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Below circuit is the small signal equivalent of an amplifier. Among given choices, which one represents the formula for the RO , the output resistance of the amplifier?  Note: Parallel sign || has priority over addition +. As an example rpi + RB||Rs means RB || Rs is done first and then resulting value is added to rpi ro(1).jpg

  For the circuit shown below, assume collector current I C Q = 4   mA I_{CQ} = 4 \, \text{mA} , β = 100 \beta = 100 (with I E ≈ I C I_E \approx I_C ​), and V B E ( on ) = 0.7   V V_{BE(\text{on})} = 0.7 \, \text{V} . The emitter resistor R E R_E ​ is given as 1   k Ω 1 \, \text{k}\Omega , as indicated. Determine the value of R 1 R_1 that ensures the circuit remains bias-stable. For this calculation, you do not need the values of R C R_C or V C E V_{CE} ​. Assume the transistor operates in the forward active region. Select the value closest to your result. find R1.jpg

Using the following dataset   Please find: (Notice that the *2 is not a subscript)

Which industry utilized LeFlore County’s dense forests in the late 19th century?

Consider the molecule and the following hybridization choices:What is the hybridization of the oxygen atom?

For a gas, which two variables are directly proportional to each other (if all other conditions remain constant)?1. T and n2. V and n3. V and T

What hybridization is predicted for the nitrogen atom in the NO3– ion?

Four identical 1.0-L flasks contain the gases He, Cl2, CH4, and NH3, each at 0°C and 1 atm pressure.For which gas are the collisions elastic?

You fill a balloon with 2.50 moles of gas at 22°C at a pressure of 1.62 atm. What is the volume of the balloon?

Free Response B2:  Answer this below and show your work in the space marked for Free Response B The chemical reaction for the explosion of a fertilizer bomb is as follows: NH4NO3(s) –>  N2 (g) +O2 (g) + H2O (g) If you detonate [x] g of ammonium nitrate and try to contain it in a [v] mL container (pipe) at [T] °C, what will the pressure in the container be (in atm)?