

Chapter: Fluids

Keywords:

Heart, pumps, 84 mL/s, blood, 72 beats, minute, long, average , circulate, 79 s, 6600 mL, fluids, property, calculate.

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