The answer is number 1 solar panels
7.5 I think because it can not be 9 because it’s not close to 50
<span>"prevent the engine from over speeding the armature"
hopes this help :) :D :)</span>
they have more energy than radio waves.
&
because the wavelength of the light waves are too small
Answer:
It is<em> impossible</em> to construct a machine which produces the <em>work output greater than the work input.</em>
Let us consider the II law of thermodynamics.
According to Kelvin Plank's statement any engine/machine does not give hundred percent efficiency. And violating the PMM-II(Perpetual motion of machine II kind), Always some amount of energy transferred to the sink or surroundings.
Therefore
W(ouput) = Q₁-Q₂
There are many reasons to lower the work output, just for an example friction between the mating parts reduces the work output.
