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What do you mean by the efficiency of a simple machine is 85 percent?
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Why can't mechanical efficiency be over 100 percent?
The mechanical efficiency can't be over 100% because a type of energy is always lost. For example, it can be lost as heat, sound or even light. When you use a light bulb, it produces light, but heat is lost in the process. See what I mean! In most cases, heat is lost due to friction. the work put out by a machine is always less than the work put into a machine to do the work. Therefore no machine is 100% efficient. As well.... Efficiency is (power out/power in) x 100. To get an efficiency of *more* than 100%, the machine must give more power out than is put in. No machine has ever been demonstrated that does this, and until someone can show this result (power out *more* than power in), we know that any machine has an efficiency less than 100%.
What does work input mean?
a task done by a simple machine
How would the world be affected if there were no levers simple machine?
It would probably effect the world a little, I guess. I mean, how many things in the world were invented that involve levers? Then, those inventions wouldn't...well, you know, be invented.
What does pulley mean in science?
A pulley is a type of simple machine, consisting of a wheel with a rope running around it. It changes the direction of the force that is applied to the rope. It is also possible, with the use of multiple pulleys, to use them as a force magnifier.
A heat engine receives 6000 J of heat from its combustion process and loses 4000 J through the exhaust and friction What is its efficiency?
If you mean that 300 J is lost, not used to produce a useful output, then 200 J is the useful output. In this case the efficiency is 200/500 = 0.4, or 40 percent.
Can a machine be more than 100 percent efficient?
100% efficiency would mean that the machine is able to transform energy from one form into another without any loss of energy from the system in the process. For it to have greater than 100% efficiency, it would have to somehow generate additional energy, not contained in the system, in the process, and this is not possible.
Is a grocery cart a compound machine or a simple machine?
Its a simple machine machine i could see where your coming from thinking it is a compound machine. But i mean it is simple. Now i know a couple stores have compound machine
What does a screw mean?
A simple machine of a inclined plane.
What is the simple machine for a nail?
If you mean its classification, its a wedge.
Compare the efficiency of simple random sampling with systematic random sampling for estimating the population mean and give your comments?
Compare the efficiency of simple random sampling with systematic random sampling for estimating the population mean and give your comments.
What does the phrase simple machine mean?
a simple michine is like a: pulley, lever and an axle
What does work input mean?
a task done by a simple machine
Why can't mechanical efficiency be over 100 percent?
The mechanical efficiency can't be over 100% because a type of energy is always lost. For example, it can be lost as heat, sound or even light. When you use a light bulb, it produces light, but heat is lost in the process. See what I mean! In most cases, heat is lost due to friction. the work put out by a machine is always less than the work put into a machine to do the work. Therefore no machine is 100% efficient. As well.... Efficiency is (power out/power in) x 100. To get an efficiency of *more* than 100%, the machine must give more power out than is put in. No machine has ever been demonstrated that does this, and until someone can show this result (power out *more* than power in), we know that any machine has an efficiency less than 100%.
What does simple machine mean in science terms?
simple machine is a machine that is simple to use. :/
What simple machine is a locksmith?
I'm assuming that you mean what machine do locksmith's use, a very common machine used is the Protech series.
If efficiency of converting chemical to thermal energy was 90 percent what would the overall efficiency be?
In saying what the overall efficiency would be, I suppose you mean for other processes, creating the chemical energy for example, and using the thermal energy. This is impossible to answer, not knowing what these processes are.
What is Latin for efficiency?
Capáx or Peritús are the words which mean efficient in Latin.
