Recent content by JustSomeGuy80

Got it. Thanks Wumple and Mark.

Homework Statement I have a problem in which I don't understand what is supposed to be solved. This is the exact question: "A silo-based Inter-Continental Ballistic Missile has a range of 8000 miles. If the Earth is presumed to be a sphere with circumference 24,000 miles, what percentage...

Hello, I was trying to do this problem and then I looked at the solution manual and found something that confused me. I am having trouble distinguishing between centripetal and radial acceleration. According to the equation in the book a_r=-a_c, which kind of confuses me. Isn't a centripetal...

an angle? arc length?

Homework Statement The problem asks to choose the dimensionally correct equation. In the back of the book it says that the correct answer is y=2 cm * cos(k*x), where k=2 m^-1. What do x and y stand for? The book doesn't say. Does each variable usually represent a certain dimension in...

I don't know much about physics but I know that Work = Force x Distance. Does it take more force to pump an x amount of water through a bottleneck (a shrinking radius from a to b and the constant radius from b to c) as opposed to pumping that same amount of water through a constant radius? If...