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When 60 W means that W joules of energy are transferred into the bulb each second. In use how much energy is given out by the bulb each second?
Spazztastic04Spazzta...
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.
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When heat energy is transferred between trophic levels. what is always given off to the environment?
heat
How many joules in a kilowatt?
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 meterhere'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 horsepowerso 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.
Will a 6 volt battery light a 12 volt bulb?
First of all, bulbs are not normally rated in volts, they are usually recognised by how much energy they use per second (measured in Watts). However, in context of the question, there are two basic properties of an electrical circuit; current and voltage. Current is defined as the rate of flow of charge. That means that if a current of 1 amp flows for 1 second, 1 coulomb of charge is transferred. The equation is: Q=IT Charge transferred (in Coulombs) = Current (in Amps) x Time (in Seconds) Voltage is defined as the energy per unit charge: V=W/Q Voltage (in Voltage) = Energy transferred (in Joules) / Charge transferred (in Coulombs) Theoretically, based on these two equations, if you reduce the voltage but keep the current the same, the energy transferred is halved and thus, the light given out by the bulb will be halved. However, depending on what bulb it may not light at all as an LED (light emitting-diode) will only light if there is a bigger voltage than its threshold voltage. Its threshold voltage is the point where as voltage increases beyond that point, the LED's resitance would be almost zero and the bulb will light. A Filament lamp is a non-ohmic conductor (as is an LED) because the resistance is not constant as the voltage increases. This is because as the voltage increases, the energy it transfers is more and the lamp heats up. This heat vibrates the metal lattice of the wire and inhibits electron flow (charge carriers) through the metal and so its resistance increases. Thus depending on the bulb and its resistance, it may light or it may not. A simple answer to all this is, the bulb may light or not depending on the bulb and current across it. This is assuming that the length and cross-sectional area of the wire as well as the number of electron charge carriers (electron number density of the material) is constant.
How can you determine the frequency of a light wave?
to find the frequency of a light wave you need to know its wavelength. The frequency is equal to the speed of light (3x10^8 m/s) divided by the wavelength in metres. Alternatively, if you were given the energy of each photon of light in joules you could just divide the energy by plancks constant (6.63x10^-34) to leave you with the frequency in Hz.
When is the kinetic energy transferred from object to object?
kinetic Energy. Energy is transferred from one object to another when a reaction takes place. Energy comes in many forms and can be transferred from one object to another as heat, light, or motion, to name a few. For the blue ball to move to the position of the green ball, energy must be given to the blue ball.
How many calories are present given 50.75 joules of energy?
50.75 joules of energy equates to about 12.1 calories.
What is the potential energy in joules of a 100 kg mass 10 meters above the ground?
Energy is given in Joules with is a Newton meter. A Newton is a kilogram meter squared per second squared. A 10 kg child has 98.1 Newtons which equals 98.1 Joules.
The power of a light bulb that converts electrical energy at a rate of one hundred joules per second is?
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.
What does it mean for heat to be transferred by thermal conduction?
Energy is transferred when one molecule collides with another.
How much energy does a sixty watt light bulb use to yield light?
It takes 60 watt-hours. Same as lighting a 1-watt bulb for 60 hours; or 60 bulbs of 1 watt each for 1 hour. You get the idea.Notice the units: watt-hours, not watts. Watt is a unit of power, watt-hour is a unit of energy. 1 watt-hour = 0.001 kWh (kilowatt-hour) = 3600 joules = 860 calories = 3.4 BTU.
What is the concept of sound?
sound is energy transferred by vibrations in a given material
When energy is being transferred what kind of energy is given off the most?
That depends on the specific situation.
Can you measure electrical energy in joules?
The energy stored by a capacitor, for example, is given by the expression E = [1/2]CV2, where C is the capacitance in farads and V is the voltage in volts. E will be expressed in joules.
The energy given off by burning fossil fuels can be measured in?
If you refer to the units, energy is measured in joules.If you refer to the units, energy is measured in joules.If you refer to the units, energy is measured in joules.If you refer to the units, energy is measured in joules.
What is the phsyics concept of sound?
sound is energy transferred by vibrations in a given material
What name is given to part of the sun in which energy is transferred by flowing gases?
Photosynthesis
If the light bulb from number 10 radiates 100 watts times 100 joules per second of photons. How many photons per second are radiated?
Given the wavelength of the photons from above, 3000 nm you just calculate how many joules each photon has and divide that into 100 joules per second.
