Recent content by tralblaz

Homework Statement Under many conditions, the rate at which heat enters as air conditioned building on a hot summer day is proportional to the difference in the temperature between the inside and outside, Th-Tc. (If the heat enters entirley by conduction,this statement will certainly be...

Thanks :)

:rolleyes: First, I will state the problem - A hauling truck is traveling on a level road. The driver suddenly applies the brakes, causing the truck to decelerate by an amount (g/2). This causes a box in the rear of the truck to slide forward. If the coefficent of sliding friction...

Thanks, I wass thinking of Newton's 2nd, but you also have to integrate problem, correct? Thanks for any help and Newton's confirmation :)

I am just starting out in Mechanics at my University. (Mechanincs is also known as statics and dynamics). I am having trouble working (what should be a simple) problem. Here is the problem: Find the velocity X(with 1 dot above the x) and the position X as a functin of the time t for a...

I just wanted to double check to make sure, because after my instructor told us to use the formula that way, he came baack and told us to use thr formula as the number of oscillations (back and forth) divded by t (time)

First, I hope this area is the right one for my question. I am working on a lab for Phyiscs I. The lab title is "Simple Harmonic Motion". Okay her is the deal and the question. My instructor told us to find the period by dividing the Time recorded by the number of oscillations (back and forth...

Thanks a lot! I am glad that there are people out there that can help you out and double check your math. I am slowly picking this up. . Thanks again!

Thanks! THat helps! By the way, I solved for t by using Xf=Xi+Vxit+½axt^2 where xf=2000m (2km) where 1/2(9.8m/s^2)t^2 solve for t xi and vxi are zero because thst is the initial so now you have t^2= 2000m/(1/2)*9.8m/s^2 which is 20.2s Hopefully I did the math correctly. Now if I am...

There is no y Impact... or am I reading to far into the problem? I am given v=200m/s, x=2km, (assume) g=9.8m/s^2. Now to set up for ther quadradic -b*sq ^2-4ac/2a where b=v =200m/s where a = x = 2km where c = g =9.8m/s^2 Am I on the right track or should g=9.8 m/s^2 not be in the...

The equation R=(Vi^2sin2theta)/g is the Range formula in my Physics textbook. The way I understand the Two projected angle portion of the problem, is that you will have an angle above 45 degrees and one below 45 degrees (if I understand correctly that 45 degrees is always max Range). I hope that...

I have a problem. So far, I have decided that this problem is using the Range Equation. Here it is - The initial speed of a cannon ball is 200m/s. If it is fired at a target that is at a horizontal distance of 2 km from the cannon, find A) the two projected angels that will result in the hit and...