Turn the percentage into a decimal by dividing by 100: 91% --> .91
Work out = (efficiency) * (work in)
dividing by a unit of time gives =>
Power out = (efficiency) * (power in)
P_o = .91 * 4000 Watts = 3640 Watts
The efficiency of the machine is 91%, so the amount used for work is 91% of the energy supplied. Amount used for work = Efficiency x Energy supplied = 0.91 * 4000 watts = 3640 watts.
If the efficiency is 91%, then work = 0.91 times watts
The efficiency of a machine is given by the ratio of useful work output to the energy input. Therefore, if the machine has an efficiency of 91%, the amount being used for work would be 91% of the energy input. In this case, if the energy supplied is 4000 watts, the amount being used for work would be 0.91 * 4000 = 3640 watts.
To calculate the efficiency of a machine, you need to know the amount of useful work output produced by the machine and the amount of total energy input supplied to the machine. Efficiency is calculated by dividing the useful work output by the total energy input and multiplying by 100 to express it as a percentage.
The idea here is to calculate 91% of 4000. By the way, technically "watts" is not a unit of energy. It is a unit of power - that is, energy per unit time.
At least 320 J
A ideal machine would have an efficiency of 100 percent. For this to be possible, the amount of energy output by the machine would equal the amount of energy input. Because all machines have physical parts, some energy is lost to friction, heat dissipation, or other factors, so no machine can be an ideal machine.
you take the fuel consumption times the amount of matter moved, then you divide the PRODUCT OF THAT BY THE WEIGHT OF THE MACHINE. answer should show up in a percent
The amount of energy used in a certain amount of time and the expense.
Percent efficiency is a measure of how well a system or process converts input resources into output results. It is calculated by dividing the actual output by the theoretical maximum output, then multiplying by 100 to express it as a percentage. A higher percent efficiency indicates a more effective use of resources in achieving desired outcomes.
Work efficiency compares the amount of work output by a person to the amount achieved by a machine. It calculates the effectiveness and productivity of both human labor and automated processes. A higher work efficiency indicates that the machine is performing a greater portion of the work, while lower efficiency implies human labor is more dominant.
Fat supplies 60 percent of the body's energy