Recent content by ducnguyen2000

haha, nvrmind, i figured out what i did wrong.

N is the force of norm exerted by the track on the cart at the top of the loop by the way

1. A uniform solid sphere of radius r starts from rest at a height h and rolls without slipping along the loop-the-loop track of radius R as shown. a) What is the smallest value of h for which the sphere will not leave the track at the top of the loop? Attempt: Homework Equations...

Well... I want a vacuum for a cathode ray experiment, and it's about a foot long and 3 inches in radius.

thank you very much... all of you. :)

Do you know where I can buy a pump? And if not, how to make one?

I'm just curious on how a near-perfect vacuum is created.

Have you covered your transcendental functions yet?

I'd use the product rule.

You didn't apply the chain rule, remember df(u)/dx = f(u)'*du/dx

What I was asking for was not the chemical properties that makes an atom metal or non-metal, but the structure of the atom that causes these properties.

Just wondering.

I've been promulgating my knowledge of chemistry from this book. I'm 16 and am wondering if this book will give me a high school level understandings of chemistry.