Recent content by SHawking

I understand the resolution to the typical statement of Olber's paradox, that is, that with a finite horizon distance only light up to a certain distance will have reached Earth. However, let's say that we modify the contents of the universe such that we have an infinite horizon distance. Why...

First, this is not a homework assignment even though it may seem like a homework type question. I have no problem with the derivation of the moment of inertia of a cylinder but am having more trouble with a sphere. I completely understand the often referenced disk method, but, I would like to...

Could someone assure me that this problem is possible with the given information. I keep getting two variables, both unknown and no good substitutions.

You have the time that it took to fall, but it did not fall straight down. How long would it take it to fall straight down?

I have been working on it, and got stuck, though it seems like this route would work. Using F=ma and trying to solve for the downward force in the y direction I get F=-mg-.012v F=-mg-.012(dx/dt) Integral of F dt= -mg-integral .12 dx From the looks of this, I think that setting up the...

Calculate the time it would take the object to fall from this height, and you will see that if it fell straight down it will be a different time, because it travels a greater distance because it has a forward component (from the plane). From here, you can find the velocity of the plane.

Homework Statement First, this is not an assignment, per se, it is for my own help, and If someone could help me work it through that would be much appreciated. An object of mass 1 Kg is launched at an angle of 42° from the horizontal at 180 m/s. A force of drag acts on it that is dependant...

Homework Statement A block of mass m hangs on the end of a cord and is connected to a block of mass M by a pulley arrangement. (m hangs freely, M is attached to the string, and is on a table top. (So m is attached to a string which goes therough a pulley changing the strings direction 90...

I'd rather not use a numerical method- my intent is to get an algebraic solution. As for graphically, I don't quite see how it would work. Does anyone know the correct analytical approach?

I mean, how exactly would one go about proving x=2? If someone gave you the equation, or any other equation with an answer x=some number less then two how would you prove it? Basically, how would you solve for x, and show that x=2?

I think I actually saw this question on here before but can't find it, hopefully someone can help me. We know x=2 for 3^x+4^x=5^x but how would you prove that x=2 in this case? Thanks.