An is designed around a system, or a group of variables that
are related in some way*
Hypothesis
Theory
Experiment
Law

i don't know that i agree with that but what's the question ?

battery with hi vtge high val resist in series

hi,

what occurs during a solar eclipse?

there are small tides across earth.

the moon is between earth and the sun.

p.s. im not sure if the first answer is correct because during a solar ecliphse there are spring tides and i dont know if they are the same.

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y