# 1 MJ.

## Presentation on theme: "1 MJ."— Presentation transcript:

1 MJ

1 MJ = J = Nm = kg m2 /s2 = kg m2 /s2

= 9810000 kg m2 /s2 1 MJ Potential Energy 1 MJ = m g h = 100 9.81 h
1 MJ = Energy to lift 100 kg man ~1000 m

Food and Fuels = 3 kg Celery
1 MJ Food and Fuels = 3 kg Celery

Food and Fuels = 3 kg Celery = 1 kg Spinach
1 MJ Food and Fuels = 3 kg Celery = 1 kg Spinach

Food and Fuels = 3 kg Celery = 1 kg Spinach = 36 g Coal
1 MJ Food and Fuels = 3 kg Celery = 1 kg Spinach = 36 g Coal

Food and Fuels = 3 kg Celery = 1 kg Spinach = 36 g Coal = 33 g Butter
1 MJ Food and Fuels = 3 kg Celery = 1 kg Spinach = 36 g Coal = 33 g Butter

1 MJ = 3 kg Celery = 1 kg Spinach = 36 g Coal = 33 g Butter = 26 g Oil
Food and Fuels = 3 kg Celery = 1 kg Spinach = 36 g Coal = 33 g Butter = 26 g Oil

1 MJ = 3 kg Celery = 1 kg Spinach = 36 g Coal = 33 g Butter = 26 g Oil
Food and Fuels = 3 kg Celery = 1 kg Spinach = 36 g Coal = 33 g Butter = 26 g Oil = 20 g Gas

1 MJ = m (cp T + L) = m (4186/1000000) x 80 + 2.5) = m ( 0.33 + 2.5)
Heat Energy = m (cp T + L) = m (4186/ ) x ) = m ( ) = 2.83 m = Energy to boil 0.35 kg of water

1 MJ

1 MJ = 1/3.6 kWh = 0.28 kWh = 0.28 kW for 1 hour = 280 W for 1 hour
Electricity = 1/3.6 kWh = 0.28 kWh = 0.28 kW for 1 hour = 280 W for 1 hour = 3 light-bulbs for 1 hour

1 MJ

Metabolic Rates Walking for 1 hour
1 MJ Metabolic Rates Walking for 1 hour

1 MJ

1 MJ