Answer:
power is given by work done divide time taken
P=w/t
therefore Pt=w
270x42=11,340.J
Prior to determining the
experimental design, a scientist typically forms a hypothesis. The answer is
letter B. this is to prepare the scientist, the possible outcome of their
research before the experimental design whether they are wrong or not.
It’s either Asia or the America
Explanation:
<em>Law of conservation of energy states that the energy of a system is always constant. </em>
In other words, we can say that energy can neither be created nor destroyed.
Mechanical energy (E) is the sum of the potential energy (U) and the kinetic energy (K) of the freely falling body. Therefore, <em><u>E=K+U=constant.</u></em>
