Recent content by limper

Homework Statement Some particles pass through a single slit of width W = 0.17 mm. After the particles pass through the slit they spread out over a range of angles. The de Broglie wavelength of each particle is λ = 561 nm. Use the Heisenberg uncertainty principle to determine the minimum range...

Thanks for the replies, but it's smartphysics/flipitphysics. It doesn't mark things off for overdoing significant figures, it usually requires more than would be in line with the problem's parameters. I did try the answer to 2 and 3 figures just to be sure, but it seems like the problem is bugged.

Homework Statement A hot reservoir with a temperature of 653 K is 0.7 m away from a cold reservoir with a temperature of 399 K. The two reservoirs are insulated from each other except for a rod of brass (k = 109 W/m-K) that has a cross-sectional area of 0.07 m2. The entire system is allowed to...