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How much work is wasted if a machine with an input of 7500Joules only works at 70 percent efficiency?
Work, or energy? The input energy is only going to be 70% of the capability of the devices' energy consumption. I believe that what is really desired here, but the structure of the question does not give this quantity, is how much loss due to inefficiency, or resistance in the machine for a given amount of input energy. The basic answer is 2150 Joules. Energy is what is available to the machine, but energy is only drawn as a result of the draw on the energy source driving the machine. To illustrate, a clothes dryer is capable of drawing 5000 watts of electrical power. Does it draw all of that power in watts every time it is turned on? No, of course not. If the dryer is set for a cycle such as air fluffing, then all the dryer will draw is enough energy in watts to make the drum turn. That is not going to anywhere near the rated 5000 watts the dryer is capable of demanding from it's power source. So, the question given is misleading. You can not put 7500 Joules of energy into a device, and make it use that amount of energy. The machine will only use what it needs to do the job it is to do, plus what it needs to over come frictional losses. Work is never lost, work is a function of what the machine does, for a given load, and it's ability to do the job asked of it. Proper use of terms leads to correct answers, while not using proper terms leads to confusion.
What else can I help you with?
Does an ideal machine have an effciency of 100 percent?
No, an ideal machine cannot have an efficiency of 100 percent. This is because some energy is always lost as heat due to factors like friction and resistance. The best an ideal machine can achieve is an efficiency of 100% by having no energy losses.
Why is no machine 100 percent eficent?
No machine can be 100% efficient due to factors such as friction, heat loss, and external factors that affect performance. These limitations result in energy being lost or wasted during the operation of the machine, reducing its overall efficiency.
What increases as efficiency of a machine increases?
As the efficiency of a machine increases, the output of the machine for a given input also increases. This means that the machine can do more work with the same amount of energy input. Additionally, the operating costs of the machine may decrease as efficiency improves, since less energy is wasted.
What does reducing friction in a machine do?
Reducing friction in a machine can help improve its efficiency by decreasing energy wasted as heat. This can lead to lower maintenance costs, lower energy consumption, and increased overall performance of the machine.
Is A measure of how well a machine operates is its efficiency?
Efficiency is indeed a measure of how well a machine converts input energy into useful output. It is calculated by dividing the useful output by the total input. Higher efficiency indicates better performance and less wasted energy.
Does an ideal machine have an effciency of 100 percent?
No, an ideal machine cannot have an efficiency of 100 percent. This is because some energy is always lost as heat due to factors like friction and resistance. The best an ideal machine can achieve is an efficiency of 100% by having no energy losses.
Why is no machine 100 percent eficent?
No machine can be 100% efficient due to factors such as friction, heat loss, and external factors that affect performance. These limitations result in energy being lost or wasted during the operation of the machine, reducing its overall efficiency.
What increases as efficiency of a machine increases?
As the efficiency of a machine increases, the output of the machine for a given input also increases. This means that the machine can do more work with the same amount of energy input. Additionally, the operating costs of the machine may decrease as efficiency improves, since less energy is wasted.
Why is the efficiency of 1.0 is not achievable?
In any machine, some energy will usually be wasted. This will reduce the efficiency below the theoretical maximum of 1.0. However, please note that, if the efficiency is above 95% (or 0.95), when rounded to the nearest tenth you will get 1.0.In any machine, some energy will usually be wasted. This will reduce the efficiency below the theoretical maximum of 1.0. However, please note that, if the efficiency is above 95% (or 0.95), when rounded to the nearest tenth you will get 1.0.In any machine, some energy will usually be wasted. This will reduce the efficiency below the theoretical maximum of 1.0. However, please note that, if the efficiency is above 95% (or 0.95), when rounded to the nearest tenth you will get 1.0.In any machine, some energy will usually be wasted. This will reduce the efficiency below the theoretical maximum of 1.0. However, please note that, if the efficiency is above 95% (or 0.95), when rounded to the nearest tenth you will get 1.0.
What does reducing friction in a machine do?
Reducing friction in a machine can help improve its efficiency by decreasing energy wasted as heat. This can lead to lower maintenance costs, lower energy consumption, and increased overall performance of the machine.
If tight scissors have an efficiency of 50 percent half of your effort is wasted due to what?
It is due to friction.
Is A measure of how well a machine operates is its efficiency?
Efficiency is indeed a measure of how well a machine converts input energy into useful output. It is calculated by dividing the useful output by the total input. Higher efficiency indicates better performance and less wasted energy.
Why does a high-efficiency machine is more desirable than low-efficiency machine?
High efficiency means that a large percentage of the energy used is converted to something useful (the desired output of the machine), and a low percentage is wasted.High efficiency means that a large percentage of the energy used is converted to something useful (the desired output of the machine), and a low percentage is wasted.High efficiency means that a large percentage of the energy used is converted to something useful (the desired output of the machine), and a low percentage is wasted.High efficiency means that a large percentage of the energy used is converted to something useful (the desired output of the machine), and a low percentage is wasted.
What happens if you increase the efficiency of a simple machine?
Increasing the efficiency of a simple machine means that it requires less input work to produce the same output work. This results in less wasted energy and ultimately allows the machine to do more work with the same amount of input.
In any machine some work is wasted overcoming what?
In any machine, some work is wasted overcoming friction, which is the resistance caused by the rubbing of one object against another. This friction generates heat and sound, ultimately leading to a loss of energy efficiency in the machine. Minimizing friction through lubrication and proper maintenance helps reduce this wasted work.
Why is a machine not 100 percent efficient?
Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.Some energy (or power) is usually wasted. It is often possible to take measures to reduce it, but this can't be completely eliminated.
What is the relationship between friction and efficiency of a machine?
The relationship between friction and the efficiency of a machine is when friction increases, efficiency decreases, and vice versa. That is why you can never have 100% efficiency, because there is always at least a little friction. They are inversely proportional, meaning, higher friction equals less efficiency.
