Abeam of electrons is accelerated from rest through a potential difference of 0.200 kv and then passes through a thin slit. when viewed far from the slit, the diffracted beam shows its first diffraction minima at ± 12.1 ∘ from the original direction of the beam when viewed far from the slit. do we need to use relativity formulas? explain wide is the slit?

Consider a one meter long horizontal pipe with a constant 100 cm^2 cross sectional area. water flows rightward into the pipe at x = 0 with flow velocity 02m/sec at every point within the pipe intake area. at x=1, the rightward flow rate is 0.192 m/sec. assume the water is a conserved quantity in the pipe, so there must be a leak (a sink) somewhere in the pipe. 1. compute net volumetric flow of the source if the system to be in equilibrium. 2. now assume the pipe in the problem has no leaks. compute the net volumetric rate of change for the system.