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For exactly the same reason that you normally don't talk about how many miles wide
your kitchen is, or how many inches you drive to work. Everybody likes to use the
unit that produces the most convenient number ... the number that's easiest to work
with, write down, remember, and tell other people about.
When an electron jumps from the second energy level in a hydrogen atom to
the third one, a physicist would be perfectly correct to say that it absorbed
0.00000000000000000030281 joule of energy. But he would have a much
better chance of being understood and remembered if he calls it 1.89 electron-volts.
On the other hand, when he finishes work for the day and puts his empty coffee mug
up on the shelf in the lab, he probably has in mind that he gives it 9.8 joules of
gravitational potential energy, because that's a lot easier and more convenient
than trying to remember 61,166,762,360,000,000,000 electron-volts.
What else can I help you with?
Why do energy companies use kWh for bills instead of joules?
Energy companies use kilowatt-hours (kWh) instead of joules because kWh is a more convenient and practical unit for measuring the amount of energy consumed by households and businesses. Joules are much smaller units, requiring large numbers for typical energy usage, whereas kWh provides a more manageable figure for billing purposes.
How do the joules comparison between two different energy sources impact their efficiency and effectiveness?
The comparison of joules between two energy sources affects their efficiency and effectiveness. Energy sources with higher joules are more efficient and effective in producing energy compared to those with lower joules. This is because higher joules mean more energy can be generated from the source, leading to better performance and productivity.
Is more joules better than less joules?
It depends on the context. In some cases, more joules can mean more energy or power, which may be better. But in other cases, less joules may indicate greater efficiency or less waste, which could be preferable.
What is energy measured by?
Energy is measured in Joules in the SI system. Thermal energy can be measured in calories (1 calorie = 4.2 Joules) or BTU. In traditional units, energy is in ft.lbforce! energy is measured in calories and use to be measured in joules
How much voltage is 6 joules?
Voltage cannot be directly converted from joules, as they are different units of measurement. Joules represent energy, while voltage is a measure of electric potential difference. To determine voltage, you would need more information such as current and resistance in the circuit.
Why do energy companies use kWh for bills instead of joules?
Energy companies use kilowatt-hours (kWh) instead of joules because kWh is a more convenient and practical unit for measuring the amount of energy consumed by households and businesses. Joules are much smaller units, requiring large numbers for typical energy usage, whereas kWh provides a more manageable figure for billing purposes.
Do more calories equal more energy?
yes kilojoues convert down to joules which is the amount of energy in the body total joules= total energy
How do the joules comparison between two different energy sources impact their efficiency and effectiveness?
The comparison of joules between two energy sources affects their efficiency and effectiveness. Energy sources with higher joules are more efficient and effective in producing energy compared to those with lower joules. This is because higher joules mean more energy can be generated from the source, leading to better performance and productivity.
What contains the most joules of energy a banana or a sausage?
1 calorie is equal to 4.186 joules. sausage is 50 calories or 209.3 joules of energy. banana is 105 calories or 439.53 joules of energy. Therefore a peeled banana contains much more joules of energy than tasty looking sausages. ;)
Is it true that energy is measured in joules?
Yes, but it might be confusing to some, because it is also the unit for work. To do 100 joules of work, you need 100 joules of energy. See related link for more detail.
Is more joules better than less joules?
It depends on the context. In some cases, more joules can mean more energy or power, which may be better. But in other cases, less joules may indicate greater efficiency or less waste, which could be preferable.
What is a good sentence for convenient?
It is very convenient to pay by credit card. You'll find these meals quick and convenient to prepare. Fruit is a convenient source of vitamins and energy. A bicycle is often more convenient than a car in towns. I'll call back at a more convenient time.
What is energy measured by?
Energy is measured in Joules in the SI system. Thermal energy can be measured in calories (1 calorie = 4.2 Joules) or BTU. In traditional units, energy is in ft.lbforce! energy is measured in calories and use to be measured in joules
What is so special about gasoline cars?
The point about gasoline is that it is a very convenient means of transporting energy. One Kilogram of gaspoline has an energy equivalent of 4.35*107 joules, more than can be transported in any other way. Considering that the average gas tank can store about 55 kilograms of gas, the average car can carry a very large energy reserve.
What is the potiential energy of the 85 kg rock?
For every meter it's raised, it gains 833 more joules of gravitational potential energy.
Why is food measured in kilojoules?
It is a more convenient unit of measurement.
Why are surge protectors rated in joules?
Surge protectors are rated in joules because joules measure the energy a surge protector can absorb before it fails to protect your devices. The higher the joule rating, the more energy the surge protector can handle. Choosing a surge protector with a higher joule rating can provide better protection for your electronics.
