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1 MJ = 1000000 J = 1000000 Nm = 1000000 9.81 kg m 2 /s 2 = 9810000 kg m 2 /s 2.

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Presentation on theme: "1 MJ = 1000000 J = 1000000 Nm = 1000000 9.81 kg m 2 /s 2 = 9810000 kg m 2 /s 2."— Presentation transcript:

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2 1 MJ

3 = J = Nm = kg m 2 /s 2 = kg m 2 /s 2

4 1 MJ = kg m 2 /s 2 Potential Energy 1 MJ = m g h = h 1 MJ = Energy to lift 100 kg man ~1000 m

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6 1 MJ Food and Fuels = 3 kg Celery

7 1 MJ Food and Fuels = 3 kg Celery = 1 kg Spinach

8 1 MJ Food and Fuels = 3 kg Celery = 1 kg Spinach = 36 g Coal

9 1 MJ Food and Fuels = 3 kg Celery = 1 kg Spinach = 36 g Coal = 33 g Butter

10 1 MJ Food and Fuels = 3 kg Celery = 1 kg Spinach = 36 g Coal = 33 g Butter = 26 g Oil

11 1 MJ Food and Fuels = 3 kg Celery = 1 kg Spinach = 36 g Coal = 33 g Butter = 26 g Oil = 20 g Gas

12 1 MJ Heat Energy = m (c p T + L) = m (4186/ ) x ) = m ( ) = 2.83 m = Energy to boil 0.35 kg of water

13 1 MJ

14 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

15 1 MJ

16 Metabolic Rates Walking for 1 hour

17 1 MJ

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