The top of the trajectory is the point where it changes from rising to falling. At that exact instant, its vertical speed is zero.
Answer:
electric current
Explanation:
<em>An electric current is defined as the movement or flow of electrically charged particles in a particular direction either within an electric circuit or an electrolytic cell. </em>
In an electric circuit, the electrically charged particles are called electrons while in an electrolyte, they are referred to as ions.
As we know, period (t)of a wave and it's frequency (f) are Reciprocal of each other, so if one is know then we can just reverse the order to get the other one.
that is :
Now, let's move on to problems ~
# 11. f = 15 hertz, t = ?
#12. f = 292 hertz, t = ?
#13. t = 12 seconds, f = ?
It’s C because just trust