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Tomtit [17]
3 years ago
11

The length of a brick is 30cm,breadth 20 cm and volume 9000 cm³.Find the height of the brick.

Physics
1 answer:
kondor19780726 [428]3 years ago
6 0

Answer:

l=30cm

w=20cm

v=9000cm³

h=?

according to formula

h=V/A

h=9000/(30×20)       ∴A=l×w

h=9000/600

h=15cm

mark as brainliest plz

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The amount of blood that flows through the venae cavea of the adult is 3750 ml more than that of the child.

<h3>What is flow rate?:</h3>

This is the volume of fluid flowing in a vessel per unit time.

First, we need to get the volume of blood flowing through the venae cavae of the adult and the child in 1 hour, then subtract the volume of blood for the child from that of the adult.

Using,

  • V = F'm................ Equation 1

Where:

  • V = Volume of the blood
  • F' = Flow rate
  • m = mass of blood.

For the Adult,

Given:

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  • F = 75 ml/kg

Substitute these values into equation 1

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For the child,

Given:

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  • F = 75 ml/kg

Substitute these values into equation 1 also

  • V = 75(20)
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The amount of blood that flows more through the adult than the child is

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Hence, the amount of blood that flows through the venae cavea of the adult is 3750 ml more than that of the child.

Learn more about flow rate here: brainly.com/question/21630019

5 0
2 years ago
Objects floating in the water, like buoys, only bob up and down when waves pass. Why do they not get pushed all the way to where
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Answer:

Because as the waves propagates, the particles of the medium (molecules of water) vibrates perpendicularly (upward and downward) about their mean position and not in the direction of the waves.

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The waves generated by water are transverse waves. Which are waves in which the vibrations of the particles of the medium is perpendicular to the direction of propagation of the waves.

Thus as the waves propagates, the molecules of water vibrates up and down and not along the direction of propagation of the waves. So that the floating objects do not get pushed in the direction of the waves every time.

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Answer:

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