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A GaAs MESFET has a 0.2 µm thick N-channel doped to Nd = 1017 cm-3. Assume that
(c) Can any gate voltage of the opposite sign to (b) be applied to the gate without producing expression gate current? What is its effect on W depand Ids?
(d) What needs to be done to redesign this MESFET so that its channel is cut off at Vg = 0 and the channel only conducts current at Vg larger than a threshold voltage?
Calculate the concentration of HC2H3O2 or NH3 in each of the solutions you measured. By how many units did the pH of a solution of a weak base or acid
One of the highest concentrations of peroxyacyl nitrates has been found in the Los Angeles (LA) basin at 30 ppb, reaching its peak at mid-afternoon. Most of the pollution in the LA basin is created in an area of only 3000 km^2
a. You have 50 mL of a buffer solution that is 0.15 M in HA and 0.25 M in A-. Calculate the pH of the solution after you add 100 mL of 0.01 M HCl to the solution. The pKa of HA is 4.75.
If a battery operates at 2.7 V, what voltage will someone get if someone put: a.) three of these batteries in parallel b.) four of these batteries in series How do I go about working this type of problem
Silver chloride crystallizes with the sodium chloride (rock salt) structure. The length of a unit cell edge is 555 pm. What is the density of AgCl? Show all works.
a sample of gas is collected over water at a temperature of 35 c when the barometric pressure reading is 742 torr. what
The rate constant (K) for a reaction was measured as a function of temperature. A plot of ln K versus 1/T (in K) is linear and has a slope of -9.50×10^3 K. Calculate the activation energy for the reaction.
The solubility of nitrogen in water exposed to the atmosphere, where the partial pressure of nitrogen is 593 mm, is 5.3 × 10-4 M. At the same temperature, what would be the solubility of pure nitrogen, at a pressure of 760 mm
How many half lives will it take the c4h6 to decrease to 3.1% of its original concentration? the relationship of At/ A0= 0.50
Draw the skeletal structure of the product or mixture of products that result from the bromination of the given starting material with less than one equivalent of NBS in the presence of peroxides.
Calculate the change in enthalpy for: 2Li(s) + 2HBr(g) → H2(g) + 2LiBr(s)
The pH of a bicarbonate-carbonic acid buffer is 7.80. Calculate the ratio of the concentration of carbonic acid (H2CO3) to that of the bicarbonate ion (HCO3-).
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