4 electrons should be moving outside the nucleus
Efficiency is the estimation of output power by any machine. A 12% efficient engine has an output provided by the input energy of the engine. Thus, option D is correct.
<h3>What is efficiency?</h3>
Efficiency is defined as the energy given by the machine, engine, or any system by utilizing the input power or energy. It is given as,
η = Output ÷ Input × 100%
It is used to know the ability of the machine to transfer the input energy to an external amount of work. The engine with 12% efficiency is said to have produced energy by utilizing the provided 12% input.
Therefore, option D. the 12% of input power is used by the engine to produce the energy.
Learn more about efficiency here:
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A mole or fraction of a mole represents a specific <span>number of atoms or molecules. The correct option among all the options that are given in the question is the first option or option "a". The other choices in the question are incorrect. I hope that the answer has actually come to your great help.</span>
The initial velocity is equal zero
and the cat falls freely so the acceleration equal 9.81 m/s^2
V = Vo + g * t
V = 0 + (9.81 * 2.6)
V = 25.5 m/s
Answer:
Density is defined as how tightly or loosely packed a substance is, or to the number of things or people in a certain area.
