One watt is defined as one joule per second. So one kilowatt is defined as 1000 joules per second.
Don't confuse Energy (joules) with Power (watts). Power is the rate of production of energy, so it must have dimensions which include per second or per hour, or per some other unit of time.
Actually, the definition of joule is a unit of work just like the definition of watt -- it's the amount of work done by one newton (0.101971621 kilograms) done over the distance of 1 meter. here's how merriam-webster defines it -
Definition of JOULE
: a unit of work or energy equal to the work done by a force of one newton acting through a distance of one meter
here's how they define a watt -
Definition of WATT
: the absolute meter-kilogram-second unit of power equal to the work done at the rate of one joule per second or to the power produced by a current of one ampere across a potential difference of one volt : 1⁄746 horsepower
so you can see, joules are also expressed in seconds, hours, etc. a watt can be used to express a total power without using it as a time based quantity, just like joules, when viewing it as to how much power, energy, what have you, at any given time slice. a circuit whose load is 1 amp, and has 1 volt across that load, is using 1 watt. in 1 minute, the total energy used would be 60 joules. the thing is, not all equations need joules expressed in time -- they just use the total amount of joules required (E=MC2 for example says you can create a given mass (in kilograms) if you have enough energy (in joules) divided by the speed of light squared (in kilometers per second -- i.e. 300,000 squared). thus in theory, you can create 1kg of mass with 90000000000 joules of energy. so, to make a long explanation just slightly longer, you can make 1kg of mass with 90 GW (gigawatts) of energy applied for 1 second. pretty nifty, but seems to require an awful lot of power to make a small amount of mass.
1 kilowatt = 1000 joules per second, so it will take 480 seconds. (8 minutes).
You can't convert from Joules to Watts because Joules is a measure of total energy, and Watts measure energy per second.
A therm is an energy unit (equal to 100000 BTU) while kilowatts are power (energy/time). 1 watt = 1 Joule/second, and 1 kilowatt = 1000 Joules/second. The kilowatt hour is an energy unit (power X time = energy). 1 therm = 29.31 kWh
Voltage is electrical pressure and Joules is a power rating so other info is needed
Depends on how much force is placed into a punch.
1 kilowatt hour = 3,600,000 Joules 1 Tetrajoule = 1,000,000 Joules 1 kilowatt hour = 3.6 Tetrajoules
A BTU is about 1055 joules. A kilowatt is 1000 joules/second, so it is 3,600,000 joules/hour. Dividing that by 1055 joules gives you the equivalent of about 3400 BTU/hour.
The energy 1 kilowatt-hour (kWh) is 3600000 joules.AnswerThere is no such thing as a 'kilowatt per hour'. You probably mean 'kilowatt hour'?
Kilowatt is a measure of the rate of energy use. It is 1,000 Watts or 1,000 Joules per second. A kilowatt hour is 1,000 Joules per second for 3,600 seconds or 3,600,000 Joules. This means a Kilowatt hour not a rate but a measure of total energy used.
Killo = 1000. There are 1000 watts in 1 kw.
These do not have the same units. 1 kilowatt hour per meter cubed is in kg m-1 s-2 1 kilojoule per kg is in m2 s-2
365 kilowatt-hours is 1,314,000,000 joules.
The kilowatt (kW) is one thousand watts.
Watt means joule/second, kW (kilowatt) means kilojoule/second, i.e., thousands of joules per second.
Watt, kilowatt, or megawatt are units of power (energy/time). A watt is 1 joule/second. A kilowatt is a thousand joules per second. A kilowatt is also 1 kWh/hour (kilowatt-hour / hour). Since you would usually pay per kilowatt-hour, you might be more interested in the number of kilowatt-hours. A megawatt is a million joules per second - or a thousand kWh/hour.
Joules x 0.000000278 = kW/h
Power is measured in Joules per Kilowatt.