0
What is the percent efficiency if a man expends 100 J of work and the work produced is 80 J?
Wiki User
∙ 11y ago
100*80/100 = 80%
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
A man expends 100j of work to move a box up a inclined plane. the amount of work produced is 80j. what is the efficiency of the machine?
80%
How does the output work compare to the input work for a machine that has an efficiency equal to 100 percent?
If a machine has 100 percent efficiency, the output work = the input work. That's actually basically what the efficiency of a machine is - output work / input work * 100.
What is the formula to calculate percent efficiency?
(work out/work in) x 100
What is the efficiency is the output work is 12000 and the input work is 15000?
Efficiency as a percent is output/input * 100%12000/15000 * 100% = 80% efficiency which makes sense, because it takes more work (input) than it give out (output). So the efficiency should be less than 100%.
What is a percentage of work in to work out?
efficiency
A man expends 100j of work to move a box up an inclined plane the amount of work produced is 80j what is the efficiency?
50
A man expends 100j of work to move a box up a inclined plane. the amount of work produced is 80j. what is the efficiency of the machine?
80%
How does the output work compare to the input work for a machine that has an efficiency equal to 100 percent?
If a machine has 100 percent efficiency, the output work = the input work. That's actually basically what the efficiency of a machine is - output work / input work * 100.
How can convert efficiency to percent?
Work done = (force * distance)>Efficiency (%) = (Work done output / Work done input) * 100
What is the formula to calculate percent efficiency?
(work out/work in) x 100
What is percent efficiency?
it is the amount of work that can be done. a machine can use 300,000 J of energy but it only uses 263,000 J. that is percent efficiency.
A levers efficiency is 95 percent The work in is 95 J What is the work out?
yes
What is the mechanical efficiency of a machine whose work input is 100j and work output is 30j?
The mechanical efficiency of this machine is 30 percent.
The ratio of output power to input power in percent is called a conductivity b efficiency c work d horsepower?
B.) efficiency
What of the machine compares the output work to the input work and is expressed as a percent?
That's the machine's "efficiency".
A machine has an efficiency of 91 percent If the energy supplied to the machine is watts what is the amount being used for work?
If the efficiency is 91%, then work = 0.91 times watts
The efficiency of a ramp is 75 percent If the amount of work input is 240 J what is the amoun t of useful work output?
The formula for percent work efficiency is: percent efficiency = (work output/work input) x 100 To find the answer to this question, you just need to plug the given values into the formula. The problem tells you that the work input is 240 J and the percent efficiency is 75 %, so 75 = (work output/240) x 100 Now, solve for work output: -first divide by 100 .75 = (work output/240) -then multiply by 240 180 J = work output (in units of joules because work is measured in joules) And there's your answer. Hope this helped!
