A typical human contains 5.00 l of blood, and it takes 1.00 min for all of it to pass through the heart when the person is resti
ng with a pulse rate of 74.0 heartbeats/ minute. on the average, what volume of blood, in (a) liters and (b) cubic centimeters, does the heart pump during each beat?
2 answers:
<em>Volume of blood, in (a) liters = 0.0675 liters and (b) cubic centimeters = 67.5 cm³</em>
<h3><em>Further explanation </em></h3>7 main quantities have been determined based on international standards, namely:
1. Length, meters (m)
2. Time, second (s)
3. Mass, kilograms (kg)
4. Temperature, kelvin (K)
5. Light intensity, candela (cd)
6. Electric current, ampere (A)
7. Amount of substance, mol (m)
The length of the principal is to indicate the distance between two points in a place
The symbol is usually expressed in l, length
Volume is a derivative quantity derived from the length of the principal
The unit of volume can be expressed in liters or milliliters or cubic meters
The conversion is
1 cc = 1 cm³
1 dm = 1 Liter
1 mL = 1 cm³
1 L = 1 dm³
From the question, 5 liters of blood passes through the heart in 1 minute
The heart beats 74 times/minute
So that the equation is easy as follows:
5 liters = 1 minute
74 beats = 1 minute
So that in 1 heartbeat there is as much blood volume as:
= 5 liters / 74 beats
= 0.0675 liters
When we convert to cm³ it becomes:
1 L = 1 dm³ = 10³ cm³
0.0675 liters = 0.0675.10³ cm³
= 67.5 cm³
<h3><em>Learn more </em></h3>
A city that uses ten billion BTUs of energy
what is the total mass in micrograms of cofactor
A vineyard has 145 acres of Chardonnay grapes.
Keywords: volume, liters, heart, beats, blood
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Explanation:
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a = 4 rad/s^2
S = 10 rev = 62.83 rad
Now we know that:
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the initial angular velocity, a is the angular aceleration and S the radians.
Replacing, we get:
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v = 1200 - 300
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p = m * v
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p = 10000 * 1200
p = 12 000 000
p = 12 *10^6 kg*m/s
Final momentum:
p = 10000 * 900
p = 9 000 000
p = 9 *10^6 kg*m/s
If we apply Newton's second law we can calculate acceleration:
F = m * a
a = F / m
a = 25000 / 10000
a = 2.5 m/s^2
Now we can use this information to calculate change of speed.
a = v / t
v = a * t
v = 2.5 * 120
v = 300 m/s
Force is being applied in direction that is opposite to a direction in which space craft is moving. This means that final speed will be reduced.
v = 1200 - 300
v = 900 m/s
Formula for momentum is:
p = m * v
Initial momentum:
p = 10000 * 1200
p = 12 000 000
p = 12 *10^6 kg*m/s
Final momentum:
p = 10000 * 900
p = 9 000 000
p = 9 *10^6 kg*m/s
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g = 9.8 m/s^2 is the acceleration due to gravity
h is the height above the water
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