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29 Cards in this Set
- Front
- Back
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How much energy is contained in one can of soda?
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6E5 J
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Size of large power plant
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1 GW
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Power lost in short power lines
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7%
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US % of global energy consumption
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20%
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Doubling Time
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72/Rate
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US annual energy consumption
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100 quads
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Work days per year
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250
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Acres per square block
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10
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Horsepower -> kW
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1 to 1
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Acres to feed one person
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10
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Insolation on one square meter of Earth
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1 kW
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Surface area of a small desk
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1m2
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Distance from the Earth to the Sun
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1.5E11m
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Seconds in a year
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pE7
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Mass of an aircraft carrier
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1E8kg
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Distance from New Orleans to Detroit
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1E6m
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Mass of one liter of water
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1kg
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Radius of the Earth
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6E6m
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Thickness of a dime
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1mm
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Density of lead
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1E4kg/m3
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What is the conversion between Watt-hours, Calories, and Joules?
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1 Wh = 1 Calorie
1 kWh = 1000 Calories 1 Calorie = 4000 J 1 Wh = 3600 J |
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What is the energy per gram (in Joules) of:
rechargeable computer batteries? gasoline? U-235? |
batteries: 400 J
gasoline: 42E3 J U-235: 82E9 J |
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In terms of energy that can be delivered to a car, what is the approximate relationship between hydrogen and gasoline?
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1 kg Hydrogen = 1 gallon gasoline
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What is the approximate cost per kWh of:
coal? gasoline? electricity? AAA battery? |
coal: $0.004
gasoline: $0.09 electricity: $0.10 AAA battery: $1000.00 |
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What are the relationships between Joules, BTUs, and Quads?
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1 BTU = 1055 J
1 quad = 1E15 BTU = 1E18 J |
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What is the total US energy use per year? The total world use?
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US: 100 quads per year
World: 400 quads per year |
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What is the relationship between horsepower and kilowatts?
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1 horsepower = 1 kW
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How much power is associated with each of the following:
lightbulb? 1 sq. meter of sunlight? small power plant? large coal, gas, nuclear plant? electric power for the World? |
lightbulb: 100 W
1 sq. meter of sunlight: 1 kW small plant: 45 MW large plant: 1 GW electric power for world: 2 TW |
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1 atm is the same pressure as a column of water how many meters tall?
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1 atm = 10 m column of water
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