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

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Good luck on your assignment...

it breaks and dirupture other materials and other sencews from the bottom

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west