Recent content by Gramps

yes, Calculus I. But math is not my strength, so i have to survive. In other hand, Chemistry I and II was very easy for me. Thankfully, Physics I and II are the last math classes i have to take :biggrin:

i know he is right, I'm just confused in the values i need to use. Because if R = r then (R^2 - r ^ 2) = 0, so why adding it in the formula? I just want to be 100% sure that what I'm doing is right. But i know Tide knows exactly what he is talking about, but I'm a "n00b" in physics and...

The acceleration due to gravity is 9.8 m/s? R is the radius of Earth, and r is the radius between the object and the Earth's core, right? So r = R. Am i right? :confused:

Man, I'm having real trouble understanding this. Ok, I have: Mass of Earth= 5.974 * 10 ^24 Kg R of Earth = 6. 374 * 10 ^ 6 m G = 6.67 * 10 ^ -11 diameter of Earth = 1.27 *10^7 m I need to know the speed the ball use to go from one end of the hole to the other end. I thought the speed...

we haven't talked about frequency yet. Can i use thos forumla to find time: t^2 = 2h/g ?

Hometest help (fixed) If i drill a hole through the center of the Earth that cross the entire planet and then i drop a ball into the hole: 1. What is going to be the speed of the ball at the other end of the planet? 2. How much time is going to take the ball of going from one end to...