Answer:
Explanation:
Power is given by , where is work and is elapsed time. To calculated work, we'll use , where is force and is displacement. Substituting given values, we have:
.
Now plugging this in to our power equation, we get:
The correct answer is A. Most reactive non metals.
Firstly if some one knows how to read the periodic table he would have no confusion in deciding whether group 7 has metals or non metals. Group 7 contains non metals so basically we can easily cancel out two options of metals.
Secondly group 7 non metals are the most reactive non metals as they need only one electron in order to complete their valence shell and become stable.
Answer:
As objects move around over time, the energy associated with them—e.g., kinetic, gravitational potential, heat—might change forms, but if energy is conserved, then the total will remain the same. Conservation of energy applies only to isolated systems.
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Yes, because the moon rotates at a different rate than what it usually do.
That statement is flase. The index of refraction
of every material is more than 1.0 .