Recent content by fizzzzzzzzzzzy

A hollow cylinder(hoop) is rolling on a horizontal surface at v = 3.3 m/s when it reaches an incline of 15 degrees. how far up the incline will it go? this was in the chapter about rotational motion but from my understanding of it, it can be solved just by taking the kinetic energy and having...

A 0.45 kg ice puck, moving east with a speed of 3 m/s, has a head-on collision with a 0.9 kg ice puck. Assuming a perfectly elastic collision, what will be the speed and direction of each object? Alright, so the first time i go through this problem i solve it, no problem. the answer is 1 m/s...

thanks drpizza youve been the best help so far, but there's one part of what you said that i don't get. You said that the first equation was alright as equaling d, but after i plugged in t in that equation you said that the right side had to be fixed. I'm not quite sure what you mean when you...

At what projection angle will the range of a projectile equal its maximum height? The Attempt at a Solution alright so i figure that i can just solve the equation be figuring out at what time the projectile will be at its actual height: d = v*sin(x)t - 9.8/2 * t^2 d' = v*sin(x) - (9.8)*t...

Hey, i was reading about the Collatz conjecture, where, if you take a integer, divide it by 2 if its even and triple it then add one if it's odd, and do it over and over again, the result would be one. I was thinking, "wouldnt it have the same effect if you didnt triple odd numbers?" am i wrong?

from what i know, they are the same thing, just different ways of describing it. when energy travels as a wave, it also travels in quanta, and when particles travel in waves, that's the same as energy traveling because e= mc^2

From what I understand, most events in quantum physics are based on probability, right? Is this because there is information about particles that we can't get without interfering with it, or is it because the particles themselves are determined by probability? Thanks

maybe I am reading it wrong, but the way i read it was that there are 2 boxes tied to each other with a rope and that rope is hung on an iron bar.

it is no limit but do you need help solving the integral? also the integral of that doesn't have (0,0.25) but it has (0.25,0), is that what you meant?

look at it as an equation, and you need to integrate by parts at least twice

thats pretty much the whole problem. now that you know what angle the mirror is set at, figure out what angle the mirror should be set at to see your eyes and subtract

but why would the one kg mass accelerating make a difference? no matter where that mass is or how fast its accelerating, that mass exerts a force of g on the string and therefore on the block. there's probably a faster method than this, but what i would do is use x as the distance between the...

theres this problem in my book that talks about the detonator paradox, where there's one U shaped figure and one T shaped figure and there's a button for a bomb at the bottom of the U shaped figure, and the question is if the 2 figures go toward each other so that they fit, will there be a...

Homework Statement integral of 1/(sinx)^4 Homework Equations i dunno The Attempt at a Solution ive tried substitution but that just results in a more complicated integral, integration by parts does the same thing without actually reducing the integral. I though i could use...

i have to solve a definate integral, and i solved it up to the point where i just have to plug the numbers in, and I am sure that that equation is right, but the upper limit is 2 and the lower limit is 2*3^(1/2)/2 and they get pluged into a arcsine function.