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Answered 2010-02-15 00:53:30

60 watts means the same as 60 joules per second. This is the energy used; all of the energy will be given off by the light bulb (but not all of it will be radiated as visible light).

60 watts means the same as 60 joules per second. This is the energy used; all of the energy will be given off by the light bulb (but not all of it will be radiated as visible light).

60 watts means the same as 60 joules per second. This is the energy used; all of the energy will be given off by the light bulb (but not all of it will be radiated as visible light).

60 watts means the same as 60 joules per second. This is the energy used; all of the energy will be given off by the light bulb (but not all of it will be radiated as visible light).

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Answered 2010-02-15 00:53:30

60 watts means the same as 60 joules per second. This is the energy used; all of the energy will be given off by the light bulb (but not all of it will be radiated as visible light).

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there are 100 joules in an energy efficient light bulb 75 joules go towards the light and 25 joules go towards the heat



In the sense of 'work' as force moving through a distance, a light bulb does none of that. But in the sense that mechanical work is equivalent to energy in other realms, the 75-watt light bulb consumes 75 joules of electrical energy every second, and radiates 75 joules per second of energy in the form of light and heat.


1) The power use of bulbs is specified in units of power, not energy. In other words, watts - which means joules per second. 2) Light-bulbs come in different capacities. 3) It is incorrect to say that the energy (or power) "is in" the light-bulb. The light-bulb simply transforms one type of energy to another, using electrical energy which is NOT stored in the light-bulb.


A Watt is a Joule per second. Joules measure energy and Watts measure power, which is the rate of energy used. Therefore, if you use a 60 Watt light bulb for 10 seconds, you consume 600 Joules.


1 Watt means 1 Joule per second, so 60 watts means 60 Joules per second. A light bulb that burns energy at that rate for 3 seconds uses 180 Joules.


100 Joules = 100 watt second = energy1 joule = 1 watt second


The light bulb dissipates 100 watts = 100 joules per second.1 joule lasts 0.01 second.


40 Joules, I think, as the formula for Watts is Joules/Second = Joules per second 40 Watts should equal 40 Joules per one second...


Watt means joules/second. It refers to the amount of energy a device uses, in this case. Multiply the power (in watts) by the time (in seconds) to get the energy (in joules).


Work is how much energy is transferred, measured in Joules. Power is how fast or slow the work is transfered, measured in Joules per second. One joule per second is called one Watt of power. This meams a 60 Watt light bulb converts 60 joules of electrical energy into roughly 15 joules of light and 45 Joules of heat every second its switched on for.


The light bulb will use electrical energy at the rate of 60 W (60 J/s), and it will emit that energy, also at the rate of 60 W.Note that in any real light bulb, only part of the energy is emitted as visible light. The remainder is mainly heat.


It's 100 watts times 3600 seconds, that's 360,000 joules of energy. A joule is 1 watt for 1 second.


Every second a 150 Watt bulb converts 150 Joules from electricity into heat and light. The number of Watts tells you how many Joules pass per second.


If the 60-W lamp is operating at its rated voltage, then the amount of energy it is using is 60 joules every second.


"60 watts" means "60 joules every second". That's what a '60 watt' bulb is designed to consume. If you put 100 joules of energy into a light bulb, 100 joules of energy are going to come out of it, one way or another. Either that energy will be converted into light and heat by the bulb's filament, or else it won't get consumed at all, and it'll come out the other side of the bulb and still be available for use in some other device. So, comparing output energy to input energy is not an effective way to evaluate the efficiency of a light bulb. What you need to do, in order to compare the economy and effectiveness of light bulbs, is to compare LIGHT output to input ENERGY.


"50 watts" means 50 joules of energy every second. "100 watts" means 100 joules of energy every second. In equal lengths of time, the 100-watt device uses twice as much energy as the 50-watt device does.



welll it really depends on the volasity of light energy but from my calculatios it is 900


1 joule is the energy equal to 1 watt for 1 second.100 joules = 100w for 1 second.A 100 watt light bulb converts 100 joules of electrical energy into heat and light every second.Only about 1% of this is useful light, the rest is wasted as heat.AnswerPower is defined as the rate of doing work. As work is expressed in joules (J), it follows that power is measured in joules per second (J/s) -however, in SI, this is given a special name: the watt (W).So one joule per second is exactly equivalent to one watt. Therefore, 100 J/s is exactly equivalent to 100 W.


100 Watts means 100 Joules/second. The voltage is not required for this calculation.


The power rating of the bulb indicates how much power it uses. The power in watts indicates how much energy in Joules the bulb uses in one second. A bulb should have its voltage and power printed on it.


1 Joule = 1 Watt.sec, ie 1 Watt for 1 second. A 75 Watt bulb dissipates 75 Joules every second, so the answer is 10/75 of a second = 0.1333 seconds




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