A mass attached to a spring is pulled towards the floor then let go. Its height is recorded and
can be modeled by the function: h(t) = -10 cos (4t). How long does it take for the mass
to reach its maximum height in the first cycle?

First find the derivative,

.

Then find the critical point,

.

Hope this helps.

I am a little rusty here :(.

hello, there is a new name in town and that's the human spider!

answer: d.) the total number of protons and neutrons is 15

merry christmas!

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your friendly neighborhood human spider! .