How could you measure the period of a pendulum?

The pendulum period formula, T, is fairly simple: T = (L / g)1/2, where g is the acceleration due to gravity and L is the length of the string attached to the bob (or the mass).

Explanation:

The dimensions of this quantity is a unit of time, such as seconds, hours or days

explanation:

v=uf/(u-f)

= 5.-10/(5+10) convex lens has negative focal length

6 cos 34, 6 sin 34 trig