If we assume a temperature of 20ºc and the blood interfacial surface tension is similar to water interfacial surface tension, the diameter of the capillary tube should be 0.933mm.

Step-by-step explanation:

The Jurin law describes the height a fluid can reach in a capillary tube. This law can be written as:

$H=\displaystyle\frac{2\gamma cos(\theta)}{\rho gr}$

where γ is the interfacial surface tension, θ is the contact angle with the fluid, ρ is the fluid density, g is the gravity acceleration and r is the tube radius.

If we assume that the interfacial surface tension of blood and water are almost the same, γ=0,0728 N/m at 20ºc. Therefore the diameter of the tube will be:

$D=2r=\displaystyle\frac{4\gamma cos(\theta)}{\rho gH}=0.933\cdot 10^{-3}m$

4 0

2 years ago

If a theater holds 1800 and sells 1/3 of its seats how many tickets does it sell

kozerog [31]

Hey!

A theater holds 1,800 seats. It sells 1/3 of it. That means you have to find 1/3 of 1,800

$\frac{1800}{1} \times \frac{1}{3} = \frac{1800}{3} = 600$

<em>That means the theater sells 600 seats.</em>

$\framebox{Answer = 600 seats}$

7 0

3 years ago

What is 3/5+3/8 in simplest form

schepotkina [342]

The answer would be 39/40.

1. Find the LCD of both of the fractions (LCD = 40)

2. Make the denominators the same as LCD (The LCD would be 40)

3. Simplify (24/40 + 15/40)

4. Join the denominators (24 + 15/40)

5. Simplify (39/40)

In decimal form its 0.975.

5 0

3 years ago