For a na'-ci ion pair, attractive and repulsive energies ea and er, respectively, depend on the distance between the ions r, according to 1.436 7.32 106 for these expressions, energies are expressed in electron volts per na-cl- pair, and r is the distance in nanometers. the net energy en is just the sum of the preceding two expressions (a) superimpose on a single plot ex, er, and ea versus r up to 1.5 nm using matlab. (b) on the basis of this plot, determine (i) the equilibrium spacing ro between the na and cl ions, and (ii) the magnitude of the bonding energy eo between the two ions. (c) mathematically determine the ro and eo, and compare these with the graphical results from part (b).

Two polarizers are oriented at 24.0∘ to one another. light polarized at a 12.0-degree angle to each polarizer passes through both. what is the transmitted intensity (%)?

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)

Awalk up the phase change graph worksheet