Original video: https://youtu.be/dX0FZseezok
Delivered on: 20APRIL2022
This video covers a tutorial session focusing on capillary action and calculating water rise in plant xylem. We'll work through practice problems, discuss key concepts, and provide exam preparation guidance.
What you'll learn:
Capillary Action: We'll review the principles of capillary action, the ability of liquids to flow in narrow spaces without external forces like gravity.
Water Rise Calculation: Learn how to calculate the height water can rise in a capillary tube.
Problem-Solving: We'll work through several practice problems, demonstrating how to apply the formula and interpret the results.
Exam Preparation: We'll discuss effective strategies for exam preparation, including active recall, spaced repetition, and concept mapping.
Questions:
To what height would water rise in 20°C air inside xylem with the following properties:
a) Capillary diameter of 2 mm, contact angle of 30°
b) Capillary diameter of 2 μm, contact angle of 30°
c) Same as (a), but the plant is tilted 50°
d) Same as (b), but the capillary is wettable (contact angle 0°)
e) What pressure is needed to prevent water movement in (b)?
Keywords: Capillary action, water rise, plant xylem, surface tension, contact angle, liquid density, gravity, radius, calculation, tutorial
Attribution 4.0 International — CC BY 4.0 - Creative Commons
Comments