0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Why is sound energy wasted when a kettle is heated?
when th kettle is heating up it making a boiling sound throught the process. This is sounded energy that is not being used hence wasted sound energy
Is a boiling kettle useful or wasted energy?
Wasted, unless you specifically want to produce a lot of steam.
What is the wasted energy for a kettle?
By the fact that the kettle is hot. The heat energy is also warming the metal of the kettle. By the fact that the water boils to steam,; loss of water to steam. The energy should only heat the water to boiling point, and not heat the kettle nor allow the water to boil off.
What is the useful and wasted energy in an electric heater a television an electric kettle headphones Thanks for your help?
The use ful energy from headphones would be sound , the wasteful would be battery power.
If 2000j of energy is input to the kettle how much energy is output from the kettle?
The total energy in the kettle system will be 2000J. However, the energy will be distributed different ways. Some will go into heating the water, some will go into changing the water into steam (which takes a LOT of energy), and some will be lost as radiant heat energy. The specifics depend on the kettle itself, and how much water you have in the kettle.Changing one milliliter of water by one degree requires 4.186 J of energy, but to convert it into steam requires 2259.36 J per ml
Why is sound energy wasted when a kettle is heated?
when th kettle is heating up it making a boiling sound throught the process. This is sounded energy that is not being used hence wasted sound energy
Is a boiling kettle useful or wasted energy?
Wasted, unless you specifically want to produce a lot of steam.
What is the wasted energy for a kettle?
By the fact that the kettle is hot. The heat energy is also warming the metal of the kettle. By the fact that the water boils to steam,; loss of water to steam. The energy should only heat the water to boiling point, and not heat the kettle nor allow the water to boil off.
What is the useful and wasted energy in an electric heater a television an electric kettle headphones Thanks for your help?
The use ful energy from headphones would be sound , the wasteful would be battery power.
Why is work output by a machine always less than the work input?
It is usually unavoidable that some energy is wasted.
If 2000j of energy is input to the kettle how much energy is output from the kettle?
The total energy in the kettle system will be 2000J. However, the energy will be distributed different ways. Some will go into heating the water, some will go into changing the water into steam (which takes a LOT of energy), and some will be lost as radiant heat energy. The specifics depend on the kettle itself, and how much water you have in the kettle.Changing one milliliter of water by one degree requires 4.186 J of energy, but to convert it into steam requires 2259.36 J per ml
What energy does an electric kettle have?
The energy which powers a kettle ultimately comes from the Sun. While a kettle is powered by electrical energy if it is an electric kettle or gas if it is whistling kettle, the energy ultimately comes from the Sun and came to Earth as sunlight.
Why in a real machine the output work is always less the input work?
In a real machine, part of the energy (or power) is always wasted.
Is it always easy to collect wasted energy and use it?
Once the energy is wasted, you can't convert it back to useful energy.Once the energy is wasted, you can't convert it back to useful energy.Once the energy is wasted, you can't convert it back to useful energy.Once the energy is wasted, you can't convert it back to useful energy.
What type of energy does a kettle use and what types of energy does it get converted to?
A kettle uses electrical energy and converts it into heat energy.
What is the work output of a machine never equal to the work input?
It is usually less. The reason for this is that some energy is usually lost (wasted) in the machine.
How does an electric kettle get energy?
The kettle has to be plugged in to an energy supply before it can heat up.
