Assume that aluminum is evaporating from a source at the rate of 5 x 1020 atoms/sec. make an estimate of the time it would take to form a 2000a layer on a 4" wafer that is 150mm distant [and perfectly square to the source b: if the evaporating source used above is charged with 5 grams of aluminum- how long could it evaporate at that rate?

Oxygen and hydrogen gas are at the same temperature t.what is the ratio of kinetic energies of oxygen molecule and hydrogen molecule if oxygen is 16 times heavier than hydrogen.

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?

The chart shows the costs and shipping times for materials that a company needs to build a new product. which describes the best trade-off if the company needs to start building their product within the next two years? they should order the domestic materials because it is always best to choose the fastest shipping time. they should order the imported materials because it is always best to choose the lowest cost for materials. since the shipping time is longer, they should order the domestic materials because the additional cost is worth it to get the materials in time. even though the shipping time is longer, they should order the imported materials because they are less expensive and should arrive in plenty of time to build the product.