Areflection laue exposure of an aluminium crystal (lattice parameter 0,405 nm) is made using 50 kev radiation. the (111) planes make an angle of 88â° with the incident beam. what order reflections are present in the beam that is diffracted by these planes? ignore diffraction as a result of wavelengths greater than 0,2 nm that will be too weak to observe.

If forces acting on an object are unbalanced. true or false

At 20∘c, the hole in an aluminum ring is 2.800 cm in diameter. you need to slip this ring over a steel shaft that has a room-temperature diameter of 2.804 cm . 1. to what common temperature should the ring and the shaft be heated so that the ring will just fit onto the shaft? coefficients of linear thermal expansion of steel and aluminum are 12×10−6 k−1 and23×10−6 k−1 respectively.

Isobars are lines of constant or equal pressure on a weather map. they can be used to find areas of low or high pressure over a broad area, and they can tell us how intense the system may be. on weather maps, you may have noticed areas that have a large l or h over a region with lines circling around them. the l stands for low pressure and h stands for high pressure. the lines circling them are isobars. check out the pressure system and isobars over georgia and florida. what is the present weather in this area ? a) clear and sunny b) cold and cloudy c) changing weather d) lots of precipitation