1 MJ

1 MJ

= 1000000 J

= 1000000 Nm

= 1000000 9.81 kg m2 /s2

= 9810000 kg m2 /s2

1 MJ

= 9810000 kg m2 /s2

Potential Energy

1 MJ = m g h = 100 9.81 h

1 MJ = Energy to lift 100 kg man

~1000 m

1 MJ

Food and Fuels

= 3 kg Celery

1 MJ

Food and Fuels

= 3 kg Celery

= 1 kg Spinach

1 MJ

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

= 33 g Butter

1 MJ

Food and Fuels

= 3 kg Celery

= 1 kg Spinach

= 36 g Coal

= 33 g Butter

= 26 g Oil

1 MJ

Food and Fuels

= 3 kg Celery

= 1 kg Spinach

= 36 g Coal

= 33 g Butter

= 26 g Oil

= 20 g Gas

1 MJ

Heat Energy

= m (cp T + L) = m (4186/1000000) x 80 + 2.5) = m ( 0.33 + 2.5) = 2.83 m

= Energy to boil 0.35 kg of water

1 MJ

1 MJ

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

1 MJ

Metabolic Rates

Walking for 1 hour

1 MJ

1 MJ