If 250 joules of work are performed by an engine using 600 joules of energy in 5 seconds, what is the efficiency of the engine?
To calculate the efficiency of the engine, you need to use the formula:
Efficiency = (Useful Work Output / Energy Input) x 100%
In this case, the Useful Work Output is given as 250 joules, and the Energy Input is given as 600 joules. So, we can substitute these values into the formula:
Efficiency = (250 / 600) x 100%
Efficiency = 0.4167 x 100%
Efficiency = 41.67%
Therefore, the efficiency of the engine is 41.67%.
To find the efficiency of the engine, you need to use the formula:
Efficiency = (Useful output energy / Input energy) * 100%
In this case, the useful output energy is the work performed by the engine, which is given as 250 joules. The input energy is the total energy used by the engine, which is given as 600 joules.
So you can now substitute these values into the formula and calculate the efficiency:
Efficiency = (250 joules / 600 joules) * 100%
Divide 250 by 600 to get the decimal value, then multiply by 100 to convert to percentage:
Efficiency = (0.4167) * 100%
Efficiency = 41.67%
Therefore, the efficiency of the engine is 41.67%.