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A machine saves you force, changes distance, and changes direction. Those are the three ways in science that why machines are useful.
Wiki User
∙ 12y ago
Wiki User
∙ 11y agoIt depends on the machine but machines are normally useful. What kind of machine are you talking about?
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What is the world's useful machine?
What the most useful machine is, is a matter of opinion. Some would argue that the wheel is the most useful machine, and others would argue that the lever is the most useful.
How do you useful technology to machine?
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What is the most useful machine?
the lever
What is the worlds most useful machine?
the lever
What is the most useful simple machine?
bicycle
How much work put into a machine is changed to useful work put out by the machine?
90%
Is a measure of how much work put into a machine is changed to into useful work by the machine?
Efficiency
What do you think is the most useful machine for a student?
The computer.
What is the Machine Gun use full for?
Machine guns are useful for killing people. They are also useful for aiming bigger weapons; since machine guns fire tracer ammo, a machine gunner can fire on a target so the forward observer can train guns onto it.
What percentage of energy is converted into useful energy?
It depends on the efficiency of the machine. No machine is perfect and there are always losses and waste. Usually the losses are a greater percentage than the useful energy.
What is an efficiency ratio?
The efficiency ratio for a machine usually refers to the ratio of the useful energy available from a machine and the energy put into it.
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.
