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What will be the power of a machine doing 10 J work in 5 seconds?
Wiki User
∙ 13y ago
Power is work divided by time.
10 J in 5 s means the machine develops 2 watts of power.
Wiki User
∙ 8y ago
Wiki User
∙ 13y ago10J / 5sec = 2 J/sec = 2 watts
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The rate of doing work is?
power
How does power vary with the time spent in doing work?
Power decreases as the time spent doing the work increases. This is according to the formula of where power equals the work done divided by the time doing it. Power and time therefore stand in an inverse mathematical relationship.
What does the term power mean?
Power is the rate of doing work
How much power is needed to do 1200 Joules of work in 90 seconds?
Power is measured in watts, or joules per second. So in 90 seconds, 1200 joules of work is equal to 1200/90 watts or 13.3 watts.
Find the work you do when you exert a force of 40 N to run a distance of 18 m in 4 seconds?
The work is Work= FD= 40x18= 720 Joules. The power is W/seconds = 720/4= 180 Watts.
What power is used by a machine to perform 800 joules of work in 25 seconds?
Power = energy/time During those 25 seconds, the machine is doing work at the rate of 800/25 = 32 watts. We don't know how much power the machine must consume in order to perform work at that rate, but we know it's more than 32 watts.
Which is measured by the power of a machine?
rate of doing work
The power of a machine measuer what its rate of doing work the force it produces its strength the work it does?
"Power" is the rate of work, or of energy transfer.
What is the work done by a machine on a machine?
Power
Where does the input power go when the mechanical output power is zero?
either to friction (heat, sound, light) or to internal mechanical changesAnother AnswerPower doesn't 'go' anywhere! Power is simply a 'rate': the rate at which the machine is doing work. If the machine isn't doing work by supplying a mechanical load, then it's output power is zero. However, energy still has to be provided to overcome the losses due to heat transfer from the machine, friction, windage, etc. The rate at which this energy is supplied to the motor is the power of the machine off load.
What are the uses of a simple machine?
Doing work.
What does the power of a machine tell you?
How fast work happens or how quickly energy is transferred.
How can work affect power?
'Power' is the rate of doing work.
What is a structure with moving parts for doing work?
A machine.
The rate at which work is done is the machine's?
power
What is the work done by a machine on an object?
Power
A power mower does 9.00 times 105 J of work in 0.0500h. what power does it develop?
You need to convert the time to seconds. Then, if you divide the work (in joules) by the time (in seconds), you will get the power in watts.
