Electric car goes 0 to 160 mph in 7.63 seconds
06-06-2008, 10:43 AM
#12
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06-06-2008, 02:23 PM
#13
I'm not sure if you think it's funny because you don't think that is true so I'll give you some facts either way.
Energy per gram
object
Calories
(or Watt-hours)
joules
compared to TNT
bullet (at sound speed, 1000 ft per sec)
0.01
40
0.015
battery (auto)
.03
125
0.05
battery (rechargeable computer)
0.1
400
0.15
battery (alkaline flashlight)
0.15
600
0.23
TNT (the explosive trinitrotoluene)
0.65
2,723
1
modern High Explosive (PETN)
1
4200
1.6
chocolate chip cookies
5
21,000
8
coal
6
27,000
10
butter
7
29,000
11
alcohol (ethanol)
6
27,000
10
gasoline
10
42,000
15
natural gas (methane, CH4)
13
54,000
20
hydrogen gas or liquid (H2)
26
110,000
40
asteroid or meteor (30 km/sec)
100
450,000
165
uranium-235
20 million
82 billion
30 million
This chart didn't really come out in an easy to ready form but the first number is Calories (Watts-Hour), followed by joules, and finally compared to TNT. As stated, it is the amount of energy in one gram.
Gasoline produces 105 times more energy per gram than a rechargeable computer battery (what someone stated was used). I don't know if you are familiar with the prices of computer batteries but they are not cheap and will need to be replace as well. This is why fully electric cars haven't had a huge success yet. Sure, they are greener than regular cars but they are still more expensive in the long run. Besides, the weight of batteries needed to compare to gasoline would be astounding.
Energy per gram
object
Calories
(or Watt-hours)
joules
compared to TNT
bullet (at sound speed, 1000 ft per sec)
0.01
40
0.015
battery (auto)
.03
125
0.05
battery (rechargeable computer)
0.1
400
0.15
battery (alkaline flashlight)
0.15
600
0.23
TNT (the explosive trinitrotoluene)
0.65
2,723
1
modern High Explosive (PETN)
1
4200
1.6
chocolate chip cookies
5
21,000
8
coal
6
27,000
10
butter
7
29,000
11
alcohol (ethanol)
6
27,000
10
gasoline
10
42,000
15
natural gas (methane, CH4)
13
54,000
20
hydrogen gas or liquid (H2)
26
110,000
40
asteroid or meteor (30 km/sec)
100
450,000
165
uranium-235
20 million
82 billion
30 million
This chart didn't really come out in an easy to ready form but the first number is Calories (Watts-Hour), followed by joules, and finally compared to TNT. As stated, it is the amount of energy in one gram.
Gasoline produces 105 times more energy per gram than a rechargeable computer battery (what someone stated was used). I don't know if you are familiar with the prices of computer batteries but they are not cheap and will need to be replace as well. This is why fully electric cars haven't had a huge success yet. Sure, they are greener than regular cars but they are still more expensive in the long run. Besides, the weight of batteries needed to compare to gasoline would be astounding.
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