Lesson 5

• Physics
• Middelbare school
• vwo
• Leerjaar 3

Chapter 3 — Energy

This lesson

•  Recap
• Going over section 1
• Discussing the homework
• The power of a wind turbine 
• Section 2

Recap

What are all the energy sources in the Netherlands?

Energy sources used in the Netherlands

• Fossil fuels
  
• Biomass
• Wind 
• Nuclear fission
• Solar
• Geothermal

Energy sources used in the Netherlands

• Fossil fuels  (91.4% — 2018) (2022 — ?)
  
• Biomass (4,5%)
• Wind (1.7%)
• Nuclear fission (1.4%)
• Solar (0.6%)
• Geothermal (0.2%)

Energy sources used in the Netherlands

• Fossil fuels  (91.4% — 2018) (2022 — 83%)
  
• Biomass (4,5%)
• Wind (1.7%)
• Nuclear fission (1.4%)
• Solar (0.6%)
• Geothermal (0.2%)

Going over Section 1

Discussing the homework

Exercise 1, 2, 3, 4 and 7

The power of a wind turbine

The power of a wind turbine

P=k⋅(v)​3​​

P: Power — Unit: Watt (W)

k: A constant — no unit

v: Speed of the wind — meters / second (m/s)

Example exercise

Example exercise

working on exercises

• Try section 1 exercise 10 — See how far you get
  
• Read section 3.2 — Take your time, study it proeprly
  
• Homework: Exercise 1, 2, 3 and 6

Note: The book estimates that 1 ml of water has a mass of roughly 1 gram