Recent content by Edemardil

This is not homework related and I am having some trouble with describing a part of a system. It is a Rube Goldberg machine. I have two vertical "levers" with axles in the middle of them. I'll post photos. I am really having trouble describing them more or less because I don't know what a good...

I realize that I wrote my equation wrong at the end I said that it should be η*work_out but it is work_out/η . Here is how I finalized the problem: η = work_out / work_in 0.25 = (2.10e5) / (kcal) kcal = (2.10e5) / (0.25) kcal = 840e3 J J to kcal 1kcal = 4184 J 840e3 / 4184 = 201 kcal

I figured out (a) but I am having trouble with (b): (a) What is the efficiency of an out of condition professor who 2.10e5 J of useful work while metabolizing 500 kcal of food energy? (b) How many food calories would a well-conditioned athlete metabolize in doing the same work with an efficiency...

Ok, is that better? Do you have any help for me?

c) With what force must a determined 10e-10 kg bacterium cling to the rim? Homework Equations (a) (1rev/2.199m)(50.0m/s)(60s/min) to get w =1364 rev/min (b) Ca = V^2/r = 50.0^2/r I got the radius from 0.700*0.5 = 0.350 2500*0.350 = 7142.86 (c) F = m*a The Attempt at a Solution [/B] (c) I...

Homework Statement 1) A moonshiner makes the error of filling a glass jar to the brim and capping it tightly. The moonshine expands more than the glass when it warms up, in such a way that the volume increases by 0.6% (that is, ΔV/V0 = 6 ✕ 10-3) relative to the space available. Calculate the...