In a simple machine, the energy input is 120 J. If the efficiency of the machine is 80%, calculate the energy output

Explanation:

We know that efficiency is the ratio of output power by input power. i.e. Efficiency describes the quality of machine or system how good it is.

Solution,

Energy input of system = 120 J

Efficiency = 80% =

Now,

According to definition,

Efficiency =

Cross multiplication:

Calculate the product

Hope this helps...

Good luck on your assignment...

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

i really dont know but i will try okay.

so i think u would just add all them up and get your answer..