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What else can I help you with?
What must you know in order to calculate a machine's efficiency?
The efficiency tells you how good the machine is. Efficiency equals the power output of the machine divided by the power that is input via a shaft, or via electrical wires, or via fuel. So if the machine has a low efficiency it wastes power and energy, which costs money. The average ordinary automobile has an efficiency of 20-25%. A lot of research work goes into improving that figure.
What does efficiency tell you about a machine?
The efficiency of a machine tells you how much usefull energy it will put out compared to the amount of energy that's put in. The usefull output energy is usually less (never greater) then the input because of energy loss due to frictional heating. For example if 120 joules of energy or work is put into a lifting machine, you might only get out 110 joules of lifting work because 10 joules is lost to heat. The efficiency of the machine is then ; (110/120) x 100% = 91.7% . I think for most practical machines anything above 90% efficient is quite good. (The terms work & energy are used interchangebly here because work is a transfer of energy).
When is friction unuseful?
When it wastes energy you would rather keep - which is quite often.When it wastes energy you would rather keep - which is quite often.When it wastes energy you would rather keep - which is quite often.When it wastes energy you would rather keep - which is quite often.
What are the disadvantages on using a fax machine?
it wastes paper
What is the removal of wastes from blood from a machine called?
dialysis
Which engine wastes the most energy?
I would say, heat engine on earth would waste the most energy since it is always limited by thermodynamic efficiency to have some loss. In general, lower the temperature difference will resulted to lower the efficiency, a simple steam engine for a train would be of lower efficiency than a internal combustion engine and lower than complex high pressure steam turbine and is probably the lowest engine efficiency in commercial scale.
What following does NOT a way to increase energy efficiency?
The following will not increase energy efficiency : ( 1 ) operation at faster rate ( 2 ) operation withmore friction ( 3 ) operation with more heat losses ( 4 ) ??????????????
What is the dialysis machine trying to achieve?
This machine is working to remove wastes from the blood just as your kidneys should be doing.
What are radioactive wastes byproducts of?
A+ Nuclear energy
Radioactive wastes are a byproduct of?
A+ Nuclear energy
What are radioactive wastes a byproduct of?
A+ Nuclear energy
Does an electric can opener convert electric energy sound energy?
Not likely - any machine wastes some energy; that would reduce the useful output energy.
